Infrequent TRIB3 coding variants and coronary artery disease in type 2 diabetes

Sabrina Prudente, Diego Bailetti, Christine Mendonca, Gaia Chiara Mannino, Andrea Fontana, Francesco Andreozzi, Timothy Hastings, Luana Mercuri, Federica Alberico, Giorgio Basile, Massimiliano Copetti, Giorgio Sesti, Alessandro Doria, Vincenzo Trischitta

Research output: Contribution to journalArticle

Abstract

Objective: Genes that modulate insulin sensitivity may also be involved in shaping the risk of coronary artery disease (CAD). The relatively common TRIB3 Q84R polymorphism (rs2295490) has been associated with abnormal insulin signaling, endothelial dysfunction, insulin resistance, and pro-atherogenic phenotypes. The aim of our study was to investigate the association between low-frequency TRIB3 coding variants and CAD in patients with type 2 diabetes (T2D). Methods: Three case-control studies for CAD from Italy and US were analyzed, for a total of 1565 individuals, all with type 2 diabetes. Infrequent variants were identified by re-sequencing TRIB3 exons in 140 "extreme cases" and 140 "super-controls" and then genotyped in all study subjects. Results: TRIB3 infrequent variants (n = 8), considered according to a collapsing rare variants framework, were significantly associated with CAD in diabetic patients from Italy (n = 700, OR = 0.43, 95% CI 0.20-0.91; p = 0.027), but not from the US (n = 865, OR = 1.22, 95% CI 0.69-2.18; p = 0.49). In the Italian sets, the association was especially strong among individuals who also carried the common R84 variant. Conclusion: Although preliminary, our finding suggests a role of TRIB3 low-frequency variants on CAD among Italian patients with T2D. Further studies are needed to address the role of TRIB3 infrequent variants in other populations of both European and non-European ancestries.

Original languageEnglish
Pages (from-to)334-339
Number of pages6
JournalAtherosclerosis
Volume242
Issue number1
DOIs
Publication statusPublished - Sep 1 2015

Keywords

  • Coronary artery disease
  • Infrequent variants
  • Insulin sensitivity
  • Insulin signaling
  • Type 2 diabetes mellitus

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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    Prudente, S., Bailetti, D., Mendonca, C., Mannino, G. C., Fontana, A., Andreozzi, F., Hastings, T., Mercuri, L., Alberico, F., Basile, G., Copetti, M., Sesti, G., Doria, A., & Trischitta, V. (2015). Infrequent TRIB3 coding variants and coronary artery disease in type 2 diabetes. Atherosclerosis, 242(1), 334-339. https://doi.org/10.1016/j.atherosclerosis.2015.07.030