Aetna considers bevacizumab (Avastin) medically necessary for the following non-ocular indications:
Bevacizumab is considered experimental and investigational in combination with cetuximab (Erbitux) or panitumumab (Vectibix) because the effectiveness and safety of these combinations has not been established.
Aetna considers bevacizumab experimental and investigational for the treatment of the following non-ocular indications (not an all-inclusive list) as its effectiveness for these indications has not been established.
For bevacizumab for ocular indications, see CPB 0701 - Vascular Endothelial Growth Factor Inhibitors for Ocular Indications.
See also CPB 0371 - Brachytherapy, CPB 0375 - Photodynamic Therapy, CPB 0516 - Colorectal Cancer Screening, CPB 0535 - Virtual Gastrointestinal Endoscopy, CPB 0683 - Oxaliplatin (Eloxatin), and CPB 0684 - Cetuximab (Erbitux).Background
Avastin (bevacizumab) is a recombinant humanized monoclonal IgG1 antibody. Bevacizumab binds to vascular endothelial growth factor (VEGF) and inhibits the interaction of VEGF to Flt1 and KDR receptors on the surface of endothelial cells. In the process, it prevents the proliferation of endothelial cells and formation of new blood vessels .Vascular endothelial growth factor (VEGF) is an important signaling protein involved in angiogenesis (the growth of blood vessels from pre‐existing vasculature). As its name implies, VEGF activity has been mostly studied on cells of the vascular endothelium, although it does have effects on a number of other cell types (e.g. stimulation monocyte/macrophage migration, neurons, cancer cells, kidney epithelial cells).
Avastin (bevacizumab) has been approved by the U.S. Food and Drug Administration (FDA) for: 1) metastatic colorectal cancer In combination with 5‐fluorouracil‐based chemotherapy as first‐line or second‐line therapy, or in combination with fluoropyrimidine‐irinotecan‐ or fluoropyrimidineoxaliplatin‐based chemotherapy as second‐line therapy in patients who have progressed on a first‐line bevacizumab‐containing regimen; 2) non‐squamous non‐small cell lung cancer, with carboplatin and paclitaxel for first line treatment of unresectable, locally advanced, recurrent or metastatic disease; 3) glioblastoma, as a single agent for patients with progressive disease following prior therapy (Effectiveness based on improvement in objective response rate. No data available demonstrating improvement in disease‐related symptoms or survival with bevacizumab); 4) metastatic renal cell carcinoma, in combination with interferon alfa; 5) cervical cancer, in combination with paclitaxel and cisplatin or paclitaxel and topotecan in persistent, recurrent, or metastatic disease; and 6) platinum‐resistant recurrent epithelial ovarian cancer, fallopian tube or primary peritoneal cancer, in combination with paclitaxel, pegylated liposomal doxorubicin or topotecan.
Black Box Warnings:
Wound Healing Complications: Bevacizumab administration can result in the development of wound dehiscence, in some instances resulting in fatality. Bevacizumab therapy should be permanently discontinued in patients with wound dehiscence requiring medical intervention. The appropriate interval between termination of bevacizumab and subsequent elective surgery required to avoid the risks of impaired wound healing/wound dehiscence has not been determined. Bevacizumab should be discontinued at least 28 days prior to elective surgery.
Hemorrhage: Fatal pulmonary hemorrhage can occur in patients with NSCLC treated with chemotherapy and bevacizumab. The incidence of severe or fatal hemoptysis was 31% in patients with squamous histology and 4% in patients with NSCLC excluding predominant squamous histology. Patients with recent hemoptysis (1/2 teaspoonful or more of red blood) should not receive bevacizumab.
Avastin (bevacizumab) should not be used in persons with any of the following:
Bevacizumab should not be used in members experiencing:
Bevacizumab should not be used for at least 28 days following major surgery or until surgical incision is fully healed.
Risk versus benefit must be discussed with patients that are pregnant or breast feeding.
The National Comprehensive Cancer Network Drug and Biologics Compendium (NCCN, 2016) recommends bevacizumab for the following indications:
Colorectal cancer is the second-leading cause of cancer death in the United States. It is the nation's third most common cancer accounting for approximately 15 % of all new cancer cases. Metastatic disease is present at diagnosis in 30 % of the patients, and about 50 % of early-stage patients will eventually present with metastatic disease. For many years, standard treatment of colorectal cancer was 5-fluorouracil (5-FU)-based therapy. Recent availability of newer agents, including capecitabine, irinotecan, oxaliplatin, and cetuximab has significantly expanded the options available for the management of patients with advanced colorectal cancer, with consequent improvements in survival.
Bevacizumab is a recombinant humanized monoclonal antibody to vascular endothelial growth factor (VEGF). It is designed to bind to and inhibit VEGF, which plays an important role in tumor angiogenesis, a process critical for tumor growth and metastasis. On February 26, 2004, the U.S. Food and Drug Administration (FDA) approved bevacizumab (Avastin) (Genentech, Inc., South San Francisco, CA) for use in combination with intravenous 5-FU based chemotherapy as a first-line treatment for patients with metastatic colorectal cancer. It is the first FDA-approved therapy designed to inhibit angiogenesis. In clinical trials, bevacizumab has been shown to extend patients' lives by approximately 5 months when given intravenously as a combination treatment along with standard chemotherapy drugs for colon cancer (e.g., the "Saltz regimen", also known as IFL, which includes irinotecan, 5-FU and leucovorin).
Bevacizumab is administered intravenously. In clinical trials, the most common side effects associated with the use of bevacizumab were asthenia, pain, abdominal pain, headache, hypertension, diarrhea, nausea, vomiting, anorexia, stomatitis, constipation, upper respiratory infection, epistaxis, dyspnea, exfoliative dermatitis, and proteinuria. The most serious adverse events were gastrointestinal perforations/wound healing complications, hemorrhage, hypertensive crises, nephrotic syndrome, and congestive heart failure.
In a phase II clinical study (n = 104), Kabbinavar and colleagues (2003) examined the safety and effectiveness of two doses of bevacizumab, in combination with 5-FU)/leucovorin (LV) versus 5-FU/LV alone in patients with metastatic colorectal cancer. Previously untreated patients with measurable metastatic colorectal cancer were randomly assigned to one of the following three treatment groups: (i) 5-FU (500 mg/m2)/LV (500 mg/m2) alone (n = 36), (ii) 5-FU/LV plus low-dose bevacizumab (5 mg/kg every 2 weeks) (n = 35), and (iii) 5-FU/LV plus high-dose bevacizumab (10 mg/kg every 2 weeks) (n = 33). 5-FU/LV was given weekly for the first 6 weeks of each 8-week cycle. Compared with the 5-FU/LV control arm, treatment with bevacizumab (at both dosages) plus 5-FU/LV resulted in higher response rates (control arm, 17 %, 95 % confidence interval [CI]: 7 to 34 %; low-dose arm, 40 %, 95 % CI: 24 to 58 %; high-dose arm, 24 %, 95 % CI: 12 to 43 %), longer median time to disease progression (control arm, 5.2 months, 95 % CI: 3.5 to 5.6 months; low-dose arm, 9.0 months, 95 % CI: 5.8 to 10.9 months; high-dose arm, 7.2 months, 95 % CI: 3.8 to 9.2 months), and longer median survival (control arm, 13.8 months; 95 % CI: 9.1 to 23.0 months; low-dose arm, 21.5 months, 95 % CI: 17.3 to undetermined; high-dose arm, 16.1 months; 95 % CI: 11.0 to 20.7 months). After cross-over, 2 of 22 patients had a partial response to bevacizumab alone. The authors concluded that the encouraging results of this randomized trial support further study of bevacizumab 5 mg/kg plus chemotherapy as first-line therapy for metastatic colorectal cancer.
The FDA approval of bevacizumab is based on the findings of a large, randomized, double-blind, placebo-controlled study (more than 800 patients) showing prolongation in the median survival of patients treated with bevacizumab plus the IFL chemotherapy regimen by about 5 months, compared to patients treated with the IFL chemotherapy regimen alone (20.3 months versus 15.6 months). The overall response rate to the treatment was 45 % compared to 35 % for the control arm of the trial.
A recent randomized controlled clinical study has shown that the addition of bevacizumab to a standard chemotherapy regimen for colorectal cancer has not resulted in an improvement in disease-free survival. Wolmark et al (2009) reported on the results of a 2-arm randomized prospective study to determine whether infusional 5-FU, leucovorin, and oxaliplatin (mFOLFOX6) plus bevacizumab (mFF6+B) would prolong disease-free survival (DFS) compared to mFOLFOX6 (mFF6) alone. Between September 2004 and October 2006, 2,672 patients with follow-up (1,338 and 1,334 in respective arms) with stage II (24.9 %) or III carcinoma of the colon were randomized to receive either mFF6 or mFF6+B. The primary end point was DFS. Events were defined as first recurrence, second primary cancer, or death. The median follow-up for patients still alive was 36 months. The hazard ratio (HR: FF6+B versus. mFF6) was 0.89; 95 % CI: 0.76 to 1.04; p = 0.15. The investigators reported that data censored at intervals disclosed an initial benefit for bevacizumab that diminished over time: The smoothed estimate of the DFS HR over time indicated that bevacizumab significantly reduced the risk of a DFS event during the interval from 0.5 to 1.0 year. There was no evidence that patients receiving bevacizumab had a worse DFS compared to those receiving mFF6 alone following treatment. The addition of bevacizumab to mFF6 did not result in an overall statistically significant prolongation in DFS. There was a transient benefit in DFS during the 1-year interval that bevacizumab was utilized. Consideration may be given to clinical trials assessing longer duration of bevacizumab administration.
Fluoropyrimidine-based chemotherapy plus the anti-VEGF antibody bevacizumab is standard first-line treatment for metastatic colorectal cancer. Tol and colleagues (2009)studied the effect of adding the anti-epidermal growth factor receptor (EGFR) antibody cetuximab to a combination of capecitabine, oxaliplatin, and bevacizumab for metastatic colorectal cancer. These investigators randomly assigned 755 patients with previously untreated metastatic colorectal cancer to capecitabine, oxaliplatin, and bevacizumab (CB regimen, 378 patients) or the same regimen plus weekly cetuximab (CBC regimen, 377 patients). The primary endpoint was progression-free survival (PFS). The mutation status of the KRAS gene was evaluated as a predictor of outcome. The median PFS was 10.7 months in the CB group and 9.4 in the CBC group (p = 0.01). Quality-of-life scores were lower in the CBC group. The overall survival (OS) and response rates did not differ significantly in the 2 groups. Treated patients in the CBC group had more grade 3 or 4 adverse events, which were attributed to cetuximab-related adverse cutaneous effects. Patients treated with cetuximab who had tumors bearing a mutated KRAS gene had significantly decreased PFS as compared with cetuximab-treated patients with wild-type-KRAS tumors or patients with mutated-KRAS tumors in the CB group. The authors concluded that the addition of cetuximab to capecitabine, oxaliplatin, and bevacizumab resulted in significantly shorter PFS and inferior quality of life. Mutation status of the KRAS gene was a predictor of outcome in the cetuximab group.
