[Safety and efficacy of bevacizumab combined with taxanes in the first-line treatment of metastatic breast cancer: ATHENA study-France]. / Tolérance et efficacité du bévacizumab en association aux taxanes en première ligne dans le cancer du sein métastatique : étude ATHENA-France.

The efficacy of the combination bevacizumab-chemotherapy in the first-line treatment of metastatic breast cancer (mBC) was demonstrated in several randomized clinical trials. However, limited safety data is available in daily medical practice. ATHENA is an international phase-IIIb study conducted in 2,251 patients with locally advanced or mBC, treated in first-line with bevacizumab combined with taxanes-based chemotherapy. The primary objective is safety assessment. In France, 365 patients were included. Their median age was 56 years (24-93 years) and ECOG performance status was 0 or 1 in 93.9% of patients. Bevacizumab was essentially combined with a taxanes monotherapy: docetaxel (37.3%) or paclitaxel (28.8%) or taxanes-based combination therapy (9.4%). The most frequent grade superior or equal to 3 adverse event (AE) was neutropenia (34.5%). Grade superior or equal to 3 AEs of special interest related to bevacizumab were arterial and venous thromboembolism (5.1%), high blood pressure (4.2%), proteinuria (2.3%) and hemorrhage (2%). Median time to progression was 9.5 months (95% CI: 8.8-10.4). The safety profile and the efficacy of the combination bevacizumab-taxanes in a population more representative of daily oncology practice in France are comparable to those reported in clinical trials in mBC.

Neoadjuvant bevacizumab, trastuzumab, and chemotherapy for primary inflammatory HER2-positive breast cancer (BEVERLY-2): an open-label, single-arm phase 2 study.

BACKGROUND: Bevacizumab and trastuzumab are efficacious for treatment of advanced or HER2-positive metastatic breast cancer; however, few data exist for this regimen in inflammatory breast cancer. In our phase 2 trial, we aimed to assess efficacy and safety of neoadjuvant bevacizumab combined with trastuzumab and chemotherapy in patients with primary HER2-positive inflammatory breast cancer. METHODS: In our phase 2, multicentre, open-label, single-arm, non-comparative trial, we enrolled women (aged ≥ 18 years) with histologically confirmed HER2-positive non-metastatic inflammatory breast cancer at private or public oncology centres in France. Before surgery, patients were treated with fluorouracil, epirubicin, cyclophosphamide, and bevacizumab (cycles 1-4) and docetaxel, bevacizumab, and trastuzumab (cycles 5-8) in 3-week cycles. After surgery, patients received adjuvant radiotherapy, trastuzumab, and bevacizumab. For the primary endpoint, we assessed the proportion of patients who achieved a pathological complete response (defined by central review of surgical specimens according to Sataloff classification, counting missing data as failure) and adverse events in all enrolled patients. This study is registered with ClinicalTrials.gov, number NCT00717405. FINDINGS: Between Oct 23, 2008, and Oct 28, 2009, we enrolled 52 patients at 21 centres. 42 (81%) of 52 patients received all eight cycles of neoadjuvant therapy and 49 (94%) underwent surgery. After neoadjuvant therapy, 33 of 52 patients had a pathological complete response according to central review (63·5%, 95% CI 49·4-77·5). The most common adverse events were asthenia and nausea (both occurred in 36 [69%] of 52 patients). 25 (48%) patients had grade 3-4 neutropenia, which was the most common grade 3-4 adverse event. Only one grade 3 or worse adverse event regarded as related to bevacizumab was reported (hypertension, one patient). Four patients (8%) had cardiac failure. INTERPRETATION: Neoadjuvant treatment with bevacizumab, trastuzumab, and chemotherapy was efficacious and well tolerated in patients with previously untreated primary inflammatory breast cancer. Further confirmation of use of bevacizumab in inflammatory breast cancer is needed. FUNDING: Roche (France).