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ORPHA:443057

Sporadic porphyria cutanea tarda

high confidenceSubtype of disorder

Also known as: Porphyria cutanea tarda type I

Query health: suspect — Only one of 2 strategies returned hits (phrase).

Publications

140

37.1th percentile

Trials

0

Interventional, condition-specific

Researchers

541

Distinct authors in sample

Gene link

—

Readiness

3/6

Stages with a signal

Orphanet entry

Cross-references

Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.

Additional Mondo synonyms (2)

acquired porphyria cutanea tarda · porphyria cutanea tarda type I

Research stages

Trial readiness signals

Where this condition sits on an open-data research pipeline — not how close a treatment is, and not medical advice. Empty stages often mean “not in these databases under this Mondo ID,” not “impossible.”

3/6 stages with a signal

No specific-condition interventional trial, but broader-category trials exist — discuss eligibility with a clinician.

  1. Gene identifiedNot found

    No GenCC disease–gene assertion in this build

  2. LiteraturePresent

    140 matched papers (22 in last 10 years) Source

  3. Phenotype characterisedPresent

    7 HPO annotations (e.g. Hepatic fibrosis; Addictive alcohol use; Porphyrinuria) Source

  4. Animal modelNot found

    No Alliance genotype “model of” associations via Monarch for these Mondo IDs

  5. Orphan designationNot found

    No FDA or EMA orphan-drug designation matched this disease via UMLS or preferred name Source

  6. Interventional trialPartial

    None under the specific name; 4 for broader category porphyria cutanea tarda

Biology

Genes and phenotypes

Gene–disease validity from GenCC, plus phenotypes and animal models joined from Monarch Initiative via Mondo ID — not a clinical diagnosis aid.

Do we know what causes it?

Not yet — the cause hasn't been pinned down in GenCC.

No strong gene–disease assertion joined for this Orphanet entity.

Phenotypes (Monarch / HPO)

7

Associated phenotypes · MONDO:0008295

  • Hepatic fibrosis
  • Addictive alcohol use
  • Porphyrinuria
  • Hypertrichosis
  • Hyperpigmentation of the skin

Showing 5 of 7 — open Monarch for the full list.

Animal models (Monarch / Alliance)

None returned for this Mondo ID. Empty here is not proof that no model organism work exists under another name or gene.

Monarch fetch 2026-07-29

Therapies

Designations, candidates, and chemicals

FDA OOPD and EMA orphan designations, Open Targets clinical candidates, and CTD chemical associations via MyDisease.info. These never change the interventional-trial headline.

Orphan designation (FDA · EMA)

No designation matched this disease via UMLS or preferred name on the FDA OOPD mirror or EMA orphan register. Absence here is not proof that none exists under another wording.

Open Targets candidates

No drugs or clinical candidates returned for this Mondo ID on Open Targets.

CTD chemicals (MyDisease.info)

No CTD chemical associations returned for this Mondo ID.

Literature

Is anyone studying this?

140

140 papers have ever been published on this condition (under this name). For scale, breast cancer has over 700,000. Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=3967) is 59.

140 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 59 (publications denominator n=3967).

22 in the last 10 years · high confidence · 37.1th percentile (publications denominator)

Phrase hits: 140 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

541

Distinct author names in 140 sampled papers — named people below.

Who's working on it?

No interventional trial matched this name; these authors publish on it in the sampled literature — a practical starting point for contact.

  1. 01
    Kushner JP8 papers · 2009
    Papers in Europe PMC
  2. 02
    Edwards CQ7 papers · 2016

    Department of Medicine, Intermountain Medical Center and University of Utah, Salt Lake City, UT, USA. Electronic address: corwin.edwards@imail.org.

    Papers in Europe PMC
  3. 03
    Elder GH7 papers · 2000
    Papers in Europe PMC
  4. 04
    Smith AG5 papers · 2026

    MRC Toxicology Unit, Carshalton, Surrey, U.K.

    Papers in Europe PMC
  5. 05
    Griffen LM4 papers · 1989
    Papers in Europe PMC
  6. 06
    Herrero C4 papers · 2010
    Papers in Europe PMC
  7. 07
    Puy H4 papers · 2018

    Centre Francais des Porphyries, Hôpital Louis Mourier, Assistance Publique-Hôpitaux de Paris, Colombes, France.