In an accompanying editorial of the afore-mentioned article, Mayer (2009) stated that the findings of Tol et al (2009) serve as a reminder that anti-tumor activity observed in pre-clinical and also uncontrolled clinical contexts may not be validated when examined in randomized trials. Furthermore, the data suggest that combining multiple forms of targeted therapies may not be analogous to combining different types of cytotoxic chemotherapy, presumably because of subtle interactions in intra-cellular signaling. Finally, these results underscore the fundamental importance of subjecting hypotheses to carefully conducted clinical trials. As was observed in this situation, more is not always better.
The addition of bevacizumab to oxaliplatin or irinotecan based doublet chemotherapy has shown benefit in metastatic colorectal cancer. Capecitabine (Cap) with or without mitomicin C (MMC) are alternate chemotherapy regimens suitable for patients who are either unfit for or who do not require initial oxaliplatin/irinotecan. Tebbutt et al (2009) reported on a phase III study comparing Cap with Cap Bev and Cap Bev MMC. The aim of this study was to develop a low toxicity regimen suitable for a broad population of patients with metastatic colorectal cancer. Previously untreated patients with unresectable metastatic colorectal cancer considered suitable for Cap monotherapy were randomised to arm A (Cap), arm B (Cap Bev) or arm C (Cap Bev MMC). The primary endpoint was progression free survival (PFS); secondary endpoints were response rate (RR), toxicity, overall survival (OS), and quality of life (QoL). Randomization was stratified by age, performance status (PS), center and Cap dose. Response was assessed every 6 weeks. A total of 471 patients were randomized from July 2005 to June 2007. The most common grade 3/4 toxicities were dermatologic (palmar-plantar erythrodysesthesia, PPE) (16 %, 26 %, 28 %) and diarrhea (11 %, 17 %, 16 %) for arms (A, B, C). However, adjusted rates per cycle were similar as arms B and C received more cycles of Cap (A = 8.3, B = 10.8, and C = 10.5). Other toxicity rates were generally less than 10 %. The study achieved its primary endpoint with a highly significant improvement in PFS for arms B and C. However, OS was similar in all arms. The authors concluded that all treatment regimens were well-tolerated. The addition of Bev +/- MMC to Cap significantly improved PFS without significant additional toxicity. However, OS was similar for all arms.
There is a lack of evidence to support the combinational use of bevacizumab with cetuximab for metastatic colorectal cancer (Tol et al, 2009; Mayer, 2009). Current guidelines from the National Comprehensive Cancer Network (2009) recommends or lists as an option the addition of bevacizumab or cetuximab, but not both, to some regimens for metastatic colorectal cancer, based upon available data.
Non-small cell lung cancer
Preliminary results from a National Cancer Institute (NCI)-sponsored phase III randomized, controlled, multi-center clinical study of bevacizumab in patients with newly diagnosed non-small cell lung cancer (NSCLC) found that subjects treated with chemotherapy plus bevacizumab survived an average of 12.5 months, compared with 10.2 months among patients receiving paclitaxel and carboplatin alone (NCI, 2005). This difference was statistically significant. The data monitoring committee overseeing the trial recommended that the results of a recent interim analysis be made public because the study had met its primary endpoint of improving overall survival. A total of 878 patients with advanced non-squamous, NSCLC who had not previously received systemic chemotherapy were enrolled in this study between July 2001 and April 2004. Patients were randomized to 1 of the 2 treatment arms. One patient group received standard treatment -- 6 cycles of paclitaxel and carboplatin. The second group received the same 6-cycle chemotherapy regimen with the addition of bevacizumab, followed by bevacizumab alone until disease progression. Patients with squamous cell carcinoma of the lung were excluded from in the study because previous clinical experience suggested that these patients had a higher risk of serious bleeding from the lung after bevacizumab therapy. Patients with a prior history of frank hemoptysis were also excluded from the trial. The most significant adverse event observed in this study was life-threatening or fatal bleeding, primarily from the lungs. This infrequent adverse event was more common in the patient group that received bevacizumab in combination with chemotherapy than in the patient group that received only chemotherapy. In October 2006, the FDA approved the use of bevacizumab in combination with carboplatin and paclitaxel for the initial systemic treatment of patients with unresectable, locally advanced, recurrent or metastatic, non-squamous, NSCLC. This approval was based on an improvement in survival time when bevacizumab was added to a standard chemotherapy regimen.
A randomized phase III study (BeTa Lung) evaluating bevacizumab in combination with erlotinib (Tarceva) in patients with advanced NSCLC whose disease had progressed following platinum-based chemotherapy did not meet its primary endpoint of improving OS compared to erlotinib in combination with placebo (Genentech, 2008). This multi-center, randomized, controlled phase III study enrolled 636 patients with advanced NSCLC who experienced disease progression during or following first-line standard chemotherapy or chemoradiotherapy. Patients who had received previous treatment with an epidermal growth factor receptor (EGFR) inhibitor or anti-angiogenesis agent were not eligible for this trial. Patients were randomized to receive erlotinib in combination with bevacizumab or erlotinib in combination with placebo. The primary endpoint of the study was improvement in OS. Secondary endpoints included PFS, objective response and an evaluation of exploratory biomarkers. Median survival was reported to be similar in both arms of this study. However, the study found improvements in the secondary endpoints of PFS and response rate when bevacizumab was added to erlotinib compared to erlotinib alone in this study.
Renal cell carcinoma
A randomized, double-blind, phase II trial was conducted comparing placebo with bevacizumab at doses of 3 and 10 mg per kilogram of body weight, given every 2 weeks in 166 patients with renal cancer (Yang et al, 2003). Subjects were randomized to 3 groups: (i) 40 to placebo, (ii) 37 to low-dose bevacizumab, and (iii) 39 to high-dose bevacizumab. The investigators reported that there was a significant prolongation of the time to progression of disease in the high-dose-antibody group as compared with the placebo group (HR, 2.55; p < 0.001). There was a small difference, of borderline significance, between the time to progression of disease in the low-dose-antibody group and that in the placebo group (HR, 1.26; p = 0.053). The probability of being progression-free for patients given high-dose antibody, low-dose-antibody, and placebo was 64 %, 39 %, and 20 %, respectively, at 4 months and 30 %, 14 %, and 5 % at 8 months. There was, however, no significant differences in OS between groups (p > 0.20 for all comparisons). Although there were no significant differences in survival, this study can not rule out such a benefit due to the fact that the study was too underpowered to detect differences in survival between treatment groups that may be clinically significant (Chen, 2004). A phase III study of bevacizumab in renal cell carcinoma is currently ongoing.
In July 2009, the FDA granted approval for the use of bevacizumab in combination with interferon alfa for the treatment of patients with metastatic renal cell carcinoma.
Preliminary results from a NCI-sponsored multi-center randomized controlled clinical trial conducted by the Eastern Cooperative Oncology Group (ECOG) of 722 women with previously untreated recurrent or metastatic breast cancer show that women who received bevacizumab in combination with paclitaxel had a statistically significant increase in PFS of 4 months than women who received paclitaxel alone. The data monitoring committee overseeing the trial recommended that the results of a recent interim analysis be made public because the study had met its primary endpoint of increasing PFS. Women whose tumors over-expressed HER-2 were not included in the study unless they had previously received trastuzumab (Herceptin) or were unable to receive trastuzumab. Also excluded were women who had received preventive chemotherapy treatment with paclitaxel within the previous 12 months, as well as women with a prior history of thrombosis or who were on anticoagulants. Serious hemorrhage and thrombosis were rare in this study. Women receiving the combination of paclitaxel and bevacizumab had small increases in rates of neuropathy, hypertension and proteinuria than women receiving paclitaxel alone. Other side effects were similar between the 2 treatment groups.
A previous phase III study of bevacizumab in metastatic breast cancer found that the addition of bevacizumab to capecitabine produced a significant increase in response rates, but this did not translate into improved PFS or OS (Miller et al, 2005). This randomized phase III trial compared the efficacy and safety of capecitabine with or without bevacizumab in 462 patients with metastatic breast cancer previously treated with an anthracycline and a taxane. Patients were randomly assigned to receive capecitabine (2,500 mg/m2/d) twice-daily on day 1 through 14 every 3 weeks, alone or in combination with bevacizumab (15 mg/kg) on day 1. Combination therapy significantly increased the response rates (19.8 % versus 9.1 %; p = 0.001); however, this did not result in a longer PFS (4.86 versus 4.17 months; HR= 0.98). Overall survival (15.1 versus 14.5 months) and time to deterioration in quality of life as measured by the Functional Assessment of Cancer Treatment-Breast were comparable in both treatment groups. The investigators reported that bevacizumab was well-tolerated in this heavily pretreated patient population (Miller et al, 2005). No significant differences were found in the incidence of diarrhea, hand-foot syndrome, thromboembolic events, or serious bleeding episodes between treatment groups. Of other grade 3 or 4 adverse events, only hypertension requiring treatment (17.9 % versus 0.5 %) was more frequent in patients receiving bevacizumab.
In July 2010, Federal health scientists said that follow-up studies of Avastin showed that it failed to extend patient lives, opening the door for it to be potentially withdrawal for use in treating that disease. The FDA approved Avastin in 2008 based on a trial showing it slowed growth of tumors caused by breast cancer. The decision was controversial because drugs for cancer patients who have never been treated before must usually show evidence they extend lives. Avastin's so-called "accelerated approval" was based on the condition that later studies would show a survival benefit. But in briefing documents posted online, FDA reviewers said 2 follow-up studies recently submitted by Roche failed to show that Avastin significantly extended lives compared to chemotherapy alone. Additionally, the FDA said that in follow-up studies the drug did not slow tumor growth to the same degree as in earlier studies. Furthermore, patients taking Avastin showed significantly more side effects, including high blood pressure, fatigue and abnormal white blood cell levels.
On July 20, 2010, an advisory panel has voted 12 to 1 to recommend that the FDA remove the advanced breast cancer indication from Avastin. The Oncologic Drugs Advisory Committee voted that bevacizumab, when added to standard chemotherapy, does not extend PFS long enough to be clinically meaningful in patients with human epidermal growth factor receptor 2 (HER2)-negative, metastatic breast cancer. If the FDA follows the advice of its advisory committee -- and it usually does -- bevacizumab would still be indicaetd for the treatment of colon, kidney, and lung cancer. The FDA will make a final decision by September 17 (Walker, 2010).
