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Course: Atorvastatin for Anthracycline-Associated Cardiac Dysfunction: The STOP-CA Randomized Clinical Trial

CME Credits: 1.00

Released: 2023-08-08

Key Points

Question Does 1 year of treatment with atorvastatin, 40 mg/d, started prior to anthracycline-based chemotherapy among patients with lymphoma, reduce the chance of a significant decrease in left ventricular ejection fraction (LVEF) compared with placebo?
Findings In this randomized trial of 300 adult patients with lymphoma, the percentage of patients with a decrease in cardiac function (-10% absolute decline in LVEF from prior to chemotherapy to a final value of <55% over the 12-month study period), among those randomized to atorvastatin was 9% compared with a rate of 22% among patients randomized to placebo. This difference met statistical significance.
Meaning Atorvastatin reduced cardiac functional impairment in patients with lymphoma treated with anthracyclines. This finding may support the use of atorvastatin in patients with lymphoma at risk of cardiac dysfunction due to anthracycline treatment.

Abstract

Importance Anthracyclines treat a broad range of cancers. Basic and retrospective clinical data have suggested that use of atorvastatin may be associated with a reduction in cardiac dysfunction due to anthracycline use.
Objective To test whether atorvastatin is associated with a reduction in the proportion of patients with lymphoma receiving anthracyclines who develop cardiac dysfunction.
Design, Setting, and Participants Double-blind randomized clinical trial conducted at 9 academic medical centers in the US and Canada among 300 patients with lymphoma who were scheduled to receive anthracycline-based chemotherapy. Enrollment occurred between January 25, 2017, and September 10, 2021, with final follow-up on October 10, 2022.
Interventions Participants were randomized to receive atorvastatin, 40 mg/d (n?=-150), or placebo (n?=-150) for 12 months.
Main Outcomes and Measures The primary outcome was the proportion of participants with an absolute decline in left ventricular ejection fraction (LVEF) of -10% from prior to chemotherapy to a final value of <55% over 12 months. A secondary outcome was the proportion of participants with an absolute decline in LVEF of -5% from prior to chemotherapy to a final value of <55% over 12 months.
Results Of the 300 participants randomized (mean age, 50 [SD, 17] years; 142 women [47%]), 286 (95%) completed the trial. Among the entire cohort, the baseline mean LVEF was 63% (SD, 4.6%) and the follow-up LVEF was 58% (SD, 5.7%). Study drug adherence was noted in 91% of participants. At 12-month follow-up, 46 (15%) had a decline in LVEF of 10% or greater from prior to chemotherapy to a final value of less than 55%. The incidence of the primary end point was 9% (13/150) in the atorvastatin group and 22% (33/150) in the placebo group (P?=?.002). The odds of a 10% or greater decline in LVEF to a final value of less than 55% after anthracycline treatment was almost 3 times greater for participants randomized to placebo compared with those randomized to atorvastatin (odds ratio, 2.9; 95% CI, 1.4-6.4). Compared with placebo, atorvastatin also reduced the incidence of the secondary end point (13% vs 29%; P?=?.001). There were 13 adjudicated heart failure events (4%) over 24 months of follow-up. There was no difference in the rates of incident heart failure between study groups (3% with atorvastatin, 6% with placebo; P?=?.26). The number of serious related adverse events was low and similar between groups.
Conclusions and Relevance Among patients with lymphoma treated with anthracycline-based chemotherapy, atorvastatin reduced the incidence of cardiac dysfunction. This finding may support the use of atorvastatin in patients with lymphoma at high risk of cardiac dysfunction due to anthracycline use.
Trial Registration ClinicalTrials.gov Identifier:


Educational Objective: To identify the key insights or developments described in this article.


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