In patients with T1D HbA1c decreased by −1.7 ± 6.1 mmol/mol Hb (60.5 mmol/mol Hb pre-lockdown to 58.8 mmol/mol Hb during the lockdown) (Figure 2A; p = 0.006). The gene discussed is GSTM1; the disease is type 1 diabetes mellitus.