- Positive for one or more of the autoantibodies typically associated with T1DM: antibody to glutamic acid decarboxylase (anti‑GAD); antibody to protein tyrosine phosphatase-like protein (anti‑IA‑2); zinc transporter autoantibodies (ZNT8); insulin autoantibodies (IAA). A subject who is positive for insulin autoantibodies (IAA) and negative for the other autoantibodies will only be eligible if the subject has used insulin for less than 7 days total.