In a multi-center, randomized, open-label, phase III clinical trial, Martin et al (2015) examined if combining bevacizumab with endocrine therapy (ET) could potentially delay the emergence of resistance to ET in patients with breast cancer. This bi-national (Spain and Germany) study added bevacizumab (15 mg/kg every 3 weeks) to ET (ET-B; letrozole or fulvestrant) as first-line therapy in post-menopausal patients with HER2-negative and hormone receptor-positive advanced breast cancer. These researchers compared PFS, OS, overall response rate (ORR), response duration (RD), time to treatment failure (TTF), clinical benefit rate (CBR), and safety. From 380 patients recruited (2007 to 2011), 374 were analyzed by intent to-treat (184 patients on ET and 190 patients on ET-B). Median age was 65 years, 270 patients (72 %) had ECOG performance status of 0, 178 patients (48 %) had visceral metastases, and 171 patients (46 %) and 195 patients (52 %) had received prior chemotherapy or ET, respectively. Median PFS was 14.4 months in the ET arm and 19.3 months in the ET-B arm (HR, 0.83; 95 % CI: 0.65 to 1.06; p = 0.126); ORR, CBR, and RD with ET versus ET-B were 22 % versus 41 % (p < 0.001), 67 % versus 77 % (p = 0.041), and 13.3 months versus 17.6 months (p = 0.434), respectively; TTF and OS were comparable in both arms. Grade 3 to 4 hypertension, aminotransferase elevation, and proteinuria were significantly higher in the ET-B arm; 8 patients (4.2 %) receiving ET-B died during study or within 30 days of end of treatment. The authors concluded that the addition of bevacizumab to ET in first-line treatment failed to produce a statistically significant increase in PFS or OS in women with HER2-negative/hormone receptor-positive advanced breast cancer. They stated that ET-B should not be recommended in the treatment of advanced hormone receptor-positive/HER2-negative breast cancer.
Epithelial ovarian cancer and primary peritoneal cancer
Guidelines from the National Comprehensive Cancer Network (NCCN, 2006) stated that bevacizumab is an acceptable alternative chemotherapeutic regimen for recurrent epithelial ovarian cancer for stage II, III, and IV patients with partial responses to their primary paclitaxel and platinum-based chemotherapeutic regimens. The guidelines noted that bevacizumab has been demonstrated to be active in recurrent epithelial ovarian cancer, although it may cause arterial thrombosis and intestinal perforation. NCCN guidelines also indicate bevacizumab as therapy for clinical relapse in patients with stage II to IV granulosa-cell tumors of the ovary.
Primary peritoneal carcinoma (also known as papillary serous carcinoma of the peritoneum) is an entity closely associated with, but distinct from, epithelial ovarian carcinoma (EOC). Histologically, this tumor is indistinguishable from papillary serous ovarian carcinoma, but morphologic distinctions have been described. The criteria established by the Gynecologic Oncology Group (GOG) to define primary peritoneal carcinoma are:
Using these criteria, between 7 and 20 % of patients previously identified with primary EOC may be re-classified as having primary peritoneal carcinoma. In some cases, they may be classified as adenocarcinomas of unknown primary site. The pattern of spread is similar to that in women with EOC. Women with papillary serous carcinoma of the peritoneum are treated similarly to those with EOC. Optimal surgical cytoreduction may be more difficult to achieve in the setting of widespread peritoneal disease without a predominant ovarian or pelvic mass. Chemotherapy regimens and response rates are similar to EOC (NCCN, 2009).
Bevacizumab appears to be an effective treatment for gliomas. Vredenburgh et al (2007) reported on a phase II clinical trial of bevacizumab and irinotecan in 32 patients with recurrent gliomas, 23 with grade IV gliomas and 9 with grade III gliomas. Radiographical responses were noted in 63 % of patients (14 of 23 grade IV patients and 6 of 9 grade III patients); 1 was a complete response and 19 were partial responses. The median PFS was 23 weeks for all patients (95 % CI: 15 to 30 weeks; 20 weeks for grade IV patients and 30 weeks for grade III patients). The 6-month PFS probability was 38 % overall, and 56 % in the grade III glioma patients and 30 % in the grade IV glioma patients. The 6-month OS probability was 72 %. The response and survival rates in this study are higher than what would have been expected.
In May 2009, the FDA approved bevacizumab for the treatment of patients with glioblastoma multiforme when this form of brain cancer continues to progress following standard therapy.
Packer et al (2009) noted that chemotherapy has taken on a prominent role in the treatment of pediatric low-grade gliomas not amenable to gross total resections; however, there are few proven effective options for children with multiply recurrent tumors. Bevacizumab and irinotecan have been used with some success in adults with malignant gliomas. A total of 10 children with multiply recurrent low-grade gliomas were treated with the combination of bevacizumab and irinotecan. Patients received treatment at a median of 5.2 years of age, range of 1.5 to 11.1 years. The majority of patients had diencephalic tumors, 3 had neurofibromatosis type 1, and 2 had disseminated disease at the time of treatment. Nine of 10 patients had progressed after 3 or greater chemotherapy regimens and 1 patient also had received radiation therapy. Seven patients had an objective neuro-radiographical response, which was a complete response in 1, partial response in 3, and minor response in 3. Clinical improvements were noted in 7, including improved visual acuity (n = 2), improved motor function (n = 2), weight gain in 4 with a diencephalic syndrome, and reversal of psychomotor retardation (n = 3). Dose-limiting toxicities included transient leukoencephalopathy (n = 1) and grade 3 proteinuria (n = 1). Response was durable in the majority of patients and 6 remained on treatment, for up to 22 months. The authors concluded that multiple recurrent low-grade gliomas in children are responsive to the combination of bevacizumab and irinotecan. The drug combination of bevacizumab and irinotecan has been relatively well-tolerated, including in patients with neurofibromatosis type 1, and warrants further study.
Gonzalez et al (2007) reported the findings of 15 patients with malignant brain tumors who were treated with bevacizumab or bevacizumab in combination with other agents on either a 5 mg/kg/2-week or 7.5 mg/kg/3-week schedule. Radiation necrosis was diagnosed in 8 of these patients on the basis of magnetic resonance imaging (MRI) and biopsy; MRI studies were obtained before treatment and at 6-week to 8-week intervals. Of the 8 patients with radiation necrosis, post-treatment MRI performed an average of 8.1 weeks after the start of bevacizumab therapy showed a reduction in all 8 patients in both the MRI fluid-attenuated inversion-recovery (FLAIR) abnormalities and T1-weighted post-Gd-contrast abnormalities. The average area change in the T1-weighted post-Gd-contrast abnormalities was 48 % (+/- 22 SD), and the average change in the FLAIR images was 60 % (+/- 18 SD). The average reduction in daily dexamethasone requirements was 8.6 mg (+/- 3.6). The authors concluded that bevacizumab, alone and in combination with other agents, can reduce radiation necrosis by decreasing capillary leakage and the associated brain edema. Moreover, they stated that these findings will need to be confirmed in a randomized trial to determine the optimal duration of treatment.
Liu et al (2009) stated that diffuse pontine gliomas are a pediatric brain tumor that is fatal in nearly all patients. Given the poor prognosis for patients with this tumor, their quality of life is very important. Radiation therapy provides some palliation, but can result in radiation necrosis and associated neurologic decline. The typical treatment for this necrosis is steroid therapy. Although steroids are effective, they have many adverse effects that can often significantly compromise quality of life. Bevacizumab has been suggested as a treatment for radiation necrosis. These investigators reported on their initial experience with bevacizumab therapy for radiation necrosis in pediatric pontine gliomas. A total of 4 children with pontine gliomas treated at the Children's Hospital in Denver and the University of Colorado Denver developed evidence of radiation necrosis both clinically and on imaging. They received bevacizumab as a treatment for the radiation necrosis. These researchers reviewed the clinical outcome and imaging findings. After bevacizumab therapy, 3 children had significant clinical improvement and were able to discontinue steroid use. One child continued to decline, and, in retrospect, had disease progression, not radiation necrosis. In all cases, bevacizumab was well-tolerated. The authors concluded that in children with pontine gliomas, bevacizumab may provide both therapeutic benefit and diagnostic information. They stated that more formal evaluation of bevacizumab in these children is needed.
In a randomized, double-blind, placebo-controlled trial, Gilbert et al (2014) treated adults who had centrally confirmed glioblastoma with radiotherapy (60 Gy) and daily temozolomide. Treatment with bevacizumab or placebo began during week 4 of radiotherapy and was continued for up to 12 cycles of maintenance chemotherapy. At disease progression, the assigned treatment was revealed, and bevacizumab therapy could be initiated or continued. The trial was designed to detect a 25 % reduction in the risk of death and a 30 % reduction in the risk of progression or death, the 2 co-primary end-points, with the addition of bevacizumab. A total of 978 patients were registered, and 637 underwent randomization. There was no significant difference in the duration of OS between the bevacizumab group and the placebo group (median of 15.7 and 16.1 months, respectively; HR for death in the bevacizumab group, 1.13). Progression-free survival was longer in the bevacizumab group (10.7 months versus 7.3 months; HR for progression or death, 0.79). There were modest increases in rates of hypertension, thrombo-embolic events, intestinal perforation, and neutropenia in the bevacizumab group. Over time, an increased symptom burden, a worse QOL, and a decline in neurocognitive function were more frequent in the bevacizumab group. The authors concluded that first-line use of bevacizumab did not improve OS in patients with newly diagnosed glioblastoma; PFS was prolonged but did not reach the pre-specified improvement target.
