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Cutaneous porphyria
MONDO:0009902An erythropoietic porphyria (massive accumulation of photoreactive porphyrins in the bone marrow erythroid cells and circulating erythrocytes, resulting in cutaneous photosensitivity) caused by biallelic variants in UROS (in an autosomal recessive inheritance pattern). Cases where biallelic variants reduce WT enzyme activity to <5% are characterized by photosensitivity, hemolytic anemia (often in utero), erythrodontia, splenomegaly, cutaneous blistering, scarring and disfigurement. Other cases where biallelic variants do not reduce enzyme activity as severely (5-12% of WT activity) have a later onset of photosensitivity and milder symptoms.
Also known as: CEP, Congenital Erythropoietic Porphyria, Günther disease, UROS-related erythropoietic porphyria, cutaneous porphyria, erythropoietic porphyria, Cep, Gunther disease
11 clinical trials for this condition and its sub-types, 2 tagged with Cutaneous porphyria itself.
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Experimental pill aims to ease sun sensitivity in rare blood disorder
Disease control Recruiting nowThis early-phase trial tests an oral drug called ATL-001 (ciclopirox) in 6 adults with congenital erythropoietic porphyria (CEP), a rare condition that causes severe skin damage from sunlight. The study measures whether the drug reduces skin lesions, fatigue, and other symptoms o…
Phase 1/2 • Sponsor: Atlas Molecular Pharma • Aim: Disease control
Last updated Jun 27, 2026 12:00 UTC
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Scientists launch Largest-Ever porphyria watch: 1,500 patients tracked for clues
Knowledge-focused Recruiting nowThis study follows 1,500 people with porphyria over many years to learn how the disease progresses, what symptoms appear, and how it affects pregnancy and lifespan. Researchers will collect medical records and lab results to create a clearer picture of the condition. No new treat…
Sponsor: The American Porphyrias Expert Collaborative • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:33 UTC