Cytochrome P450 oxidoreductase deficiency

Cytochrome P450 oxidoreductase deficiency (PORD) is a rare disease and inborn error of metabolism caused by deficiency of cytochrome P450 oxidoreductase (POR). POR is a 2-flavin protein that is responsible for the transfer of electrons from NADPH to all 50 microsomal cytochrome P450 (CYP450) enzymes.

Source: Wikipedia — Cytochrome P450 oxidoreductase deficiency (CC BY-SA 4.0)