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ORPHA:79481

Pemphigus foliaceus

high confidenceDisorder

Publications

3,508

89.6th percentile

Trials

6

Interventional, condition-specific

Researchers

962

Distinct authors in sample

Gene link

—

Readiness

3/6

Stages with a signal

Clinical definition (Orphanet)

A rare superficial pemphigus disease characterized by multiple, pruritic, scaly, crusted cutaneous erosions, with flaky circumscribed patches, localized mostly on the face, scalp, trunk and extremities, often presenting an erythematous base. Mucosal involvement is rarely observed.

How rare: 1-9 / 100 000 — about one to nine people per hundred thousand.

Orphanet entry

Cross-references

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

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

An interventional trial matched this condition name on ClinicalTrials.gov — see trials below.

  1. Gene identifiedNot found

    No GenCC disease–gene assertion in this build

  2. LiteraturePresent

    3,508 matched papers (1,594 in last 10 years) Source

  3. Phenotype characterisedPresent

    20 HPO annotations (e.g. Autoimmunity; Abnormal blistering of the skin; Abnormal oral mucosa morphology) 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 trialPresent

    6 matched on ClinicalTrials.gov

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)

20

Associated phenotypes · MONDO:0019324

  • Autoimmunity
  • Abnormal blistering of the skin
  • Abnormal oral mucosa morphology
  • Neoplasm of the skin
  • Crusting erythematous dermatitis

Showing 5 of 20 — 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

3

Drugs / clinical candidates · MONDO_0019324

CTD chemicals (MyDisease.info)

No CTD chemical associations returned for this Mondo ID.

Literature

Is anyone studying this?

3,508

3,508 papers have been published on this condition. That is a real research literature — still far smaller than common diseases (breast cancer: over 700,000 papers). Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=3967) is 59.

3,508 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).

1,594 in the last 10 years · high confidence · 89.6th percentile (publications denominator)

Phrase hits: 3,508 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

962

Distinct author names in 200 sampled papers — named people below.

Who's working on it?

People publishing on this condition (sampled Europe PMC records). Affiliation is the most recent found in that sample.

  1. 01
    Hashimoto T6 papers · 2026

    Department of Dermatology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan.

    Papers in Europe PMC
  2. 02
    Schmidt E6 papers · 2026

    Lübeck Institute of Experimental Dermatology, University of Lübeck, 23562 Lübeck, Germany.

    Papers in Europe PMC
  3. 03
    Howard MS5 papers · 2025

    Georgia Dermatopathology Associates, Atlanta, GA, USA.

    Papers in Europe PMC
  4. 04
    Joly P5 papers · 2026

    Department of Dermatology, Rouen University Hospital, Normandie University and INSERM U1234, European Reference Network for Rare Skin Diseases (ERN SKIN), Centre de Référence National des Maladies Bulleuses Auto-Immunes, Rouen, France.

    Papers in Europe PMC
  5. 05
    Abreu Velez AM4 papers · 2025

    Georgia Dermatopathology Associates, Atlanta, GA, USA.

    Papers in Europe PMC
  6. 06
    Dmochowski M4 papers · 2026

    Autoimmune Blistering Dermatoses Section, Department of Dermatology, Poznan University of Medical Sciences, 61701 Poznan, Poland.

    Papers in Europe PMC
  7. 07
    Tedbirt B4 papers · 2026

    Department of Dermatology, Rouen University Hospital, Normandie University and INSERM U1234, European Reference Network for Rare Skin Diseases (ERN SKIN), Centre de Référence National des Maladies Bulleuses Auto-Immunes, Rouen, France.

    Papers in Europe PMC
  8. 08
    Abida O3 papers · 2026

    "Autoimmunity, Cancer and Immunogenetics" research laboratory (LR18SP12), Immunology Department, Habib Bourguiba Hospital, University of Sfax, Sfax, 3029, Tunisia. olfaabida@yahoo.fr.

    Papers in Europe PMC
  9. 09
    Bahloul E3 papers · 2026

    Dermatology Department, Hedi Chaker Hospital, University of Sfax, Sfax, Tunisia.

    Papers in Europe PMC
  10. 10
    Bizikova P3 papers · 2025

    College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA.

    Papers in Europe PMC

Clinical research

Is a treatment being tested?

6

interventional trials for this specific condition

6 interventional trials matched this specific condition name; none in our sample are currently recruiting. 49 trials are registered for pemphigus, the broader category — shown separately because they may or may not enrol this specific subtype.

Data as of 11 September 2026

6 interventional trials — more than 77.2% of diseases in the trials denominator have none at all (5501 of 7126; this disease is at the 90.1th percentile).

high confidence · 90.1th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

6 interventional trials matched after quoted-phrase search and title/condition post-filter.

No currently recruiting studies in the matched set. Open the same search on ClinicalTrials.gov.

Broader category: pemphigus

49

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.

Recruiting under the broader category

Observational and natural-history studies

1 observational study matches this condition. These do not test a treatment and are not counted in the interventional-trial headline, but they are genuine research: natural-history work often defines the endpoints needed for a future rare-disease trial, and families may be able to enroll.

Recruiting or not-yet-recruiting

Open the complete matched search on ClinicalTrials.gov

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 2 · after dedupe 2 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 2 · 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).

Uncertain / not reviewed (2)

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 Pemphigus foliaceus — 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.

"Pemphigus foliaceus"

Run this search on Europe PMC

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

"Pemphigus foliaceus"

Interventional trials matched via: phrase (mesh = registered under a MeSH descriptor no name phrase would catch; recall-expansion = gene / selected parent terms used only for trials).

Study-type breakdown: 6 interventional · 1 observational · 0 expanded access. Only interventional studies enter the trial headline.

Parent-category trials query:

"pemphigus"

Query health: ok — strategies attempted: phrase; 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 2026-07-27T02:28:45.699Z