Hereditary coproporhyria (HCP)

An acute hepatic porphyria with milder similar symptoms to acute intermittent porphyria, but with skin photosensitivity.

Patients have approximately 50% deficiency of coproporhyrinogen oxidase activity inherited associated an autosomal process.

Patients excrete excessive ALA, PBG and in the urine coproporphyrin and coproporphyrin in the stool.

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