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ORPHA:2892

Pilodental dysplasia-refractive errors syndrome

high confidenceDisorder

Also known as: Euhidrotic ectodermal dysplasia · Kopysc-Barczyk-Krol syndrome

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

Publications

5

8th percentile

Trials

0

Interventional, condition-specific

Researchers

15

Distinct authors in sample

Gene link

—

Readiness

1/6

Stages with a signal

Clinical definition (Orphanet)

Pilodental -refractive errors syndrome is a rare ectodermal syndrome characterized by dysplastic abnormalities of the hair and teeth (including hypodontia, abnormally shaped teeth, scalp hypotrichosis and pili annulati), follicular hyperkeratosis on the trunk and limbs, and hyperopia. Intensified delineation, reticular hyperpigmentation of the nape and astigmatism have also been reported. There have been no further descriptions in the literature since 1985.

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.

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.”

1/6 stages with a signal

Research-stage checklist from open sources (GenCC, literature, Monarch when enriched, ClinicalTrials.gov). Not a prognosis or care recommendation.

  1. Gene identifiedNot found

    No GenCC disease–gene assertion in this build

  2. LiteraturePresent

    5 matched papers (1 in last 10 years) Source

  3. Phenotype characterisedNot found

    No HPO disease–phenotype associations via Monarch for these Mondo IDs

  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 trialNot found

    No matched interventional trial under our ClinicalTrials.gov rules

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)

None returned for this Mondo ID. That often means “not linked under this ID,” not “no clinical features.”

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 2026-07-27

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?

5

5 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=3967) is 59.

5 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 in the last 10 years · high confidence · 8th percentile (publications denominator)

Phrase hits: 5 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

15

Distinct author names in 5 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
    Barczyk K1 paper · 1985
    Papers in Europe PMC
  2. 02
    Fujita T1 paper · 2022

    Department of Otolaryngology-Head and Neck Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.

    Papers in Europe PMC
  3. 03
    Gal A1 paper · 2012

    Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany

    Papers in Europe PMC
  4. 04
    Gaurkar SP1 paper · 2013

    Department of Dermatology, B. J. Medical College and Civil Hospital, Ahmedabad, Gujarat, India.

    Papers in Europe PMC
  5. 05
    Gupta KD1 paper · 2013
    Papers in Europe PMC
  6. 06
    Katsunuma S1 paper · 2022

    Department of Otolaryngology, Hyogo Prefectural Kobe Children's Hospital, Kobe, Japan.

    Papers in Europe PMC
  7. 07
    Kopyść Z1 paper · 1985
    Papers in Europe PMC
  8. 08
    Król E1 paper · 1985
    Papers in Europe PMC
  9. 09
    Kuno S1 paper · 2022

    Department of Biochemistry and Molecular Biology, Division of Molecular and Cellular Biology, Kobe University Graduate School of Medicine, Kobe, Japan.

    Papers in Europe PMC
  10. 10
    Lowe LH1 paper · 1997

    Department of Radiology, Children's Medical Center, Dallas, TX 75235-7794, USA.

    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).

Data as of 9 September 2026 · last trial check 9 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.

See who's working on it — people publishing on this disease are often the practical next contact when no trial is listed.

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 2026-07-27

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 Pilodental dysplasia-refractive errors syndrome — 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.

"Pilodental dysplasia-refractive errors syndrome" OR "Euhidrotic ectodermal dysplasia" OR "Kopysc-Barczyk-Krol syndrome"

Run this search on Europe PMC

MeSH descriptor terms unioned into the query: Euhidrotic ectodermal dysplasia

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

"Pilodental dysplasia-refractive errors syndrome" OR "Euhidrotic ectodermal dysplasia" OR "Kopysc-Barczyk-Krol syndrome"

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

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 2026-07-26T02:19:04.958Z