HLA Demographics Study in Adults With Type 1 Diabetes

Who May Qualify: 1. Male and female participants aged ≥ 18 to ≤ 45 years, with type 1 DM meeting American Diabetes Association criteria at diagnosis: 1. Fasting glucose ≥ 126 mg/dL (7.0 mmol/L), or 2. 2-hour oral glucose tolerance test plasma glucose ≥ 200 mg/dL (11.0 mmol/L), or 3. Hemoglobin A1c ≥ 6.5%, or 4. Random plasma glucose ≥ 200 mg/dL (11.1 mmol/L) (with documented classic hyperglycemia symptoms or hyperglycemic crisis). 2. Date of T1D diagnosis within 2 months of the study visit. 3. Able and willing to provide written, willing to sign a consent form as approved by the institutional review board (IRB). Participants must be able to consent directly; no other person or guardian may consent for them in this study. Who Should NOT Join This Trial: 1. Participant is an employee of, or an immediate family member of an employee, of the Sponsor, study site, or of a contractor/vendor who is involved in direct study conduct for this protocol. 2. Participant is unwilling or unable to comply with the study visit assessments. Always talk to your doctor about whether this trial is right for you.