Further, when taking consanguinity into account, 50% (7/14 individuals with NDM and neurological features who were born to consanguineous parents) had a homozygous disease‐causing NARS2 variant, highlighting the need to test for this gene in individuals with NDM, especially if born to related parents and when neurological features are present. The gene discussed is NARS2; the disease is neonatal diabetes mellitus.