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ORPHA:79401

PLEC-related intermediate epidermolysis bullosa simplex without extracutaneous involvement

high confidenceDisorder

Also known as: PLEC-related intermediate EBS without extracutaneous involvement

Publications

11

26.3th percentile

Trials

0

Interventional, condition-specific

Researchers

75

Distinct authors in sample

Gene link

PLEC

Strong

Readiness

3/6

Stages with a signal

Clinical definition (Orphanet)

A rare, inherited, epidermolysis bullosa simplex characterized by primarily acral blistering with onset typically at birth. Patients have easy bruisability, hemorrhagic blistering, and onychogryphosis.

How rare: <1 / 1 000 000 — fewer than one in a million. In a city the size of Kolkata, that might mean on the order of fifteen people.

Orphanet entry

Cross-references

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

Additional Mondo synonyms (3)

EBSOG · epidermolysis bullosa simplex 5A, Ogna type · epidermolysis bullosa simplex, Ogna type

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 identifiedPresent

    Strong — PLEC

  2. LiteraturePresent

    11 matched papers (9 in last 10 years) Source

  3. Phenotype characterisedNot checked

    Not yet enriched from Monarch / HPO

  4. Animal modelNot checked

    Not yet enriched from Monarch / Alliance

  5. Orphan designationNot checked

    FDA/EMA orphan-drug designation not enriched yet

  6. Interventional trialPartial

    None under the specific name; 17 for broader category epidermolysis bullosa simplex

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?

Yes — we know a specific gene responsible (PLEC).

GenCC classification: Strong.

Phenotypes (Monarch / HPO)

Not enriched in this build — Monarch phenotype joins were not run for this record.

Animal models (Monarch / Alliance)

Not enriched in this build.

Literature

Is anyone studying this?

11

11 papers have ever been indexed 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=5449) is 41.

11 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 41 (publications denominator n=5449).

9 in the last 10 years · high confidence · 26.3th percentile (publications denominator)

Phrase hits: 11 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

75

Distinct author names in 11 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
    Li L2 papers · 2023

    BGI-Wuhan Clinical Laboratory, BGI-Shenzhen, 430074, Wuhan, China.

    Papers in Europe PMC
  2. 02
    Liu Y2 papers · 2026

    Department of Genetics, Jiangxi Maternal and Child Health Hospital, 330006, Nanchang, China.

    Papers in Europe PMC
  3. 03
    Zhang W2 papers · 2024

    BGI Genomics, BGI-Shenzhen, 518083, Shenzhen, China.

    Papers in Europe PMC
  4. 04
    Arold ST1 paper · 2024

    Biological and Environmental Science and Engineering Division, Computational Bioscience Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.

    Papers in Europe PMC
  5. 05
    Bi J1 paper · 2024

    Department of Plastic Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, People's Republic of China.

    Papers in Europe PMC
  6. 06
    Biswal A1 paper · 2025

    Department of Dermatology, Institute of Medical Science and SUM Hospital, Kalinga Nagar, Bhubaneswar, Odisha, India.

    Papers in Europe PMC
  7. 07
    Cao Y1 paper · 2024

    Center of Prenatal Diagnosis, The Affiliated Chenzhou Hospital, Hengyang Medical School, University of South China, Chenzhou, 423000, China.

    Papers in Europe PMC
  8. 08
    Chen D1 paper · 2024

    Center of Prenatal Diagnosis, The Affiliated Chenzhou Hospital, Hengyang Medical School, University of South China, Chenzhou, 423000, China.

    Papers in Europe PMC
  9. 09
    Cox TC1 paper · 2024

    Departments of Oral & Craniofacial Sciences, School of Dentistry, and Pediatrics, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA.

    Papers in Europe PMC
  10. 10
    Daroontum T1 paper · 2024

    Department of Pathology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.

    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. 1 observational study did — shown below because natural-history and cohort work can be an important step toward a trial. 17 trials are registered for epidermolysis bullosa simplex, the broader category — shown separately because they may or may not enrol this specific subtype.

Data as of 27 July 2026

No matched interventional trials. This is true for 73% of diseases in the trials denominator (5114 of 7003). Here are the researchers publishing on it.

high confidence · 36.5th 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.

17 interventional trials matched epidermolysis bullosa simplex, the broader category — listed below. Those studies are not counted in the condition-specific total.

Broader category: epidermolysis bullosa simplex

17

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

  • NCT01403402·RECRUITING·Congenital Muscle Disease Study of Patient and Family Reported Medical Information

    Conditions: Congenital Muscular Dystrophy With ITGA7 (Integrin Alpha-7) Deficiency · Alpha-Dystroglycanopathy (Congenital Muscular Dystrophy and Abnormal Glycosylation of Dystroglycan With Severe Epilepsy) · Alpha-Dystroglycanopathy (Congenital Muscular Dystrophy With Fatty Liver and Infantile-onset Cataract Caused by TRAPPC11 Mutations) · Alpha-Dystroglycanopathy (Congenital Muscular Dystrophy With Hypoglycosylation of Dystroglycan)·Matched via recall expansion

Open the complete matched search on ClinicalTrials.gov

Where to find support

We do not yet link condition-specific patient organisations. These umbrella groups support undiagnosed and ultra-rare families:

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.

"PLEC-related intermediate epidermolysis bullosa simplex without extracutaneous involvement" OR "PLEC-related intermediate EBS without extracutaneous involvement" OR "EBSOG" OR "epidermolysis bullosa simplex 5A, Ogna type" OR "epidermolysis bullosa simplex, Ogna type"

Run this search on Europe PMC

MeSH descriptor terms unioned into the query: Epidermolysis bullosa simplex, Ogna type

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

"PLEC-related intermediate epidermolysis bullosa simplex without extracutaneous involvement" OR "PLEC-related intermediate EBS without extracutaneous involvement" OR "EBSOG" OR "epidermolysis bullosa simplex 5A, Ogna type" OR "epidermolysis bullosa simplex, Ogna type" OR "PLEC"

Recall-expansion terms: PLEC

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

Parent-category trials query:

"epidermolysis bullosa simplex"

Query health: ok — strategies attempted: phrase, mesh, recall-expansion; with hits: phrase, recall-expansion

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 2026-07-27T02:21:44.861Z