Sex differences in the effect of diabetes mellitus on platelet reactivity and coronary thrombosis: From the Assessment of Dual Antiplatelet Therapy with Drug-Eluting Stents (ADAPT-DES) study

Gennaro Giustino, Björn Redfors, Roxana Mehran, Ajay J. Kirtane, Usman Baber, Philippe Généreux, Bernhard Witzenbichler, Franz Josef Neumann, Giora Weisz, Akiko Maehara, Michael J. Rinaldi, D. Christopher Metzger, Timothy D. Henry, David A. Cox, Peter L. Duffy, Ernest L. Mazzaferri, Bruce R. Brodie, Thomas D. Stuckey, George D. Dangas, Sorin J. BrenerM. Ozgu Ozan, Gregg W. Stone

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Background Whether the consequences of diabetes mellitus (DM) are worse for women than for men treated with drug-eluting stents (DES) and antiplatelet therapy remain unclear. Methods Patients from the Assessment of Dual Antiplatelet Therapy With Drug-Eluting Stents study were stratified according to sex and DM status. We investigated the sex-specific effect of DM on high on-clopidogrel platelet reactivity (HPR), defined as a P2Y12 reaction units ≥ 208, and the adjusted association of DM on the 2-year risk for coronary thrombotic events (CTE), defined as spontaneous myocardial infarction or definite or probable stent thrombosis. Results Out of 8582 patients included in the study, 829 were women with DM (9.6%) and 1954 were men with DM (16.2%). The prevalence of insulin-treated DM (ITDM) was greater in women (p < 0.0001). By multivariable logistic regression, DM was associated with a greater likelihood of HPR that was uniform between sexes (pint = 0.88). Following adjustment for baseline variables and HPR, in women a stepwise increase in risk for CTEs was observed in the transition from no DM to non–ITDM (NITDM) (adjusted hazard ratio [adjHR]: 1.31; 95% CI: 0.78–2.18) to ITDM (adjHR: 2.69; 95% CI: 1.23–3.45). This increase in risk associated with subtypes of DM was of smaller magnitude in men (for NITDM, adjHR: 1.04; 95% CI: 0.77–1.39; for ITDM, adjHR: 1.46; 95% CI: 1.05–2.03; pint = 0.016). Conclusions In a population treated with DES and antiplatelet therapy, the risk for CTE associated with DM seems to be greater in women and was independent of HPR.

Original languageEnglish
Pages (from-to)20-25
Number of pages6
JournalInternational Journal of Cardiology
Volume246
DOIs
StatePublished - 1 Nov 2017

Keywords

  • Coronary thrombosis
  • Diabetes mellitus
  • Platelet reactivity
  • Sex

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