The enzyme deficient in erythropoietic porphyria is:

- Erythropoietic protoporphyria is due to deficiency of enzyme ferrochelataseQ.- All porphyrias are autosomal dominant (AD) except congenital erythropoietic porphyria (autosomal recessive, AR), ALA dehydratase (porphobilinogen) deficiency (AR) and X-linked protoporphyria (X-linked).