In a phase III clinical trial, Chinot et al (2014) evaluated the effect of the addition of bevacizumab to radiotherapy-temozolomide for the treatment of newly diagnosed glioblastoma. These researchers randomly assigned patients with supratentorial glioblastoma to receive intravenous bevacizumab (10 mg/kg of body weight every 2 weeks) or placebo, plus radiotherapy (2 Gy 5 days a week; maximum of 60 Gy) and oral temozolomide (75 mg/square meter of body-surface area/day) for 6 weeks. After a 28-day treatment break, maintenance bevacizumab (10 mg/kg intravenously every 2 weeks) or placebo, plus temozolomide (150 to 200 mg/square meter/day for 5 days), was continued for six 4-week cycles, followed by bevacizumab monotherapy (15 mg/kg intravenously every 3 weeks) or placebo until the disease progressed or unacceptable toxic effects developed. The co-primary end-points were investigator-assessed PFS and OS. A total of 458 patients were assigned to the bevacizumab group, and 463 patients to the placebo group. The median PFS was longer in the bevacizumab group than in the placebo group (10.6 months versus 6.2 months; stratified HR for progression or death, 0.64; 95 % CI: 0.55 to 0.74; p < 0.001). The benefit with respect to PFS was observed across subgroups. Overall survival did not differ significantly between groups (stratified HR for death, 0.88; 95 % CI: 0.76 to 1.02; p = 0.10). The respective OS rates with bevacizumab and placebo were 72.4 % and 66.3 % at 1 year (p = 0.049) and 33.9 % and 30.1 % at 2 years (p = 0.24). Baseline health-related QOL and performance status were maintained longer in the bevacizumab group, and the glucocorticoid requirement was lower. More patients in the bevacizumab group than in the placebo group had grade 3 or higher adverse events (66.8 % versus 51.3 %) and grade 3 or higher adverse events often associated with bevacizumab (32.5 % versus 15.8 %). The authors concluded that the addition of bevacizumab to radiotherapy-temozolomide did not improve survival in patients with glioblastoma. Improved PFS and maintenance of baseline quality of life and performance status were observed with bevacizumab; however, the rate of adverse events was higher with bevacizumab than with placebo.
The American College of Radiology Expert Panel on Radiation Oncology-Gynecology’s Appropriateness Criteria® on “Advanced cervical cancer” (Gaffney et al, 2012) stated that “The combinations of cisplatin and topotecan have demonstrated an improvement in overall survival, and recently bevacizumab has shown promising activity in recurrent or metastatic cervix cancer”.
Vici and colleagues (2014) noted that cervical cancer is the 3rd most common cancer worldwide, and the development of new diagnosis, prognostic, and treatment strategies is a major interest for public health. Cisplatin, in combination with external beam irradiation for locally advanced disease, or as monotherapy for recurrent/metastatic disease, has been the cornerstone of treatment for more than 2 decades. Other investigated cytotoxic therapies include paclitaxel, ifosfamide and topotecan, as single agents or in combination, revealing unsatisfactory results. In recent years, much effort has been made towards evaluating new drugs and developing innovative therapies to treat cervical cancer. Among the most investigated molecular targets are EGFR and VEGF signaling pathways; both playing a critical role in the development of cervical cancer. Studies with bevacizumab or VEGF receptor tyrosine kinase have given encouraging results in terms of clinical efficacy, without adding significant toxicity.
Goey and Figg (2014) stated that the VEGF-A binding monoclonal antibody bevacizumab is a widely prescribed angiogenesis inhibitor and indicated for many types of cancer. As shown by 3 randomized phase III trials recently published in the New England Journal of Medicine, novel indications for this drug are still being explored. In the RTOG 0825 and AVAglio trials the effect of bevacizumab addition to standard therapy in newly diagnosed glioblastoma (radiotherapy plus temozolomide) was investigated, while in GOG 240 the combination of platinum-based chemotherapy plus bevacizumab was explored in advanced cervical cancer. In RTOG 0825, addition of bevacizumab to standard therapy did not result in survival benefit, and moreover, quality of life was more deteriorated in the bevacizumab arm. In AVAglio, however, PFS was significantly increased in the bevacizumab group and these patients also experienced a longer deterioration-free survival. These conflicting results do not fully support the incorporation of bevacizumab in the first-line treatment of glioblastoma. In contrast, in GOG 240 the bevacizumab group (including paclitaxel plus topotecan or paclitaxel) experienced a significant longer PFS and OS, and quality of life was not negatively affected in these patients. Thus, these results favor the use of bevacizumab in the treatment of advanced cervical cancer.
Tewari and colleagues (2014) evaluated the effectiveness of bevacizumab and non-platinum combination chemotherapy in patients with recurrent, persistent, or metastatic cervical cancer. Using a 2-by-2 factorial design, these researchers randomly assigned 452 patients to chemotherapy with or without bevacizumab at a dose of 15 mg/kg of body weight. Chemotherapy consisted of cisplatin at a dose of 50 mg/m2 of body-surface area, plus paclitaxel at a dose of 135 or 175 mg/m2 or topotecan at a dose of 0.75 mg/m2 on days 1 to 3, plus paclitaxel at a dose of 175 mg/m2 on day 1. Cycles were repeated every 21 days until disease progression, the development of unacceptable toxic effects, or a CR was documented. The primary end-point was OS; a reduction of 30 % in the hazard ratio for death was considered clinically important. Groups were well-balanced with respect to age, histologic findings, performance status, previous use or non-use of a radio-sensitizing platinum agent, and disease status. Topotecan-paclitaxel was not superior to cisplatin-paclitaxel (HR for death, 1.20). With the data for the 2 chemotherapy regimens combined, the addition of bevacizumab to chemotherapy was associated with increased OS (17.0 months versus 13.3 months; HR for death, 0.71; 98 % CI: 0.54 to 0.95; p = 0.004 in a 1-sided test) and higher response rates (48 % versus 36 %, p = 0.008). Bevacizumab, as compared with chemotherapy alone, was associated with an increased incidence of hypertension of grade 2 or higher (25 % versus 2 %), thrombo-embolic events of grade 3 or higher (8 % versus 1 %), and gastro-intestinal fistulas of grade 3 or higher (3 % versus 0 %). The authors concluded that the addition of bevacizumab to combination chemotherapy in patients with recurrent, persistent, or metastatic cervical cancer was associated with an improvement of 3.7 months in median OS.
On August 14, 2014, the FDA approved Avastin (bevacizumab) to treat patients with persistent, recurrent or late-stage (metastatic) cervical cancer. The FDA reviewed Avastin for treatment of patients with cervical cancer under its priority review program because the drug demonstrated the potential to be a significant improvement in safety or effectiveness over available therapy in the treatment of a serious condition. Priority review provides an expedited review of a drug’s application. The safety and effectiveness of bevacizumab for treatment of patients with cervical cancer was evaluated in a clinical study involving 452 patients with persistent, recurrent, or late-stage disease. Subjects were randomly assigned to receive paclitaxel and cisplatin with or without Avastin or paclitaxel and topotecan with or without Avastin. Results showed an increase in OS to 16.8 months in participants who received chemotherapy in combination with Avastin as compared to 12.9 months for those receiving chemotherapy alone.
Furthermore, NCCN’s clinical practice guideline on “Cervical cancer” (Version 1.2015) lists cisplatin/paclitaxel/bevacizumab (category 1) and topotecan/paclitaxel/bevacizumab (category 2B) as 1st-line combinational therapy; as well as bevacizumab (category 2B) as 2nd-line single-agent therapy.
Guidelines from the NCCN (2010) indicated bevacizumab as a single agent for disease progression after radiation therapy for spine or brain ependymoma recurrence.
Bevacizumab is being investigated as a treatment for pancreatic cancer. An assessment by the BlueCross BlueShield Technology Evaluation Center (TEC) (BCBSA, 2006) concluded that bevacizumab for pancreatic cancer does not meet the TEC criteria. Regarding use of bevacizumab as first-line therapy, TEC assessment notes "On June 26, 2006, the drug's manufacturer announced that, after interim analysis of a phase III randomized controlled trial (RCT; n = 602) comparing gemcitabine with versus without bevacizumab as first-line therapy for pancreatic cancer, the trial's data safety monitoring board concluded that it was .... very unlikely that significant differences in overall survival will be shown as the data mature. Consequently, the trial was stopped early." Regarding use of bevacizumab as second line therapy, the TEC assessment identified 2 published uncontrolled studies on pancreatic cancer. One study on pancreatic cancer also included radiation therapy. Each study used bevacizumab as part of a combination regimen, but none provided data for comparison on concurrent or historical controls managed with the same regimen minus bevacizumab. The TEC assessment concluded that current evidence does not permit conclusions on outcomes of bevacizumab for any stage of pancreatic carcinoma.
In September 2009, the TEC assessment (BCBSA, 2009) on the off-label use of bevacizumab for advanced adenocarcinoma of the pancreas concluded that whether the addition of bevacizumab to chemotherapy regimens for advanced pancreatic adenocarcinoma improves health outcomes has not been established in the investigational settings. Thus, the use of bevacizumab for patients with advanced adenocarcinoma of the pancreas does not meet the TEC criteria.
In a phase III study, Van Cutsem et al (2009) examined the use of bevacizumab in combination with gemcitabine and erlotinib in patients with metastatic pancreatic cancer. Patients were randomly assigned to receive gemcitabine (1,000 mg/m(2)/week), erlotinib (100 mg/day), and bevacizumab (5 mg/kg every 2 weeks) or gemcitabine, erlotinib, and placebo. Primary end point was OS; secondary end points included PFS, disease control rate, and safety. A total of 301 patients were randomly assigned to the placebo group and 306 to the bevacizumab group. Median OS was 7.1 and 6.0 months in the bevacizumab and placebo arms, respectively (HR, 0.89; 95 % CI: 0.74 to 1.07; p = 0.2087); this difference was not statistically significant. Adding bevacizumab to gemcitabine-erlotinib significantly improved PFS (HR, 0.73; 95 % CI: 0.61 to 0.86; p = 0.0002). Treatment with bevacizumab plus gemcitabine-erlotinib was well-tolerated: safety data did not differ from previously described safety profiles for individual drugs. The authors concluded that the primary objective was not met. The addition of bevacizumab to gemcitabine-erlotinib did not lead to a statistically significant improvement in OS in patients with metastatic pancreatic cancer. However, PFS was significantly longer in the bevacizumab group compared with placebo.
In a phase II clinical trial, Crane et al (2009) evaluated the 1-year survival of patients with locally advanced, unresectable pancreatic cancer treated with the combination of bevacizumab, capecitabine, and radiation. Secondary end points were toxicity, PFS, and RR. Patients with locally advanced pancreatic cancer without duodenal invasion were treated with 50.4 Gy per 28 fractions to the gross tumor with concurrent capecitabine 825 mg/m(2) orally twice-daily on days of radiation and bevacizumab 5 mg/kg on days 1, 15, and 29 followed by maintenance gemcitabine 1 g/m(2) weekly for 3 weeks and bevacizumab 5 mg/kg every 2 weeks, both in 4-week cycles until progression. Treatment plans were reviewed for quality assurance (QA). Between January 2005 and February 2006, 82 eligible patients were treated. The median and 1-year survival rates were 11.9 months (95 % CI: 9.9 to 14.0 months) and 47 % (95 % CI: 36 % to 57 %). Median PFS was 8.6 months (95 % CI: 6.9 to 10.5), and RR was 26 %. Overall, 35.4 % of patients had grade 3 or greater treatment-related gastro-intestinal toxicity (22.0 % during chemoradiotherapy, 13.4 % during maintenance chemotherapy). Unacceptable radiotherapy protocol deviations (i.e., inappropriately generous volume contoured) correlated with grade 3 or greater gastrointestinal toxicity during chemoradiotherapy (45 % versus 18 %; adjusted odds ratio, 3.7; 95 % CI: 0.98 to 14.1; p = 0.05). The authors concluded that the addition of bevacizumab to a regimen of capecitabine-based chemoradiotherapy followed by gemcitabine did not result in an improvement in overall survival in patients with locally advanced pancreatic cancer.
