Several mutations including two novel mutations of the glucose-6-phosphatedehydrogenase gene in Polish G6PD deficient subjects with chronic nonspherocytic hemolytic anemia, acute hemolytic anemia, and favism

DNA sequencing revealed seven different glucose-6-phosphate dehydrogenase ( G6PD) mutations in G6PD deficient subjects from 10 Polish families. Among t hem we found two novel mutations: 679C-->T (G6PD Radlowo, class 2) and a 10 06A-->G (G6PD Torun, class 1), Variant G6PD Radlowo was characterized bioch emically, Both novel mutations were analyzed using a model of the tertiary structure of the human enzyme, The main chain of G6PD Torun is different fr om the wild-type G6PD. The remaining mutations identified by us in deficien t Polish patients were: 542A-->T (G6PD Malaga), 1160G-->A (G6PD Beverly Hil ls), 1178G-->A (G6PD Nashville), 1192G-->A (G6PD Puerto Limon), and 1246G-- >A (G6PD Tokyo). Variant Tokyo was found in four families. In one of them f avism was the first clinical sign of G6PD deficiency and chronic nonspheroc ytic hemolytic anemia (CNSHA) was diagnosed later. Variants G6PD Nashville and G6PD Puerto Limon were accompanied by the silent mutation 1311C-->T of the G6PD gene. Hum Mutat 14:477-484, 1999, (C) 1999 Wiley-Liss, Inc.