Key clinical point: The risk for hemorrhage was not significantly different in patients with breast cancer (BC) aged ≥ 66 years who received direct oral anticoagulants (DOAC) concurrently with tamoxifen vs aromatase inhibitors (AI).
Major finding: During a median follow-up of 166 days, the risk for major hemorrhage requiring an emergency department visit or hospitalization (2.5% vs 3.3%; weighted hazard ratio [HR] 0.68; 95% CI 0.44-1.06) or any hemorrhage (4.9% vs 4.6%; weighted HR 1.04; 95% CI 0.75-1.43) was not higher with tamoxifen+DOAC compared with AI+DOAC.
Study details: Findings are from a population-based, retrospective cohort study including 4753 patients aged ≥ 66 years with BC who were prescribed tamoxifen or AI concurrently with a DOAC.
Disclosures: This study was supported by Canadian Institutes of Health Research and ICES. Some authors declared serving on advisory boards of or receiving grants, personal fees, or travel expenses from several sources.
Source: Wang T-F et al. Hemorrhage risk among patients with breast cancer receiving concurrent direct oral anticoagulants with tamoxifen vs aromatase inhibitors. JAMA Netw Open. 2022;5(6):e2219128 (Jun 28). Doi: 10.1001/jamanetworkopen.2022.19128