Shad et al (2006) assessed the safety and effectiveness of the addition of bevacizumab to chemotherapy in the treatment of gastric and gastro-esophageal junction (GEJ) adenocarcinoma. A total of 47 patients with metastatic or unresectable gastric/GEJ adenocarcinoma were treated with bevacizumab 15 mg/kg on day 1, irinotecan 65 mg/m2, and cisplatin 30 mg/m2 on days 1 and 8, every 21 days. The primary end point was to demonstrate a 50 % improvement in time to progression over historical values. Secondary end points included safety, response, and survival. Patient characteristics were as follows: median age 59 years (range of 25 to 75 years); Karnofsky performance status 90 % (70 to 100 %); male:female, 34:13; and gastric/GEJ, 24:23. With a median follow-up of 12.2 months, median time to progression was 8.3 months (95 % CI: 5.5 to 9.9 months). In 34 patients with measurable disease, the overall response rate was 65 % (95 % CI: 46 to 80 %). Median survival was 12.3 months (95 % CI: 11.3 to 17.2 months). These researchers observed no increase in chemotherapy related toxicity. Possible bevacizumab-related toxicity included a 28 % incidence of grade 3 hypertension, 2 patients with a gastric perforation and 1 patient with a near perforation (6 %), and 1 patient with a myocardial infarction (2 %). Grade 3 to 4 thromboembolic events occurred in 25 % of patients. Although the primary tumor was unresected in 40 patients, these investigators observed only 1 patient with a significant upper gastrointestinal bleed. The authors concluded that bevacizumab can be safely given with chemotherapy even with primary gastric and GEJ tumors in place. The response rate, time to disease progression (TTP), and OS are encouraging, with TTP improved over historical controls by 75 %. Moreover, they stated that further development of bevacizumab in gastric and GEJ cancers is needed.
Abad (2008) noted that bevacizumab has been used to treat patients with gastric cancer in phase I and II clinical trials with good results, which need to be confirmed in new phase III studies. Also, Ohtsu (2008) stated that several targeting agents such as trastuzumab, bevacizumab, and lapatinib are now under investigation in international randomized studies to examine their effects on metastatic gastric cancer.
Cancer of unknown primary
In a phase II clinical study, Hainsworth et al (2009) evaluated the efficacy and toxicity of the combination of paclitaxel, carboplatin, bevacizumab, and erlotinib in the first-line treatment of patients with carcinoma of unknown primary site (CUP). Patients with previously untreated CUP (adenocarcinoma, poorly differentiated carcinoma, poorly differentiated squamous carcinoma) without clinical or pathological characteristics of a well-defined treatable subset were eligible. All patients received paclitaxel, carboplatin, bevacizumab, and erlotinib. Treatment cycles were repeated at 21-day intervals. After 4 cycles, paclitaxel and carboplatin were discontinued; bevacizumab-erlotinib treatment was continued until tumor progression. Patients were initially evaluated for response after completion of 2 treatment cycles; re-evaluations occurred every 6 weeks thereafter. Overall, 49 of 60 patients (82 %) completed 4 cycles of therapy, and 44 patients (73 %) subsequently received maintenance bevacizumab and erlotinib. Thirty-two patients (53 %) had major responses to treatment; an additional 18 patients had stable disease. After a median follow-up of 19 months, the median PFS time was 8 months, with 38 % of patients progression free at 1 year. The median survival time and 2-year OS rate were 12.6 months and 27 %, respectively. Treatment was generally well-tolerated, with a toxicity profile as predicted based on the known toxicities of each treatment component. The authors concluded that empiric treatment with paclitaxel, carboplatin, bevacizumab, and erlotinib is effective and well-tolerated as first-line treatment for patients with CUP. They stated that further development of this regimen is warranted.
Kamat and colleagues (2007) examined the clinical and therapeutic significance of VEGF in endometrial carcinoma using patient samples and an endometrioid orthotopic mouse model. Following Institutional Review Board approval, VEGF expression and microvessel density (MVD) counts were evaluated using immunohistochemistry in 111 invasive endometrial cancers by 2 independent investigators. Results were correlated with clinicopathologic characteristics. For the animal model, Ishikawa or Hec-1A cancer cell lines were injected directly into the uterine horn. Therapy experiments with bevacizumab alone or in combination with docetaxel were done and samples were analyzed for markers of angiogenesis and proliferation. Of 111 endometrial cancers, high expression of VEGF was seen in 56 % of tumors. There was a strong correlation between VEGF expression and MVD (p < 0.001). On multi-variate analysis, stage (p = 0.04), grade (p = 0.003), VEGF levels (p = 0.03), and MVD (p = 0.037) were independent predictors of shorter disease-specific survival. In the murine model, whereas docetaxel and bevacizumab alone resulted in 61 % to 77 % tumor growth inhibition over controls, combination therapy had the greatest efficacy (85 % to 97 % inhibition over controls; p < 0.01) in both models. In treated tumors, combination therapy significantly reduced MVD counts (50 % to 70 % reduction over controls; p < 0.01) and percent proliferation (39 % reduction over controls; p < 0.001). The authors concluded that increased levels of VEGF and angiogenic markers are associated with poor outcome in endometrioid endometrial cancer patients. Using a novel orthotopic model of endometrioid endometrial cancer, these researchers showed that combination of anti-vascular therapy with docetaxel is highly efficacious and should be considered for future clinical trials.
In a phase II clinical trial, Siegel et al (2008) determined the clinical and biologic effects of bevacizumab in unresectable hepatocellular carcinoma (HCC). Adults with organ-confined HCC, ECOG performance status of 0 to 2, and compensated liver disease were eligible. Patients received bevacizumab 5 mg/kg (n = 12) or 10 mg/kg (n = 34) every 2 weeks until disease progression or treatment-limiting toxicity. The primary objective was to determine whether bevacizumab improved the 6-month PFS rate from 40 % to 60 %. Secondary end points included determining the effects of bevacizumab on arterial enhancement and on plasma cytokine levels and the capacity of patients' plasma to support angiogenesis via an in vitro assay. The study included 46 patients, of whom 6 had objective responses (13 %; 95 % CI: 3 % to 23 %), and 65 % were progression-free at 6 months. Median PFS time was 6.9 months (95 % CI: 6.5 to 9.1 months); OS rate was 53 % at 1 year, 28 % at 2 years, and 23 % at 3 years. Grade 3 to 4 adverse events included hypertension (15 %) and thrombosis (6 %, including 4 % with arterial thrombosis). Grade 3 or higher hemorrhage occurred in 11 % of patients, including 1 fatal variceal bleed. Bevacizumab was associated with significant reductions in tumor enhancement by dynamic contrast-enhanced magnetic resonance imaging and reductions in circulating VEGF-A and stromal-derived factor-1 levels. Functional angiogenic activity was associated with VEGF-A levels in patient plasma. The authors concluded that these findings revealed significant clinical and biologic activity for bevacizumab in non-metastatic HCC and achieved the primary study end point. Serious bleeding complications occurred in 11 % of patients. They stated that further evaluation is needed in carefully selected patients (e.g., unresectable HCC).
In another phase II study, Thomas et al (2009) determined the proportion of patients with HCC treated with the combination of bevacizumab (B) and erlotinib (E) who were alive and progression free at 16 weeks (16-week PFS [PFS16]) of continuous therapy. Secondary objectives included response rate, median PFS, survival, and toxicity. Patients who had advanced HCC that was not amenable to surgical or regional therapies, up to 1 prior systemic treatment; Childs-Pugh score A or B liver function; ECOG performance status 0, 1, or 2 received B 10 mg/kg every 14 days and E 150 mg orally daily, continuously, for 28-day cycles. Tumor response was evaluated every 2 cycles by using Response Evaluation Criteria in Solid Tumors Group criteria. A total of 40 patients were treated. The primary end point of PFS16 was 62.5 %; 10 patients achieved a partial response for a confirmed overall response rate (intent-to-treat) of 25 %. The median PFS event was 39 weeks (95 % CI: 26 to 45 weeks; 9.0 months), and the median OS was 68 weeks (95 % CI: 48 to 78 weeks; 15.65 months). Grades 3 to 4 drug-related toxicity included fatigue (n = 8; 20 %), hypertension (n = 6; 15 %), diarrhea (n = 4; 10 %) elevated transaminases (n = 4; 10 %), gastrointestinal hemorrhage (n = 5; 12.5 %), wound infection (n = 2; 5 %), thrombocytopenia (n = 1; 2.5 %), and proteinuria, hyper-bilirubinemia, back pain, hyperkalemia, and anorexia (n = 1 each). The authors concluded that the combination of B + E in patients who had advanced HCC showed significant, clinically meaningful antitumor activity. They stated that bevacizumab plus erlotinib warrant additional evaluation in randomized controlled trials.
Plotkin and co-workers 2009) determined the expression pattern of VEGF and 3 of its receptors, VEGFR-2, neuropilin-1, and neuropilin-2, in paraffin-embedded samples from 21 vestibular schwannomas associated with neurofibromatosis type 2 and from 22 sporadic schwannomas. A total of 10 consecutive patients with neurofibromatosis type 2 and progressive vestibular schwannomas who were not candidates for standard treatment were treated with bevacizumab. An imaging response was defined as a decrease of at least 20 % in tumor volume, as compared with baseline. A hearing response was defined as a significant increase in the word-recognition score, as compared with baseline. Vascular endothelial growth factor was expressed in 100 % of vestibular schwannomas and VEGFR-2 in 32 % of tumor vessels on immuno-histochemical analysis. Before treatment, the median annual volumetric growth rate for 10 index tumors was 62 %. After bevacizumab treatment in the 10 patients, tumors shrank in 9 patients, and 6 patients had an imaging response, which was maintained in 4 patients during 11 to 16 months of follow-up. The median best response to treatment was a volumetric reduction of 26 %. Three patients were not eligible for a hearing response; of the remaining 7 patients, 4 had a hearing response, 2 had stable hearing, and 1 had progressive hearing loss. There were 21 adverse events of grade 1 or 2. The authors concluded that VEGF blockade with bevacizumab improved hearing in some, but not all, patients with neurofibromatosis type 2 and was associated with a reduction in the volume of most growing vestibular schwannomas. They stated that additional research is needed to determine the optimal drug regimen, duration, and adverse-effect profile for long-term anti-VEGF therapy for vestibular schwannomas associated with neurofibromatosis.
