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Hereditary photodermatosis
MONDO:0015951Hereditary photodermatoses are a spectrum of rare photosensitive disorders that are often caused by genetic deficiency or malfunction of various components of the DNA repair pathway. This results clinically in extreme photosensitivity, with many syndromes exhibiting an increased risk of cutaneous malignancies.
Also known as: photogenodermatosis, photogénodermatose, genetic photosensitivity, genetic skin photosensitivity
31 clinical trials for this condition and its sub-types, 0 tagged with Hereditary photodermatosis itself.
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Sub-types of Hereditary photodermatosis
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Inherited porphyria 0 trials · 24 incl. sub-types
9 sub-types
- Erythropoietic protoporphyria 15 trials Sub-types →
- CPOX-related hereditary coproporphyria 0 trials · 5 incl. sub-types Sub-types →
- HMBS-related hepatic porphyria 0 trials · 5 incl. sub-types Sub-types →
- PPOX-related hepatic porphyria 0 trials · 2 incl. sub-types Sub-types →
- Cutaneous porphyria 2 trials
- UROD-related inherited porphyria 0 trials · 1 incl. sub-types Sub-types →
- Chester porphyria 0 trials
- Erythropoietic uroporphyria associated with myeloid malignancy 0 trials
- Porphyria due to ALA dehydratase deficiency 0 trials
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Xeroderma pigmentosum 4 trials · 6 incl. sub-types
10 sub-types
- Xeroderma pigmentosum group F 1 trial
- Xeroderma pigmentosum variant type 1 trial
- Xeroderma pigmentosum group A 0 trials
- Xeroderma pigmentosum group B 0 trials
- Xeroderma pigmentosum group C 0 trials
- Xeroderma pigmentosum group D 0 trials
- Xeroderma pigmentosum group E 0 trials
- Xeroderma pigmentosum group G 0 trials
- Xeroderma pigmentosum, autosomal dominant, mild 0 trials
- Xeroderma pigmentosum, complementation group J 0 trials
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Xeroderma pigmentosum-Cockayne syndrome complex 1 trial · 2 incl. sub-types
6 sub-types
- Xeroderma pigmentosum group F 1 trial
- Xeroderma pigmentosum group B 0 trials
- Xeroderma pigmentosum group D 0 trials
- Xeroderma pigmentosum group G 0 trials
- Xeroderma pigmentosum, type F/Cockayne syndrome 0 trials
- Xeroderma pigmentosum, type G/Cockayne syndrome 0 trials
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Rothmund-Thomson syndrome 1 trial
4 sub-types
- Rothmund-Thomson syndrome type 1 0 trials
- Rothmund-Thomson syndrome type 2 0 trials
- Rothmund-Thomson syndrome type 3 0 trials
- Rothmund-Thomson syndrome type 4 0 trials
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Bloom syndrome 0 trials
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UV-sensitive syndrome 0 trials
3 sub-types
- UV-sensitive syndrome 1 0 trials
- UV-sensitive syndrome 2 0 trials
- UV-sensitive syndrome 3 0 trials
Most studied deeper sub-types
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Gene therapy offers hope for babies with 'Bubble Boy' disease
Cure Recruiting nowThis study tests a new gene therapy for children with a severe immune disorder called Artemis-SCID, where the body cannot fight infections. Doctors take the child's own blood stem cells, fix the faulty gene in a lab, and put the corrected cells back. The goal is to rebuild a work…
Phase 1/2 • Sponsor: Assistance Publique - Hôpitaux de Paris • Aim: Cure
Last updated Jun 27, 2026 12:00 UTC
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A pill that could let people with rare sunlight disorder step outside without pain
Disease control Recruiting nowResearchers are testing an oral drug called PORT-77 in people with erythropoietic protoporphyria (EPP) and X-linked protoporphyria (XLP), rare conditions that cause severe pain after sunlight exposure. The trial enrolls about 225 adults and adolescents aged 12 and older. It compa…
Phase 2/3 • Sponsor: Portal Therapeutics, Inc. • Aim: Disease control
Last updated Sep 17, 2026 00:00 UTC
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New hope for rare sun allergy: bitopertin offered to patients with no options
Disease control Expanded accessThis expanded access program provides bitopertin (DISC-1459) to patients aged 12 and older with erythropoietic protoporphyria (EPP) or X-linked protoporphyria (XLP) who have no satisfactory treatment options in the US. The goal is to offer access and gather safety information. Pa…
Sponsor: Disc Medicine, Inc • Aim: Disease control
Last updated Aug 05, 2026 00:00 UTC
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Could a Carb-Heavy diet tame a rare blood disorder?
Disease control Recruiting nowThis study is testing whether eating a diet rich in carbohydrates (60-65% of daily calories) can help people with acute intermittent porphyria (AIP), a rare genetic disorder that causes severe attacks of pain and other symptoms. Fifty adults with AIP will try two different diet p…
Sponsor: Nordlandssykehuset HF • Aim: Disease control
Last updated Jun 27, 2026 12:01 UTC
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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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Hunting the hidden genes that decide who gets porphyria attacks
Knowledge-focused Recruiting nowAcute intermittent porphyria (AIP) is an inherited disorder that can cause sudden, severe attacks, but not everyone who carries the gene gets sick. Researchers at Mount Sinai are collecting blood, saliva, and urine samples from about 150 people in AIP families, including affected…
Sponsor: Icahn School of Medicine at Mount Sinai • Aim: Knowledge-focused
Last updated Sep 12, 2026 00:00 UTC
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New patient registry aims to unlock secrets of rare liver disease
Knowledge-focused Recruiting nowThis study is a global registry that will follow about 150 people with acute hepatic porphyria (AHP) over time. Researchers will collect information on how the disease progresses, how it is managed in real-world settings, and the safety and effectiveness of approved treatments li…
Sponsor: Alnylam Pharmaceuticals • Aim: Knowledge-focused
Last updated Sep 10, 2026 00:00 UTC
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Hunt for hidden cancer genes: families needed to unlock hereditary secrets
Knowledge-focused Recruiting nowThis study aims to discover new genes that may cause certain cancers to run in families. Researchers will collect blood samples and health information from 1,500 people in families where multiple members have had cancer, especially childhood cancers. The goal is to build a regist…
Sponsor: St. Jude Children's Research Hospital • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:00 UTC
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Scientists track rare DNA repair diseases to learn how they progress
Knowledge-focused Recruiting nowThis study is for people with rare DNA repair disorders like Cockayne syndrome, xeroderma pigmentosum, or trichothiodystrophy. Researchers will watch how symptoms like movement and balance change over time. No treatments are given—the goal is to better understand these conditions…
Sponsor: University of Minnesota • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:37 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
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New study aims to unlock mysteries of rare sun allergy disorders
Knowledge-focused Recruiting nowThis observational study is gathering information on how erythropoietic protoporphyria (EPP) and X-linked porphyria (XLP) affect people aged 12 and older. Over 6 months, researchers will track symptoms, light exposure, and blood levels of protoporphyrin IX (PPIX) in 50 participan…
Sponsor: Portal Therapeutics, Inc. • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:29 UTC
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5G Radiation's hidden impact on skin revealed in new trial
Knowledge-focused Recruiting nowThis study looks at how high-frequency 5G waves (27.5 GHz) affect the skin. Researchers will expose healthy volunteers and people with certain skin conditions to these waves and analyze skin cell changes using advanced techniques. The goal is to understand any biological effects,…
Sponsor: Prof. Olivier Gaide, MD-PhD • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:01 UTC