Key clinical point: In women with 2-3 ipsilateral foci of breast cancer (BC), breast-conserving surgery (BCS; lumpectomy plus adjuvant radiation) resulted in a local recurrence rate that was below the a priori determined clinically acceptable threshold of 8%.
Major finding: BCS resulted in a highly acceptable 5-year local recurrence rate of 3.1% (95% CI 1.3%-6.4%) in patients with multiple ipsilateral BC.
Study details: Findings are from the phase 2 American College of Surgeons Oncology Group Z11102 (Alliance) trial including 204 women aged ≥40 years with multiple ipsilateral BC who underwent BCS.
Disclosures: This study was supported by the US National Institutes of Health. Some authors declared owning stocks; serving on editorial boards, in leadership positions, or as employees; receiving research funding, honoraria, or travel and accommodation expenses; or having other ties with various sources.
Source: Boughey JC et al. Local recurrence after breast-conserving therapy in patients with multiple ipsilateral breast cancer: Results from ACOSOG Z11102 (Alliance). J Clin Oncol. 2023 (Mar 28). Doi: 10.1200/JCO.22.02553