BREAST CANCER

The pathologic complete responses were significantly improved with neoadjuvant atezolizumab in combination with nab-paclitaxel plus doxorubicin and cyclophosphamide compared with placebo and chemotherapyin patients with stage 2 or stage 3 triple-negative breast cancer.

Patients with HR-positive, HER2-negative breast cancer experienced significant benefit when treated with neoadjuvant chemotherapy with intense dose-dense epirubicin, paclitaxel, and cyclophosphamide.

Abemaciclib in combination with tamoxifen led to an improvement in overall survival compared with abemaciclib alone in patients with hormone receptor–positive, HER2-negative metastatic breast cancer. Notably, the benefit of the combination was observed across all subgroups in the study, according to findings from the final OS analysis of the nextMONARCH trial presented during the 2020 European Society of Medical Oncology Virtual Congress.

Postmenopausal patients with PIK3CA-mutant, hormone receptor–positive, HER2-negative advanced breast cancer in the SOLAR-1 trial experienced prolonged overall survival with alpelisib and fulvestrant even though the study did not cross the prespecified O’Brien-Fleming efficacy boundary (P ≤ .0161), according to research presented at the 2020 ESMO Virtual Congress.

The combination of atezolizumab, carboplatin, and nab-paclitaxel increased pathological complete response by 10% or more in “immune-rich” patients with high-risk and locally advanced triple-negative breast cancer, as well as turned PD-L1 negative tumors positive most patients treated with immunotherapy, according to the phase 3 NeoTRIPaPDL1 trial data presented at the 2020 ESMO Virtual Congress.

An improvement in progression-free survival and objective response rate was not observed with the addition of ipatasertib to paclitaxel in patients with PIK3CA/AKT1/PTEN-altered hormone receptor–positive, HER2-negative advanced breast cancer.