Key clinical point: Neoadjuvant palbociclib plus endocrine therapy with letrozole and neoadjuvant chemotherapy demonstrated comparable survival outcomes in high-risk patients with estrogen receptor-positive (ER+), human epidermal growth factor receptor 2 -negative (HER2-) early breast cancer.
Major finding: In the neoadjuvant setting, the 3-year progression-free survival (hazard ratio [HR] 1.01; P = .98) and invasive disease-free survival (HR 0.83; P = .71) were not significantly different between the letrozole+palbociclib and chemotherapy groups.
Study details: Findings are from the phase 2 NeoPAL study including 106 postmenopausal women with ER+/HER2-, high-risk, early, luminal B or node-positive luminal A breast cancer who were randomly assigned to receive neoadjuvant letrozole+palbociclib or neoadjuvant chemotherapy.
Disclosures: This study was supported by the French Breast Cancer InterGroup-UNICANCER and Pfizer. Some authors declared serving on advisory boards or receiving funds, honoraria, fees, or personal support from various sources.
Source: Delaloge S et al. Survival outcomes after neoadjuvant letrozole and palbociclib versus third generation chemotherapy for patients with high-risk oestrogen receptor-positive HER2-negative breast cancer. Eur J Cancer. 2022 (Mar 22). Doi: 10.1016/j.ejca.2022.01.014