G6PD and G6PD deficiency: However, data are still very limited concerning DAA use in patients affected by glucose-6-phosphate dehydrogenase (G6PD) deficiency (d), also known as favism, (formally hemolytic anemia, G6PD-deficient: OMIM #300908), an X-linked genetic disorder caused by mutations in the G6PD gene which can result in acute hemolytic anemia in the presence of increased reactive oxygen species production.