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.
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.
Peak C-peptide < 200 pmol/L;
Gestational diabetes, monogenic diabetes (neonatal diabetes, MODY), exocrine pancreatic diseases (cystic fibrosis), diabetes caused by drugs or chemicals;
Those who have been under long-term treatment with hormones or immunosuppressants;
Pregnant or lactating women;