ORPHA:2874
Phakomatosis pigmentokeratotica
Publications
141
60.3th percentile
Trials
0
Interventional, condition-specific
Researchers
602
Distinct authors in sample
Gene link
—
Readiness
1/6
Stages with a signal
Clinical definition (Orphanet)
A rare epidermal nevus disorder characterized by the association of speckled lentiginous nevi with epidermal sebaceous nevi, and extracutaneous anomalies.
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.
Cross-references
Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.
- MONDO:0017317
- MeSH:C537893
- UMLS:C2931658
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.
- Gene identifiedNot found
No GenCC disease–gene assertion in this build
- LiteraturePresent
141 matched papers (71 in last 10 years) Source
- Phenotype characterisedNot checked
Not yet enriched from Monarch / HPO
- Animal modelNot checked
Not yet enriched from Monarch / Alliance
- Orphan designationNot checked
FDA/EMA orphan-drug designation not enriched yet
- 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)
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?
141
141 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=5449) is 41.
141 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).
71 in the last 10 years · high confidence · 60.3th percentile (publications denominator)
Phrase hits: 141 · MeSH hits: 0
Who's working on it?
602
Distinct author names in 141 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.
- 01Happle R18 papers · 2023
Department of Dermatology, Philipp University of Marburg, Deutschhausstrasse 9, D-35033 Marburg, Germany. happle@mailer.uni-marburg.de
Papers in Europe PMC - 02Torchia D6 papers · 2026
Department of Dermatology, Queen Elizabeth Hospital, King's Lynn, UK.
Papers in Europe PMC - 03Ovejero D5 papers · 2023
Musculoskeletal Research Unit, Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain.
Papers in Europe PMC - 04Choate KA4 papers · 2019
Department of Dermatology, Yale University School of Medicine, New Haven, Connecticut.
Papers in Europe PMC - 05Collins MT4 papers · 2023
Skeletal Disorders and Mineral Homeostasis Section, National Institute of Dental and Craniofacial Research (NIDCR), NIH, Bethesda, Maryland, USA.
Papers in Europe PMC - 06Kinsler VA4 papers · 2026
Clinical and Molecular Genetics Unit, UCL Institute of Child Health, London, UK; Paediatric Dermatology, Great Ormond St Hospital for Children, London, UK. Electronic address: v.kinsler@ucl.ac.uk.
Papers in Europe PMC - 07Sugarman JL4 papers · 2018
Departments of Dermatology and Community and Family Medicine, University of California, San Francisco, CA 95404, USA. pediderm@yahoo.com
Papers in Europe PMC - 08Boyce AM3 papers · 2020
Skeletal Clinical Studies Unit, Craniofacial and Skeletal Disease Branch, National ADDRESSES, references BRACKETS, National Institute of Dental and Craniofacial Research, National Institutes of Health, 30 Convent Drive, Room 228, MSC 4320, Bethesda, MD, 20892-4320, USA.
Papers in Europe PMC - 09Brems H3 papers · 2024
Department of Human Genetics, University Hospital Leuven, 3000 Leuven, Belgium.
Papers in Europe PMC - 10Jaeger ZJ3 papers · 2025
Dermatology, University of California San Diego, San Diego, 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 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.
See who's working on it — people publishing on this disease are often the practical next contact when no trial is listed.
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 2026-07-26This 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.
"Phakomatosis pigmentokeratotica"
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Phakomatosis pigmentokeratotica"
Study-type breakdown: 0 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.
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 2026-07-26T21:30:15.215Z