Eight men with T1D participated in the study (age, 27.6 ± 11.4 years; weight, 91.8 ± 11.0 kg; BMI, 26.6 ± 2.2 kg m2; HbA1c, 55.1 ± 7.4 mmol/mol) and all were able to complete both sessions without the need for additional insulin correction. The gene discussed is INS; the disease is type 1 diabetes mellitus.