ArticleBMC medicine2025
Adjuvant therapeutic efficacy of low-dose aspirin on short-term outcomes of patients with cancer-associated venous thromboembolism.
Article in BMC medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundAlthough aspirin was reported to have primary thromboprophylactic efficacy on cancer patients, its adjuvant role in the treatment of patients with cancer-associated venous thromboembolism (VTE) has been unclear yet.
methodsPatients with cancer-associated VTE were retrospectively analyzed and divided into aspirin group and non-aspirin group based on whether they underwent low-dose aspirin (100 mg daily) in addition to conventional anticoagulants. Propensity score matching was used to balance baseline characteristics between the aspirin group and non-aspirin group in a 1:2 ratio. The primary, secondary, and tertiary outcomes were VTE recurrence, mortality and major bleeding, and net clinical benefit (NCB), at 6 months after VTE diagnosis, respectively.
resultsThe VTE recurrence occurred in 13 (3.1%) in the aspirin group (N = 423) and 55 (6.5%) in the non-aspirin group (N = 846) (hazard ratio [HR] 0.546, 95% confidence interval [CI] [0.298-0.988], P = 0.011). The PE-related mortality occurred in 12 (2.8%) in the aspirin group and 46 (5.4%) in the non-aspirin group (HR 0.535, 95% CI [0.283-0.909], P = 0.037). The all-cause mortality occurred in 108 (25.5%) in the aspirin group and 228 (27.0%) in the non-aspirin group (HR 0.983, 95% CI [0.782-1.237], P = 0.887). The major bleeding occurred in 52 (12.3%) in the aspirin group and 46 (5.4%) in the non-aspirin group (HR 2.448, 95% CI [1.646-3.641], P < 0.001). The NCB occurred in 274 (64.8%) in the aspirin group and 554 (65.5%) in the non-aspirin group (HR 0.976, 95% CI [0.801-1.189], P = 0.812).
conclusionsFor patients with cancer-associated VTE, the adjuvant use of low-dose aspirin based on conventional anticoagulants improves VTE recurrence and PE-related mortality, compared with isolated use of anticoagulants, whereas it does not improve all-cause mortality or net clinical benefit. Adjuvant low-dose aspirin use is associated with an increased risk of bleeding.
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