Sporadic Porphyria Cutanea Tarda, Cutaneous Sarcoidosis, and Compound Heterozygosity of HFE Mutations Cys282Tyr and His63Asp-A Case Report.

Porphyria cutanea tarda (PCT) is caused by inherited or acquired defects of uroporphyrinogen decarboxylase (UROD) in the heme biosynthetic pathway. Altered iron homeostasis via hemochromatosis gene (HFE) mutations is one of many susceptibility factors associated with the sporadic form of PCT. Though sarcoidosis is not commonly associated with PCT, prior reports of hepatic sarcoidosis postulated that hepatic granulomas affect UROD activity by direct interference or immunological mechanisms. Here we describe a case of acquired PCT in the setting of (HFE):c.845G>A (p.Cys282Tyr) and (HFE):c.187C>G (p.His63Asp) compound heterozygosity, hepatic steatosis, and cutaneous sarcoidosis.