(20) studied 11 suspected MODY patients and identified five heterozygous pathogenic variants in four patients {GCK p.Arg191Trp, HNF1A c.710A>G, adenosine triphosphate (ATP)-binding cassette, sub-family, member 8 (ABCC8) [(c.2376delC and c.4608+4A>G found at compound heterozygous state) and c.4606G>A]}. The gene discussed is GCK; the disease is MODY.