    Papers in Europe PMC
  8. 08
    Roberts AG4 papers · 2000

    Department of Medical Biochemistry, University of Wales College of Medicine, Cardiff.

    Papers in Europe PMC
  9. 09
    Skolnick MH4 papers · 1989
    Papers in Europe PMC
  10. 10
    Barton JC3 papers · 2020

    Southern Iron Disorders Center, Birmingham, AL, USA and Department of Medicine; University of Alabama at Birmingham, Birmingham, AL, USA. Electronic address: ironmd@isp.com.

    Papers in Europe PMC

Clinical research

Is a treatment being tested?

0

interventional trials for this specific condition

No interventional trial testing a treatment matched this specific condition name on ClinicalTrials.gov (observational studies and pan-disease registries are listed separately when present). 4 trials are registered for porphyria cutanea tarda, the broader category — shown separately because they may or may not enrol this specific subtype.

Data as of 11 September 2026 · last trial check 11 September 2026

No matched interventional trials. This is true for 77.2% of diseases in the trials denominator (5501 of 7126). Here are the researchers publishing on it.

high confidence · 38.6th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

No interventional trial testing a treatment was found for this specific condition name on ClinicalTrials.gov.

4 interventional trials matched porphyria cutanea tarda, the broader category — listed below. Those studies are not counted in the condition-specific total.

Broader category: porphyria cutanea tarda

4

Interventional trials for the parent category, exclusive of NCT IDs already counted above. Eligibility for this subtype is not guaranteed.

Worth raising with a clinician. How we count trials.

Other registries (secondary)

Broader net from EU CTIS, ISRCTN, and ICTRP when available — deduped against ClinicalTrials.gov IDs already counted above. Dual-model LLM relevance gates what we keep. These rows are not added to the interventional headline.

raw 0 · after dedupe 0 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 0 · dropped 0 · fetched 2026-07-30

Source notes: ictrp: Error: ICTRP public search unavailable (WHO portal is SPA-only; SOAP needs partnership). Tried: https://apps.who.int/tri

No secondary-registry studies passed dual-model relevance for this condition name (after dedupe).

Where to find support

Condition-specific patient organisations, when Orphanet lists them, are on the disease’s Orphanet page. We also link umbrella groups that support undiagnosed and ultra-rare families.

Orphanet entry for Sporadic porphyria cutanea tarda — check Associations / patient organisations on that page.

India — NPRD

Last verified 2026-07-26

This ORPHAcode is not on our curated NPRD list (direct or Mondo-parent match). That does not decide clinical eligibility; families in India should ask a notified Centre of Excellence about current coverage.

Hand-curated for this project. ORPHAcode mappings are best-effort and may be incomplete or imprecise for umbrella categories. Parent (Mondo) matches mean the policy lists a broader category — confirm eligibility with a Centre of Excellence. Financial entitlements summarised from public policy statements and may change. This is not official government guidance.

How we counted this

Europe PMC query (preferred label + any corrected label + Orphanet and Mondo exact synonyms, stoplisted; unioned with resolved MeSH labels when available). UMLS / OMIM / NCIT cross-references are stored on the overview but are not added to the query string.

"Sporadic porphyria cutanea tarda" OR "Porphyria cutanea tarda type I" OR "acquired porphyria cutanea tarda"

Run this search on Europe PMC

MeSH descriptor terms unioned into the query: Porphyria Cutanea Tarda, Type I

ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):

"Sporadic porphyria cutanea tarda" OR "Porphyria cutanea tarda type I" OR "acquired porphyria cutanea tarda" OR "Porphyria Cutanea Tarda, Type I"

Study-type breakdown: 0 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.

Parent-category trials query:

"porphyria cutanea tarda"

Query health: suspect — strategies attempted: phrase, mesh; with hits: phrase

Run this search on ClinicalTrials.gov

Confidence reasoning

  • Preferred label is multi-word and distinctive
  • No synonyms dropped by stoplist
  • No label/synonym collisions with other diseases in this corpus

Ingested 2026-07-27T16:23:34.240Z