Wortmann et al (2010) evaluated the effects of bevacizumab plus capecitabine as salvage therapy in advanced adrenocortical carcinoma (ACC). Patients registered with the German ACC Registry with refractory ACC progressing after cytotoxic therapies were offered treatment with bevacizumab (5 mg/kg body weight i.v. every 21 days) and oral capecitabine (950 mg/m(2) twice-daily for 14 days followed by 7 days of rest) in 2006 to 2008. Evaluation of tumor response was performed by imaging according to response evaluation criteria in solid tumours every 12 weeks. A total of 10 patients were treated with bevacizumab plus capecitabine. None of them experienced any objective response or stable disease. Two patients had to stop therapy after few weeks due to hand-foot syndrome, and 3 patients died on progressive disease within 12 weeks. Other adverse events were mild (grade I to grade II). Median survival after treatment initiation was 124 days. The authors concluded that bevacizumab plus capecitabine has no activity in patients with very advanced ACC. Hence, this regimen can not be recommended as a salvage therapy.
In a retrospective review, Maturo and Hartnick (2010) described their initial experience with intra-lesional bevacizumab treatment for children with severe, recurrent respiratory papilloma (RRP). A total of 3 children, aged 3 to 6 years, with severe RRP requiring more than 4 operative interventions in 1 year whose parents (or legal guardians) consented to adjuvant treatment with intra-lesional bevacizumab. All 3 children were treated as follows: surgical debridement with a micro-debrider, pulsed KTP laser treatments, and adjuvant intra-lesional injections with bevacizumab (1.25 mg total). Main outcome measures were time interval between operative interventions, Derkay severity scale for RRP, and pediatric voice-related quality of life (PVRQOL) scores. All 3 children demonstrated increased time between operative interventions. Two children had a substantial decrease in their Derkay score and improved PVRQOL scores. One child, although time between operative interventions improved, did not have any change in Derkay score and required further adjuvant therapy. The authors concluded that injectable bevacizumab appears to show some efficacy in prolonging the time between treatments and therefore reducing the number of treatments per year in children with severe RRP. However, before any meaningful conclusions can be drawn, further studies must be conducted in the form of head-to-head trials looking specifically at the issues of time between treatment intervals, efficacy of one adjunct over another, vocal outcomes, and whether several adjunctive treatments confer advantage over 1 treatment.
In a pilot study, Guenterberg and associates (2011) hypothesized that administration of bevacizumab in combination with high-dose interferon-alpha2b (IFN-α2b) would have clinical activity in patients with metastatic ocular melanoma. Patients with metastatic ocular melanoma received bevacizumab (15 mg/kg intravenously every 2 weeks) plus IFN-α2b (5 MU/m subcutaneously 3 times weekly for 2 weeks followed by a dose of 10 MU/m subcutaneously thereafter). Patients exhibiting a clinical response or stabilization of disease were treated until disease progression. A total of 5 patients were treated (3 men and 2 women) with a mean age of 63.8 years (range of 53 to 71 years). Overall, the regimen was well-tolerated. The following adverse events were noted: grade 3 dyspnea (n = 2), grade 3 and 4 fatigue (n = 2), grade 3 muscle weakness (n = 1), grade 3 anorexia (n = 1), grade 1 and 2 proteinuria (n = 2), and grade 3 diarrhea (n = 1). All adverse events resolved with a treatment holiday or dose reduction. One patient had reduction in tumor burden of 23 % by Response Evaluation Criteria in Solid Tumors criteria and 2 patients had stabilization of disease lasting 28 and 36 weeks, respectively. Two patients failed to respond and progressed after 6 and 7 weeks of therapy. The authors concluded that bevacizumab and IFN-α2b were well-tolerated in this patient population, and clinical activity was observed. They stated that further study of high-dose IFN-α2b in combination with bevacizumab in this setting is warranted.
Gonzalez-Cao et al (2008) assessed the activity of the combination of weekly paclitaxel and bevacizumab in previously treated metastatic melanoma. Patients with previously treated metastatic melanoma received paclitaxel 70 mg/m(2) weekly and bevacizumab 10 mg/kg biweekly for 5 consecutive weeks every 6 weeks. A total of 12 patients were treated. Two patients (16.6 %) achieved a partial response and 7 patients (58.3 %) stable disease. Responses were seen in soft tissue, lung and brain metastases. Median disease-free and OS times were 3.7 and 7.8 months, respectively. Treatment was well-tolerated. Main toxicities were grade 3 asymptomatic lymphopenia in 6 patients, grade 3 leucopenia in 2 patients, and grade 3 thrombocytopenia in 1 patient. The authors concluded that these preliminary results suggested that the combination of bevacizumab and weekly paclitaxel is active and safe in patients with metastatic melanoma, warranting further investigation.
The NET Task Force of the National Cancer Institute GI Steering Committee (Kulke et al, 2011) convened a clinical trials planning meeting to identify key unmet needs, develop appropriate study end points, standardize clinical trial inclusion criteria, and formulate priorities for future neuroendocrine tumor (NET) studies for the United States cooperative group program. Emphasis was placed on the development of well-designed clinical trials with clearly defined efficacy criteria. Key recommendations include the evaluation of pancreatic NET separately from NETs of other sites and the exclusion of patients with poorly differentiated histologies from trials focused on low-grade histologies. Specific recommendations for ongoing and future studies on carcinoid tumors and pancreatic NETs are: (i) successful completion of the ongoing phase III study of bevacizumab and IFN in patients with advanced carcinoid tumors may define the role of bevacizumab in these patients, and (ii) everolimus is active in patients with advanced pancreatic NETs. A randomized phase II study comparing everolimus alone with combination of everolimus plus bevacizumab in patients with pancreatic NET will build on the recent observation of activity with everolimus alone, and may help define the potential additive activity of bevacizumab in this setting.
In a multi-center, phase II trial. Hobday and colleagues (2015) evaluated the effectiveness of combination therapy of temsirolimus and bevacizumab in patients with pancreatic neuroendocrine tumors (PNET). These investigators conducted a 2-stage single-arm phase II trial of the mammalian target of rapamycin (mTOR) inhibitor temsirolimus 25 mg intravenously (IV) once-weekly and bevacizumab 10 mg/kg IV once every 2 weeks in patients with well or moderately differentiated PNETs and progressive disease by Response Evaluation Criteria in Solid Tumors (RECIST) within 7 months of study entry. Co-primary end-points were tumor response rate and 6-month PFS. A total of 58 patients were enrolled, and 56 patients were eligible for response assessment. Confirmed response rate (RR) was 41 % (23 of 56 patients); PFS at 6 months was 79 % (44 of 56). Median PFS was 13.2 months (95 % CI: 11.2 to 16.6). Median OS was 34 months (95 % CI: 27.1 to “not reached”). For evaluable patients, the most common grade 3 to 4 AEs attributed to therapy were hypertension (21 %), fatigue (16 %), lymphopenia (14 %), and hyperglycemia (14 %). The authors concluded that the combination of temsirolimus and bevacizumab had substantial activity and reasonable tolerability in a multi-center phase II trial, with RR of 41 %, well in excess of single targeted agents in patients with progressive PNETs. Six-month PFS was a notable 79 % in a population of patients with disease progression by RECIST criteria within 7 months of study entry. They stated that on the basis of this trial, continued evaluation of combination mTOR and VEGF pathway inhibitors is warranted.
Head and neck cancer
In a phase II clinical trial, Argiris et al (2011) hypothesized that bevacizumab will potentiate the activity of pemetrexed in squamous cell carcinoma of the head and neck (SCCHN). Patients with previously untreated, recurrent, or metastatic SCCHN were treated with pemetrexed 500 mg/m(2) and bevacizumab 15 mg/kg given intravenously every 21 days with folic acid and B-12 supplementation until disease progression. Primary end point was time-to-progression (TTP). DNA was isolated from whole blood samples for the detection of polymorphisms in thymidylate synthase, methylenetetrahydrofolate reductase (MTHFR), and VEGF. A total of 40 patients were enrolled. The median TTP was 5 months, and the median OS was 11.3 months. In 37 evaluable patients, the overall response rate was 30 %, including a complete response rate of 5 %, and the disease control rate was 86 %. Grade 3 to 5 bleeding events occurred in 6 patients (15 %): 4 were grade 3, and 2 were fatal. Other serious toxicities in 10 % or more of patients included neutropenia (10 %) and infection (12.5 %). One patient died of sepsis after receiving 8 cycles of therapy. For the MTHFR A1298C (rs1801131) single nucleotide polymorphisms, homozygote patients with AA had worse OS (p = 0.034). The authors concluded that the addition of bevacizumab to pemetrexed resulted in promising efficacy outcomes in SCCHN. Bleeding events were frequent but some may have been due to natural history of disease. Polymorphisms in MTHFR may offer potential for treatment individualization. They stated that bevacizumab-containing regimens should be further investigated in SCCHN.
Hereditary hemorrhagic telangiectasia
In a single-center, phase 2 clinical trial, Dupuis-Girod et al (2012) examined the effectiveness of bevacizumab in reducing high cardiac output (CO) in severe hepatic forms of hereditary hemorrhagic telangiectasia (HHT) and evaluated improvement in epistaxis duration and quality of life. Patients were 18 to 70 years old and had confirmed HHT, severe liver involvement, and a high cardiac index related to HHT. Bevacizumab, 5 mg/kg of body weight, every 14 days for a total of 6 injections. The total duration of the treatment was 2.5 months; patients were followed-up for 6 months after the beginning of the treatment. Main outcome measure was decrease in CO at 3 months after the first injection, evaluated by echocardiography. A total of 25 patients were included between March 2009 and November 2010. Of the 24 patients who had echocardiograms available for re-read, there was a response in 20 of 24 patients with normalization of cardiac index (complete response [CR]) in 3 of 24, partial response (PR) in 17 of 24, and no response in 4 cases. Median cardiac index at beginning of the treatment was 5.05 L/min/m(2) (range of 4.1 to 6.2) and significantly decreased at 3 months after the beginning of the treatment with a median cardiac index of 4.2 L/min/m(2) (range of 2.9 to 5.2; p < 0.001). Median cardiac index at 6 months was significantly lower than before treatment (4.1 L/min/m(2); range of 3.0 to 5.1). Among 23 patients with available data at 6 months, these researchers observed CR in 5 cases, PR in 15 cases, and no response in 3 cases. Mean duration of epistaxis, which was 221 mins/month (range of 0 to 947) at inclusion, had significantly decreased at 3 months (134 mins; range of 0 to 656) and 6 months (43 mins; range of 0 to 310) (p = 0.008). Quality of life had significantly improved. The most severe adverse events were 2 cases of grade 3 systemic hypertension, which were successfully treated. The authors concluded that in this preliminary study of patients with HHT associated with severe hepatic vascular mal-formations and high CO, administration of bevacizumab was associated with a decrease in CO and reduced duration and number of episodes of epistaxis. Drawbacks of this study included small sample size and lack of a control group. The authors stated that it is unclear if this treatment could be definitive or a bridging therapy while patients are waiting for a liver transplant. They noted that longer follow-up studies are needed to determine the duration of HHT efficacy and whether maintenance therapy is needed.
