Rishi J Desai1, Julia Spoendlin1, Helen Mogun1, Joshua J Gagne1. 1. Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
Abstract
STUDY OBJECTIVE: To describe contemporary trends of P2Y12 inhibitor use in patients with acute coronary syndrome (ACS) and comorbid diabetes mellitus (DM) and/or chronic kidney disease (CKD) who have a higher risk of recurring ACS and may benefit from treatment with higher efficacy third-generation agents (prasugrel and ticagrelor). DESIGN: Observational cohort study. SETTING: A large U.S. commercial insurance program (2009-2015). PATIENTS: P2Y12 inhibitor initiated within 2 weeks after an ACS event. MEASUREMENTS AND MAIN RESULTS: We identified 98,649 P2Y12 inhibitor initiators, of whom 24.5% had comorbid DM (no CKD), 10.5% had CKD (no DM), and 12.6% had DM and CKD. Overall, 85.2% of patients initiated clopidogrel, followed by prasugrel (11.6%) and ticagrelor (3.2%). Prasugrel use decreased over time irrespective of preexisting DM and/or CKD; ticagrelor use increased. In logistic regression models accounting for patient demographics and clinical covariates, preexisting DM alone was not associated with prasugrel or ticagrelor versus clopidogrel treatment initiation; however, having CKD with or without DM significantly reduced the likelihood of receiving prasugrel versus clopidogrel (odds ratio [OR] 0.81, 95% confidence interval [CI] 0.74-0.88 for CKD alone; OR 0.91, 95% CI 0.83-0.98 for DM and CKD). Comorbid DM and CKD reduced the odds of initiating ticagrelor versus clopidogrel (OR 0.80, 95% CI 0.70-0.92). PRINCIPAL CONCLUSIONS: We observed lower or similar use of prasugrel and ticagrelor compared with clopidogrel in patients with ACS and comorbid DM and/or CKD. Given the potential for worse clinical outcomes with clopidogrel in these patients, our findings highlight the need to investigate the implications of these trends on recurrent ACS and bleeding events.
STUDY OBJECTIVE: To describe contemporary trends of P2Y12 inhibitor use in patients with acute coronary syndrome (ACS) and comorbid diabetes mellitus (DM) and/or chronic kidney disease (CKD) who have a higher risk of recurring ACS and may benefit from treatment with higher efficacy third-generation agents (prasugrel and ticagrelor). DESIGN: Observational cohort study. SETTING: A large U.S. commercial insurance program (2009-2015). PATIENTS: P2Y12 inhibitor initiated within 2 weeks after an ACS event. MEASUREMENTS AND MAIN RESULTS: We identified 98,649 P2Y12 inhibitor initiators, of whom 24.5% had comorbid DM (no CKD), 10.5% had CKD (no DM), and 12.6% had DM and CKD. Overall, 85.2% of patients initiated clopidogrel, followed by prasugrel (11.6%) and ticagrelor (3.2%). Prasugrel use decreased over time irrespective of preexisting DM and/or CKD; ticagrelor use increased. In logistic regression models accounting for patient demographics and clinical covariates, preexisting DM alone was not associated with prasugrel or ticagrelor versus clopidogrel treatment initiation; however, having CKD with or without DM significantly reduced the likelihood of receiving prasugrel versus clopidogrel (odds ratio [OR] 0.81, 95% confidence interval [CI] 0.74-0.88 for CKD alone; OR 0.91, 95% CI 0.83-0.98 for DM and CKD). Comorbid DM and CKD reduced the odds of initiating ticagrelor versus clopidogrel (OR 0.80, 95% CI 0.70-0.92). PRINCIPAL CONCLUSIONS: We observed lower or similar use of prasugrel and ticagrelor compared with clopidogrel in patients with ACS and comorbid DM and/or CKD. Given the potential for worse clinical outcomes with clopidogrel in these patients, our findings highlight the need to investigate the implications of these trends on recurrent ACS and bleeding events.
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