Most of the studies included in this review had large sample sizes that produced the very precise estimates. Thirdly, some check details studies may not get complete information of interviews regarding alcohol consumption, which can affect the estimation of meta-analysis. Finally, there exist some disparities in the distribution of healthcare resources in China, some low income lacked resources to carry out an investigation. The information bias may still

affect the pooled results although we have restricted sampling methods in inclusion criteria. In conclusion, this meta-analysis was an alternative way to estimate the NAFLD prevalence in the mainland of China, which is necessary to assess the NAFLD burden and to implement cost-effective interventions. Nonetheless, a nationwide prevalence investigation should be conducted to confirm the estimates and determine more accurate rates for specific populations. We thank all our colleagues working in the Department of Epidemiology and Health Statistics, School of public health of Central South University. This paper was supported by the fundamental research funds for the central universities of central south university (2012zzts105) and Graduate’s Innovation Project in Hunan

Province (No.: CX2011B053). “
“We read with great interest the article by Kozlitina et al.,1 who found no causal relationship between see more apolipoprotein C3 (APOC3) variants and hepatic triglyceride contents in middle-aged men and women. These results are not in accordance with a recent publication by Petersen et al.,2 who demonstrated that C-482T and T-455C polymorphisms in APOC3 are associated with nonalcoholic fatty liver disease (NAFLD) and insulin resistance. Even though NAFLD is well known to be associated with insulin resistance and diabetes mellitus, the link between certain genetic polymorphisms, NAFLD, and insulin resistance is quite complex. Indeed, the patatin-like phospholipase domain containing 3 (PNPLA3)

polymorphism is strongly associated with NAFLD but not with obesity or insulin resistance.3, 4 In contrast, Petersen et al. found that genetic variants in APOC3 are associated with the liver fat content and insulin resistance; their results, medchemexpress however, have not been confirmed by Kozlitina et al. We recently published a study confirming that in people with type 2 diabetes, the liver fat content was related to the rs738409 PNPLA3 polymorphism.5 In this discordant context, we set out to determine whether the liver fat content, evaluated with proton magnetic resonance spectroscopy, was associated with the rs2854117 APOC3 polymorphism in this population. The study involved 253 patients with type 2 diabetes. One hundred fifty-eight patients (62.4%) had steatosis (hepatic triglyceride content >5.5%).