In a phase II clinical trial, White and colleagues (2013) compared bevacizumab and bortezomib versus bortezomib in relapsed or refractory multiple myeloma (MM). Patients with relapsed or refractory MM were randomized to receive bortezomib (1.3 mg/m(2) on days 1, 4, 8, and 11 of each 21-day cycle) and either placebo or bevacizumab (15 mg/kg on day 1 of each cycle) for up to 8 cycles. At completion, patients in the bortezomib-plus-bevacizumab arm could continue bevacizumab until they developed progressive disease or unacceptable toxicity. The primary endpoint was PFS. The stratified hazard ratio of PFS for the bevacizumab-containing arm (n = 49) relative to the bortezomib monotherapy arm (n = 53) was 0.743 (95 % CI: 0.43 to 1.28; p = 0.2804); the median PFS was 6.2 months (95 % CI: 4.4 to 8.5 months) and 5.1 months (95 % CI: 4.2 to 7.2 months), respectively; the overall response rates were 51 % and 43.4 % (p = 0.4029), respectively; and the median response duration was 6.9 months (95 % CI: 4.73 to 11.83 months) and 6.0 months (95 % CI: 4.86 to 8.31 months), respectively. Frequent adverse events occurred at similar rates across treatment arms, but hypertension, fatigue, and neuralgia occurred more frequently in the bevacizumab-containing arm. The authors concluded that the addition of bevacizumab to bortezomib in unselected patients with pretreated MM did not result in significant improvements in efficacy outcomes.
According to information from the National Cancer Institute (NCI, 2015), no established anticancer drugs can be considered of proven clinical benefit in vaginal cancer, although patients are often treated with regimens used to treat cervical cancer.
NCCN guidelines (2015) added the first-line combination chemotherapy regimen of pemetrexed/cisplatin/bevacizumab followed by maintenance bevacizumab as a treatment option for patients with unresectable malignant pleural mesothelioma (MPM). This is a category 2A recommendation, based upon a study by Zalcman, et al. (2015). In this French multicenter randomized phase 3 trial, eligible patients had unresectable, histologically proved MPM, age less than 76, no prior chemotherapy, performance score (PS) 0-2, no thrombosis, nor bleeding. Randomized patients (1:1) received pemetrexed 500 mg/m2, cisplatin 75 mg/m2 at day 1, with (arm B) or without bevacizumab (arm A), 15 mg/kg every 21 days, for 6 cycles. Arm B non-progressive patients received bevacizumab maintenance therapy until progression or toxicity. The primary endpoint was overall survival (OS). 445 patients were to be randomized, and 385 events observed, to show a significant OS improvement, with 80% statistical power, 5% a-risk. From February 2008 to January 2014, 448 patients were included in 73 centers. Males comprised 75.4% of subjects, median age was 65.7 years (range 34.7-75.9), and 96.7% had PS 0-1. The IDMC recommended a second interim analysis after 85% of events. On January 1, 2015, the duration since last news was less than 30 days in 105 out of 106 still living patients. Overall survival was significantly longer in the experimental arm (median: 18.8 months, 95%CI[15.9-22.6] versus 16.1 months, 95% CI [14.0-17.9] for the reference arm, (adj.HR = 0.76, 95% CI [0.61; 0.94], p = 0.012). With only 46/448 non-progressive patients at the date of analysis, median progression free survival (PFS) was 9.6 months, 95% CI [8.5-10.6] in bevacizumab arm versus 7.5 months, 95% CI [6.8-8.1] (adj.HR = 0.62, 95% CI [0.50-0.75], p < 0.0001). G3-4 hematological toxicities did not significantly differ in the two arms (49.5% versus 47.3%). Significantly more G3 proteinuria (0.0 versus 3.1%), G3 hypertension (0.0 versus 23%), G3-4 arterial thrombotic events (0.0 versus 2.7%) were observed in bevacizumab arm. The authors concluded that bevacizumab addition to pemetrexed/cis-platin provides a significantly longer survival in patients with MPM, with acceptable toxicity, making this triplet a new treatment paradigm.
In a phase III, double-blind, placebo-controlled trial, Hensley et al (2015) examined if the addition of bevacizumab to gemcitabine-docetaxel increases PFS in patients with uterine leiomyosarcoma (uLMS). Patients with chemotherapy-naive, metastatic, unresectable uLMS were randomly assigned to gemcitabine-docetaxel plus bevacizumab or gemcitabine-docetaxel plus placebo. Progression-free survival, OS, and ORRs were compared to determine superiority. Target accrual was 130 patients to detect an increase in median PFS from 4 months (gemcitabine-docetaxel plus placebo) to 6.7 months (gemcitabine-docetaxel plus bevacizumab). Treatment effects on PFS and OS were described by HRs, median times to event, and 95 % CIs. In all, 107 patients were accrued: gemcitabine-docetaxel plus placebo (n = 54) and gemcitabine-docetaxel plus bevacizumab (n = 53). Accrual was stopped early for futility. No statistically significant differences in grade 3 to 4 toxicities were observed. Median PFS was 6.2 months for gemcitabine-docetaxel plus placebo versus 4.2 months for gemcitabine-docetaxel plus bevacizumab (HR, 1.12; p = 0.58). Median OS was 26.9 months for gemcitabine-docetaxel plus placebo and 23.3 months for gemcitabine-docetaxel plus bevacizumab (HR, 1.07; p = 0.81). Objective responses were observed in 17 (31.5 %) of 54 patients randomly assigned to gemcitabine-docetaxel plus placebo and 19 (35.8 %) of 53 patients randomly assigned to gemcitabine-docetaxel plus bevacizumab. Mean duration of response was 8.6 months for gemcitabine-docetaxel plus placebo versus 8.8 months for gemcitabine-docetaxel plus bevacizumab. The authors concluded that the addition of bevacizumab to gemcitabine-docetaxel for first-line treatment of metastatic uLMS failed to improve PFS, OS, or ORR. Gemcitabine-docetaxel remains a standard first-line treatment for uLMS.
Desmoplastic Small Round Cell Tumor
Desmoplastic small round cell tumor (DSRCT), a rare malignant cancer, is a soft tissue sarcoma that usually affects young boys and men and is found most often in the abdomen. Its name means that it is formed by small, round cancer cells surrounded by scar-like tissue. The most common symptoms include abdominal pain, abdominal mass and symptoms of gastro-intestinal obstruction. Patients with DSRCTs are treated first with chemotherapy, then with surgery to remove the tumor, if possible. Radiation therapy is sometimes given, depending on the tumor. In addition, some patients with DSRCT are candidates for bone marrow transplantation. There is insufficient evidence regarding the clinical value of bevacizumab for the treatment of DSRCT.
de Araujo and Araujo (2014) presented 2 case reports of patients with DSRCT and discussed 2 therapeutic options for this sarcoma. This report focused on men aged 22 and 37 years, respectively. The first patient presented with an abdomino-pelvic mass that was not suitable for surgery. He underwent chemotherapy (adriblastina and cisplatin) with a brief partial remission and survival time of 13 months. The second patient presented with an abdominal mass and underwent partial resection. He received chemotherapy and bevacizumab, resulting in a partial remission and a survival time of 34 months. The extent of surgery and monoclonal antibody use probably had a positive impact on survival. The authors concluded that it is necessary to include specific targeted therapies in an attempt to improve survival.
Pineal Gland Malignancy:
Mansour et al (2014) stated that glioblastoma multiforme (GBM) is the most aggressive subtype of malignant gliomas. Current standard treatment for GBM involves a combination of cyto-reduction through surgical resection, followed by radiation with concomitant and adjuvant chemotherapy (temozolomide). Despite aggressive treatment, these tumors remain undoubtedly fatal, especially in the elderly. Furthermore, tumors present in the pineal gland are extremely rare, accounting for only 0.1 to 0.4 % of all adult brain tumors, with this location adding to the complexity of treatment. These researchers presented a case of GBM, at the rare location of pineal gland, in an elderly patient who was refractory to initial standard of care treatment with radiation and concomitant and adjuvant temozolomide, but who developed a significant response to anti-angiogenic therapy using bevacizumab.
An UpToDate review on “Pineal gland masses” (Moschovi and Chrousos, 2015) does not mention bevacizumab as a therapeutic option. Furthermore, according to National Comprehensive Cancer Network’s Drugs & Biologics Compendium (2015), pineal gland tumor is not a recommended indication of bevacizumab.
In a phase II clinical trial, Hahn and colleagues (2011) evaluated the effectiveness and toxicity of bevacizumab in combination with cisplatin and gemcitabine (CGB) as first-line treatment for patients with metastatic urothelial cancer (UC). Chemotherapy-naive patients with metastatic or unresectable UC received cisplatin 70 mg/m(2) on day 1, gemcitabine 1,000 to 1,250 mg/m(2) on days 1 and 8, and bevacizumab 15 mg/kg on day 1, every 21 days. A total of 43 patients with performance status of 0 (n = 26) or 1 (n = 17) and median age of 66 years were evaluable for toxicity and response. Grade 3 to 4 hematologic toxicity included neutropenia (35 %), thrombocytopenia (12 %), anemia (12 %), and neutropenic fever (2 %). Grade 3 to 5 non-hematologic toxicity included deep vein thrombosis/pulmonary embolism (21 %), hemorrhage (7 %), cardiac (7 %), hypertension (5 %), and proteinuria (2 %). Three treatment-related deaths (CNS hemorrhage, sudden cardiac death, and aortic dissection) were observed. Best response by RECIST was CR in 8 patients (19 %) and PR in 23 patients (53 %), for an ORR of 72 %. Stable disease lasting greater than or equal to 12 weeks occurred in 4 patients (9 %), and progressive disease occurred in 6 patients (14 %). With a median follow-up of 27.2 months (range of 3.5 to 40.9 months), median PFS was 8.2 months (95 % CI: 6.8 to 10.3 months) with a median OS time of 19.1 months (95 % CI: 12.4 to 22.7 months). The study-defined goal of 50 % improvement in PFS was not met. The authors concluded that CGB demonstrated promising OS and anti-angiogenic treatment-related toxicities in the phase II setting of metastatic UC. They stated that the full risk/benefit profile of CGB in patients with metastatic UC will be determined by an ongoing phase III inter-group trial.
