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  • Title: Associations between the triglyceride-glucose index and cardiovascular disease in over 150,000 cancer survivors: a population-based cohort study.
    Author: Jung MH, Yi SW, An SJ, Yi JJ, Ihm SH, Han S, Ryu KH, Jung HO, Youn HJ.
    Journal: Cardiovasc Diabetol; 2022 Apr 16; 21(1):52. PubMed ID: 35429972.
    Abstract:
    BACKGROUND: The prevention of subsequent cardiovascular disease (CVD) is an essential part of cancer survivorship care. We conducted the present study to investigate the association between the TyG index (a surrogate marker of insulin resistance) and the risk of cardiovascular disease (CVD) events in cancer survivors. METHODS: Adult cancer patients, who underwent routine health examinations during 2009-2010 and were survived for more than 5 years as of January 1, 2011, were followed for hospitalization of CVD (either ischemic heart disease, stroke, or heart failure) until December 2020. Cox model was used to calculate hazard ratios associated with baseline TyG index (loge [fasting triglyceride (mg) × fasting glucose (mg)/2]) for the CVD hospitalization. RESULTS: A total of 155,167 cancer survivors (mean age 59.9 ± 12.0 years, female 59.1%) were included in this study. A graded positive association was observed between TyG and CVD hospitalization. An 8% elevated risk for CVD hospitalization was observed for a TyG index of 8-8.4 (aHR 1.08 [95% CI 1.01-1.14]); 10% elevated risk for a TyG index of 8.5-8.9 (aHR 1.10 [95% CI 1.03-1.17]); 23% elevated risk for a TyG index of 9.0-9.4 (aHR 1.23 [95% CI 1.15-1.31]); 34% elevated risk for a TyG index of 9.5-9.9 (aHR 1.34 [95% CI 1.23-1.47]); and 55% elevated risk for a TyG index ≥ 10 compared to the reference group (TyG index < 8). Per 1-unit increase in the TyG index, a 16% increase in CVD hospitalization and a 45% increase in acute myocardial infarction hospitalization were demonstrated. Graded positive associations were evident for atherosclerotic CVD subtypes, such as ischemic heart disease, acute myocardial infarction, and ischemic stroke, but not for hemorrhagic stroke or heart failure. CONCLUSIONS: The TyG index may serve as a simple surrogate marker for the risk stratification of future CVD events, particularly atherosclerotic subtypes, in cancer survivors.
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