Holstein et al. [30] investigated the impact of the KCNJ11 gene Glu23Lys polymorphism on impaired hypoglycemia awareness and found that while diabetes duration, C-peptide levels, and glycated hemoglobin (HbA1c) were identified as risk factors for hypoglycemia cognition impairment, this genetic polymorphism showed no significant influence regardless of adjustments for age, disease duration, or metabolic parameters. Here, KCNJ11 is linked to diabetes mellitus.