Kurtoglu et al (2015) stated that despite recent advances in the identification of genomic alterations that lead to urothelial oncogenesis in-vitro, patients with advanced urothelial carcinomas continue to have poor clinical outcomes. These researchers focused on targeted therapies that have yielded the most promising results alone or combined with traditional chemotherapy, including the anti-angiogenesis agent bevacizumab, the human epidermal growth factor receptor 2 antibody trastuzumab, and the tyrosine kinase inhibitor cabozantinib. They also described ongoing and developing clinical trials that use innovative approaches, including dose-dense scheduling of singular chemotherapy combinations, prospective screening of tumor tissues for mutational targets and biomarkers to predict chemo-sensitivity before the determination of the therapeutic regimen, and novel agents that target proteins in the immune checkpoint regulation pathway (programmed cell death protein 1 [PD-1] and anti-PD-ligand 1) that have shown significant potential in pre-clinical models and early clinical trials. New agents and targeted therapies, alone or combined with traditional chemotherapy, will only be validated through accrual to developing clinical trials that aim to translate these therapies into individualized treatments and improved survival rates in urothelial carcinoma.
Furthermore, the National Cancer Institute’s PDQ on “Bladder cancer treatment -- for health professionals” (2015) and the NCCN’s clinical practice guideline on “Bladder cancer” (Version 2.2015) do not mention bevacizumab as a therapeutic option.
Recommended Dosing for FDA-approved Indications
Bevacizumab is available as Avastin in an Intravenous Solution: 25 MG/ML (100mg and 400mg vials).
According to the FDA-approved labeling of Avastin, the dosing for metastatic colorectal cancer is:
The recommended dosing of Avastin for non−squamous non−small cell lung cancer is 15 mg/kg IV every 3 weeks with carboplatin/paclitaxel.
The recommended dosing of Avastin for glioblastoma is 10 mg/kg IV every 2 weeks.
The recommended dosing of Avastin for metastatic renal cell carcinoma (mRCC) is 10 mg/kg IV every 2 weeks with interferon alfa.
The recommended dosing for persistent, recurrent, or metastatic carcinoma of the cervix is 15 mg/kg IV every 3 weeks with paclitaxel/cisplatin or paclitaxel/topotecan.
The recommended dosing of Avastin for platinum-resistant recurrent epithelial ovarian, fallopian tube or primary peritoneal cancer is:
Please consult the Full Prescribing Information for complete details for recommended dose adjustments.
|CPT Codes / HCPCS Codes / ICD-10 Codes|
|Information in the [brackets] below has been added for clarification purposes.  Codes requiring a 7th character are represented by "+":|
|Other CPT codes related to the CPB:|
|67028||Intravitreal injection of a pharmacologic agent (separate procedure)|
|96401 - 96450||Chemotherapy administration|
|HCPCS codes covered if selection criteria are met:|
|J9035||Injection, bevacizumab, 10 mg [for neovascular (wet) age related macular degeneration see C9257]|
|C9257||Injection, bevacizumab, 0.25 mg [covered for neovascular (wet) age related macular degeneration]|
|Other HCPCS codes related to the CPB:|
|Q0083 - Q0085||Chemotherapy administration|
|J9190||Injection, fluorouracil, 500 mg|
|ICD-10 codes covered if selection criteria are met [See CPB 701 for ocular indications]:|
|B39.4 [H32 also required]||Histoplasmosis capsulati, retinitis|
|B39.5 [H32 also required]||Histoplasmosis duboisli, retinitis|
|B39.9 [H32 also required]||Histoplasmosis, unspecified , retinitis|
|C17.0 - C17.9||Malignant neoplasm of small intestine, including duodenum|
|C18.0 - C21.8||Malignant neoplasm of colon, rectum, rectosigmoid junction and anus|
|C22.3||Angiosarcoma of liver|
|C34.00 - C34.92||Malignant neoplasm of the bronchus and lung [non-squamous, non-small cell] [covered for non- small cell lung cancer and non -squamous cell lung cancer]|
|C38.4||Malignant neoplasm of pleura [solitary fibrous tumors]|
|C45.0||Mesothelioma of pleura|
|C48.0 - C48.8||Malignant neoplasm of retroperitoneum and peritoneum|
|C49.0 - C49.9||Malignant neoplasm of other connective and soft tissue, [angiosarcoma][hemangiopericytoma] [not covered for desmoplastic small round blue cell tumor]|
|C50.011 - C50.929||Malignant neoplasm of breast|
|C52||Malignant neoplasm of vagina|
|C53.0 - C53.9||Malignant neoplasm of cervix uteri|
|C54.1 - C54.3, C54.9||Malignant neoplasm of corpus uteri, except isthmus [recurrent, metastatic endometrial cancer in members who have progressed on prior cytotoxic chemotherapy]|
|C56.1 - C56.9||Malignant neoplasm of ovary [epithelial]|
|C57.00 - C57.02||Malignant neoplasm of fallopian tube|
|C64.1 - C64.9||Malignant neoplasm of kidney [renal cell carcinoma]|
|C71.0 - C71.9||Malignant neoplasm of brain|
|C72.0||Malignant neoplasm of spinal cord|
|E08.311, E08.321, E08.331, E08.341, E08.351, E09.311, E09.321, E09.331, E09.341, E09.351, E10.311, E10.321, E10.331, E10.341, E10.351, E11.311, E11.321, E11.331, E11.341, E11.351, E13.311, E13.321, E13.331, E13.341, E13.351||Diabetic macular edema|
|H30.001 - H30.049||Focal chorioretinal inflammaton|
|H30.101 - H30.149||Disseminated chorioretinal inflammation|
|H30.891 - H30.93||Other and unspecified chorioretinal inflammation|
|H31.20 - H31.29||Hereditary choroidal dystrophies|
|H32 [use with B39.4, B39.5, B39.9]||Chorioretinal disorders in diseases classified elsewhere|
|H34.811 - H34.819||Central retinal vein occlusion|
|H34.831 - H34.839||Venous tributary(branch) occlusion|
|H35.011 - H35.019||Changes in retinal vascular appearance|
|H35.041 - H35.049||Retinal microaneurysms unspecified|
|H35.051 - H35.059||Retinal neovascularization unspecified|
|H35.061 - H35.069||Retinal vasculitis|
|H35.09||Other intraretinal microvascular abnormalities|
|H35.101 - H35.23||Retinopathy of prematurity and other non-diabetic proliferative retinopathy|
|H35.32||Exudative age-related macular degeneration|
|H35.33||Angioid streaks of macula|
|H35.50 - H35.54||Hereditary retinal dystrophies|
|H40.50x0 - H40.53x4||Glaucoma secondary to other eye disorders|
|H44.20 - H44.23||Degenerative myopia|
|Q82.8||Other specified congenital malformations of skin [pseudoxanthoma elasticum]|
|Z85.038||Personal history of malignant neoplasm of large intestine|
|Z85.048||Personal history of malignant neoplasm of rectum, rectosigmoid junction, and anus|
|Z85.3||Personal history of malignant neoplasm of breast|
|Z85.43||Personal history of malignant neoplasm of ovary [epithelial]|
|Z85.528||Personal history of other malignant neoplasm of kidney [renal cell carcinoma]|
|ICD-10 codes not covered for indications listed in the CPB (not all-inclusive):|
|A18.50 - A18.59||Tuberculosis of eye|
|A51.43||Secondary syphilitic oculopathy|
|B25.9||Cytomegaloviral disease, unspecified (retinitis)|
|C00.0 - C16.9
C22.0 - C33
C37 - C44.99
C46.0 - C47.9
C51.0 - C51.9
C57.10 - C63.9
C66.1 - C70.9
C72.0 - C86.6
C88.2 - C94.32
C94.80 - C96.4
C96.a - C96.9
|Malignant neoplasms [except those specifically listed as covered]|
|D3a.00 - D3a.8||Benign neuroendocrine tumors|
|D14.1||Benign neoplasm of larynx [laryngeal papillomatosis]|
|D21.4||Benign neoplasm of connective and other soft tissue of abdomen [stromal tumor]|
|D32.0||Benign neoplasm of cerebral meninges [meningioma]|
|D33.3||Benign neoplasm of cranial nerves [acoustic neuroma]|
|D48.1 - D48.2||Neoplasm of uncertain behavior of connective and other soft tissue [gastrointestinal stromal tumors]|
|D49.2||Neoplasm of unspecified behavior of bone, soft tissue, and skin [desmoid tumor]|
|E08.311 - E08.359
E09.311 - E09.359
E10.311 - E10.359
E11.311 - E11.359
E13.311 - E13.359
|E88.49||Other mitochondrial metabolism disorders [NARP syndrome]|
|G93.6||Cerebral edema [radiation-induced]|
|H16.241 - H16.249
H21.331 - H21.339
H44.001 - H44.9
|Disorders of globe|
|H30.20 - H30.819
H31.001 - H31.129
|Pars planitis, Harada's disease, chorioretinal scars and degenerations except angioid streaks|
|H31.301 - H31.9||Choroidal hemorrhage, detachment, and other disorders|
|H33.001 - H33.8||Retinal detachments and defects|
|H34.821 - H34.829
H35.70 - H35.739
|Venous engorgement and separation of retinal layers|
|H35.021 - H35.029||Exudative retinopathy [Coat's disease]|
|H35.071 - H35.079||Retinal telangiectasis|
|H35.30 - H35.31
H35.351 - H35.359
H35.461 - H35.469
|Degeneration of macula and posterior pole other than exudative senile macular degeneration and peripheral retinal degenerations.|
|H35.60 - H35.63
H35.81 - H35.9
|Other retinal disorders|
|H40.001 - H42||Glaucoma|
|I78.0||Hereditary hemorrhagic telangiectasia|
|O01.0 - O01.9||Hydatidiform mole|
|Q85.00 - Q85.02||Neurofibromatosis [nonmalignant]|
|Q85.8||Other phakomatoses, not elsewhere classified [von Hippel Lindau disease]|
|T66.xxx+||Radiation sickness, unspecified [radiation necrosis]|