Unknown All of the following types of porphyria are autosomal dominant except: A acute intermittent porphyria B Porphyria cutanea tarda C CEP (Congenital erythropoetic porphyria) D Hereditary coproporphyria 💡 Explanation All of the following types of porphyria are autosomal dominant except: ✓ Correct Answer: C. CEP (Congenital erythropoetic porphyria)