OATP1B1/1B3 deficiency exacerbates hyperbilirubinemia in erythropoietic protoporphyria
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Erythropoietic protoporphyria (EPP) is caused by loss-of-function mutations in ferrochelatase (FECH), leading to the accumulation of its substrate, protoporphyrin IX (PPIX). PPIX is primarily produced in the bone marrow and transported to the liver for excreti... ...