Baseline demographic and clinical characteristics of 25 adults with type 2 diabetes enrolled in the GEMINI-T2Da study, a 24-week pre-post intervention study conducted at the Singapore General Hospital from September 2020 to May 2022. All participants were on twice-daily premixed insulin and met inclusion criteria for HbA1cb level (7.5%‐9.9%), BMI (≤40 kg/m2), and experience with self-monitoring of blood glucose. This evidence concerns the gene INS and type 2 diabetes mellitus.