Identification of mutation in G6PD gene in Nung ethnic patients with glucose-6-phosphate dehydrogenase deficiency

Abstract

Glucose-6-phosphate dehydrogenase (G6PD) is the key enzyme that initiates the pentose phosphate cycle in glucose metabolism. Physiologically, this pathway is the main source of nicotinamide adenine dinucleotide phosphate (NADPH) for red blood cells. This study aims to identify glucose-6-phosphate dehydrogenase (G6PD) mutations in Nung ethnic patients with G6PD deficiency. 18 pediatric patients of the Nung ethnic group were diagnosed with G6PD enzyme deficiency at the Vietnam National Children’s Hospital and applied PCR and gene sequencing to detect mutations in the G6PD gene. 8 types of mutation were detected in the G6PD gene in which the most common mutation was Kaiping (c.1388G>A) with 44.4%, followed by Canton (c.1376G>T), Viangchan (c.871G>A), Union (c.1360C>T), Gaohe (c.95A>G), Orissa (c.131C>G), and Chinese-5 (c.1024C>T). Silent mutations at the 1311C>T location were found in 3 cases.