UROS and porphyria: Of the 4 patients with EP all had genetic and biochemical test confirmation with 1 patient exhibiting Congenital Erythropoietic Porphyria due to recessive variant on UROS gene, 1 had Erythropoietic Protoporphyria due to biallelic variants on FECH gene and 2 with Porphyria Cutanea Tarda due to UROD variants.