Genetic Risk Score of Type 1 Diabetes Mellitus for Progression to Insulin in Diabetic Patients Lack of Predictive Value: a Multicenter Nested Case-control Study
The goal of this observational study is to evaluate the predictive value of the genetic risk score for type 1 diabetes in the progression to insulin deficiency in diabetic patients. The main question it aims to answer is: 1. To investigate the predictive efficacy of the genetic risk score for T1DM in determining whether diabetic patients will progress to insulin deficiency; 2. To compare the differences in genetic characteristics between the insulin-deficient cohort and the non-insulin-deficient cohort. This study is a nested case-control study, in which a case group and a control group are set up for the collection of observational indicators. Case group: Diabetic patients who progressed to insulin deficiency and those who progressed to severe insulin deficiency. Control group: Patients who did not progress to insulin deficiency. The study period is 3 years.
• Gender is not restricted.
• Age ranges from 14 to 50 years old.
• Diagnosis of diabetes within \< 1 year:
‣ If there are diabetes symptoms and meet any of the following criteria:① Plasma glucose at any time ≥ 11.1 mmol/L (200 mg/dL), or② Fasting plasma glucose ≥ 7.0 mmol/L (126 mg/dL), or③ Plasma glucose 2 hours after OGTT/post - meal ≥ 11.1 mmol/L (200 mg/dL), or④ HbA1c ≥ 6.5%.
⁃ If there are no diabetes symptoms, another test on a different day is required for diagnosis.
• Newly - diagnosed diabetes patients whose type diagnosis is considered unclear clinically.