Univariate logistic regression identified the following as being associated with improved glycemic control (HbA1c <7%): age ≤40 years, BMI ≤25 kg/m2, absence of microvascular complication, following a healthy diet and exercise plan, self-monitoring of glucose, self-adjusting insulin, diabetes education, lower total daily insulin dose, less diabetes related hospitalization for past 12 months, and care by specialist. The gene discussed is INS; the disease is diabetes mellitus.