Molecular analysis through direct DNA sequencing of the G6PD gene in 102 Thai pediatric patients with G6PD deficiency revealed 12 missense mutations, namely G6PD Viangchan (871G>A), G6PD Canton (1376G>T), G6PD Kaiping (1388G>A), G6PD Mahidol (487G>A), G6PD Quing Yan (392G>T), G6PD Coimbra (592C>T), G6PD Union (1360C>T), G6PD Songklanagarind (196T>A), G6PD Valladolid (406C>T), G6PD Aures (143C>T), G6PD Chinese-5 (1024C>T), and G6PD Mediterranean (563C>T) [94]. This evidence concerns the gene G6PD and G6PD deficiency.