The potential link between inherited G6PD deficiency, oxidative stress, and vitamin D deficiency and the racial inequities in mortality associated with COVID 19 ScienceDirect The Multiple Roles of Glucose 6 Phosphate Dehydrogenase in Tumorigenesis and Cancer Chemoresistance G6PD Deficiency Glucose 6 phosphate dehydrogenase deficiency X linked recessive disorder Leads to low NADPH, impairing glutathione regeneration RBCs are vulnerable to oxidative damage Pathophysiology: In G6PD deficiency: No Molecular Medicine Reports