ORPHA:300512
Onychomatricoma
Publications
280
66.3th percentile
Trials
0
Interventional, condition-specific
Researchers
682
Distinct authors in sample
Gene link
—
Readiness
1/6
Stages with a signal
Clinical definition (Orphanet)
Onychomatricoma is a rare, benign nail tumor originating in the nail matrix characterized by localized or diffuse thickening of the nail plate, increased transverse or longitudinal overcurvature, a yellow longitudinal band of variable width, swelling of the proximal nail fold, multiple splinter hemorrhages and the presence of honeycomb-like cavities in the distal margin of the nail plate. Nail and dorsal pterygium may be associated. Occasionally, a pigmented lesion has been reported.
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:0017587
- UMLS:C4751078
Additional Mondo synonyms (6)
nail matrix neoplasm · nail matrix tumor · nail matrix tumour · neoplasm of nail matrix · tumor of nail matrix · tumour of nail matrix
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
280 matched papers (179 in last 10 years) Source
- Phenotype characterisedNot found
No HPO disease–phenotype associations via Monarch for these Mondo IDs
- Animal modelNot found
No Alliance genotype “model of” associations via Monarch for these Mondo IDs
- Orphan designationNot found
No FDA or EMA orphan-drug designation matched this disease via UMLS or preferred name Source
- 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 2026-07-29
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?
280
280 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.
280 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).
179 in the last 10 years · medium confidence · 66.3th percentile (publications denominator)
Phrase hits: 280 · MeSH hits: 0
Who's working on it?
682
Distinct author names in 200 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.
- 01Perrin C16 papers · 2026
*The Laboratoire Central d'Anatomie Pathologique, Hôpital L. Pasteur, University of Nice, Nice, France; †Nail's Dermatology Consultations, Cannes, France; ‡UOC Dermatologia, Ospedale Civile, Imperia, Italia; §Division of Genetic of Skin Carcinogenesis, Section of Normal and Neoplastic Epidermal Differentiation, German Cancer Research Center, Heidelberg, Germany; ¶Department of Pathology, West Kent Oncology Center, Maidstone Hospital, Hermitage Lane, England; ‖Service de Chirurgie Plastique, University of Nice, Nice, France; and **Institut Polyclinique de Cannes, Cannes, France.
Papers in Europe PMC - 02Rubin AI9 papers · 2024
Department of Dermatology, Hospital of the University of Pennsylvania, 3600 Spruce Street, 2 Maloney, Philadelphia, PA 19104, USA; The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA; Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA.
Papers in Europe PMC - 03Tosti A9 papers · 2024
Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, University of Miami, Miami, 1600 Northwest 10th Avenue, FL 33136, USA. Electronic address: atosti@med.miami.edu.
Papers in Europe PMC - 04Thomas L8 papers · 2024
Department of Dermatology, Centre Hospitalier Lyon-Sud, Hospices Civils de Lyon, Lyon, France.
Papers in Europe PMC - 05Ambrosetti D7 papers · 2024
Laboratoire Central d'Anatomie Pathologique, Hôpital L. Pasteur, University of Nice, Nice, France.
Papers in Europe PMC - 06Di Chiacchio N6 papers · 2025
Dermatologic Clinic, Hospital do Servidor Publico Municipal de São Paulo, São Paulo, Brazil.
Papers in Europe PMC - 07Grover C6 papers · 2026
Department of Dermatology and STD, University College of Medical Sciences and Guru Teg Bahadur Hospital, New Delhi, India.
Papers in Europe PMC - 08Lee D6 papers · 2026
Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Papers in Europe PMC - 09Park JH6 papers · 2024
Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Papers in Europe PMC - 10Piraccini BM6 papers · 2023
Dermatology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy.
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 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.
medium 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 2026-07-30
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 Onychomatricoma — check Associations / patient organisations on that page.
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.
"Onychomatricoma" OR "nail matrix neoplasm" OR "nail matrix tumor" OR "nail matrix tumour" OR "neoplasm of nail matrix" OR "neoplasm of the nail matrix" OR "tumor of nail matrix" OR "tumor of the nail matrix" OR "tumour of nail matrix" OR "tumour of the nail matrix"
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Onychomatricoma" OR "nail matrix neoplasm" OR "nail matrix tumor" OR "nail matrix tumour" OR "neoplasm of nail matrix" OR "neoplasm of the nail matrix" OR "tumor of nail matrix" OR "tumor of the nail matrix" OR "tumour of nail matrix" OR "tumour of the nail matrix"
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 short or not clearly distinctive
- No synonyms dropped by stoplist
- No label/synonym collisions with other diseases in this corpus
Ingested 2026-07-27T12:41:18.631Z