COMPARATIVE STUDY
JOURNAL ARTICLE
REVIEW

Hepatitis C Virus Infection Is Associated With Increased Cardiovascular Mortality: A Meta-Analysis of Observational Studies

Salvatore Petta, Marcello Maida, Fabio Salvatore Macaluso, Marco Barbara, Anna Licata, Antonio Craxì, Calogero Cammà
Gastroenterology 2016, 150 (1): 145-155.e4; quiz e15-6
26386298

BACKGROUND & AIMS: There have been many studies of the effects of hepatitis C virus (HCV) infection on cardiovascular risk, but these have produced ambiguous results. We performed a meta-analysis of these studies to systematically assess the risk of HCV infection on cardiovascular disease (CVD)-related morbidity and mortality.

METHODS: We searched PubMed Central, Medline, Embase, and Cochrane Library, as well as reference lists of articles, for studies published through July 2015 that compared the occurrence of CVD between HCV-infected and HCV-uninfected subjects, or assessed the prevalence of HCV infection among subjects with CVDs. In total, 22 studies were analyzed. Data on the patient populations and outcomes were extracted from each study by 3 independent observers and combined by a random-effects model.

RESULTS: Compared with uninfected individuals (controls), HCV-infected patients had increased risks of CVD-related mortality (odds ratio [OR], 1.65; 95% confidence interval [CI], 1.07-2.56; P = .02), carotid plaques (OR, 2.27; 95% CI, 1.76-2.94; P < .001), and cerebrocardiovascular events (OR, 1.30; 95% CI, 1.10-1.55; P = .002). Significant heterogeneity was observed in the risk of cerebrocardiovascular disease among individuals with HCV infection. The effect of HCV infection on cerebrocardiovascular disease was stronger in populations with a higher prevalence of diabetes (>10%) or hypertension (>20%) (OR, 1.71; 95% CI, 1.32-2.23; P < .001 for both).

CONCLUSIONS: In a meta-analysis of published studies, individuals with HCV infections were found to be at increased risk for CVD-related morbidity and mortality-especially patients with diabetes and hypertension.

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