The presence of NAFLD not only increases the risk of T2DM, but also accelerates the process of various diabetes-related organ damage in patients with T2DM. Similarly, T2DM also increases the risk of NAFLD. However, in patients with T2DM, there are few reports on the correlation between ultrasound attenuation parameters for non-invasive assessment of liver fat content and insulin resistance. In addition, T2DM may be the most important predictor of adverse clinical outcomes in NAFLD patients. T2DM is an important predictor of NAFLD patients progressing to compensated advanced chronic liver disease (cACLD), and even cirrhotic portal hypertension and other end-stage liver diseases.~In February 2020, international experts suggested NAFLD to be renamed metabolic associated fatty liver disease (MAFLD). In April of the same year, the Journal of Hepatology released a new definition and diagnosis of MAFLD with the criteria based on histological (liver biopsy), imaging, or blood biomarker indicating the presence of hepatic fat accumulation (hepatocyte steatosis), in combination with one of the following 3 conditions: overweight/obesity, type 2 diabetes and metabolic dysfunction. The new diagnostic criteria are based on underlying metabolic abnormalities and recognize that MAFLD often coexists with other diseases.~Therefore, this study aims to investigate the prevalence and clinical characteristics of MAFLD in patients with T2DM, as well as the correlation between UAP and insulin resistance in T2DM. Patients will be followed up to 5 years for the clinical outcomes at 3months, 6 months, 12 months, 36 months, 48 months and 60 months respectively and the risk factors affecting the clinical outcomes of patients with T2DM will be analyzed.
In 2019, the number of patients with diabetes was about 463 million in the world, accounting for 8.3% of the total population, and it is expected to rise to 578 million (9.2%) by 2030 and 700 million (9.6%) by 2045. According to the WHO diagnostic criteria, the prevalence of diabetes among adults in China from 2015 to 2017 was 11.2%, of which over 90% were type 2 diabetes mellitus (T2DM). The global prevalence of non-alcoholic fatty liver disease (NAFLD) is also very high, which was approximately 25% in 2016. The prevalence of NAFLD may continue to rise. NAFLD is often accompanied by clinical manifestations of metabolic syndrome, such as obesity, T2DM, hyperlipidemia and hypertension.