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ORPHA:2549

Oculoauriculovertebral spectrum with radial defects

low confidenceDisorder

Also known as: Hemifacial microsomia-radial defects syndrome · Moeschler-Clarren syndrome

Publications

2,818

Trials

0

Interventional, condition-specific

Researchers

182

Distinct authors in sample

Gene link

MYT1

Strong

Readiness

4/6

Stages with a signal

Clinical definition (Orphanet)

A rare branchial arches and limb primordia development disorder characterized by variable degrees of uni- or bilateral craniofacial and radial defects that result in extremely variable phenotypic manifestations. Characteristic features include low postnatal weight, short stature, vertebral defects, hearing loss, and facial dysmorphism (incl. facial asymmetry, external, middle, and inner ear malformations, orofacial clefts, and mandibular hypoplasia). These features are invariably associated with radial defects, such as preaxial polydactyly, thumb and/or radius hypoplasia/agenesis, or triphalangeal thumb. Cardiac, pulmonary, renal, and central nervous system involvement has also 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.

Orphanet entry

Cross-references

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

Additional Mondo synonyms (1)

hemifacial microsomia-radial defects syndrome

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.”

4/6 stages with a signal

No matched interventional trial, but a gene association and an animal model are on record — often described as translation-ready / stalled at the clinical step.

  1. Gene identifiedPresent

    Strong — MYT1

  2. LiteraturePresent

    2,818 matched papers (1,428 in last 10 years) Source

  3. Phenotype characterisedPresent

    134 HPO annotations (e.g. Facial asymmetry; Abnormality of the inner ear; Short mandibular rami) Source

  4. Animal modelPresent

    4 genotype models (Mus musculus) Source

  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?

Yes — we know a specific gene responsible (MYT1).

GenCC classification: Strong.

Phenotypes (Monarch / HPO)

134

Associated phenotypes · MONDO:0007712

  • Facial asymmetry
  • Abnormality of the inner ear
  • Short mandibular rami
  • Laryngeal stridor
  • Microtia

Showing 5 of 134 — open Monarch for the full list.

Animal models (Monarch / Alliance)

4

Model associations linked to this Mondo ID

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?

2,818

2,818 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.

2,818 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).

1,428 in the last 10 years · low confidence

Phrase hits: 38 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

182

Distinct author names in 38 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
    Hovius SE3 papers · 2013
    Papers in Europe PMC
  2. 02
    Selles RW3 papers · 2013
    Papers in Europe PMC
  3. 03
    Stam HJ3 papers · 2013
    Papers in Europe PMC
  4. 04
    Wall LB3 papers · 2022

    Department of Orthopaedic Surgery, St. Louis Children's Hospital, Washington University School of Medicine, St. Louis, Missouri.

    Papers in Europe PMC
  5. 05
    de Kraker M2 papers · 2013

    Rotterdam, The Netherlands From the Departments of Plastic and Reconstructive Surgery and Rehabilitation Medicine, Erasmus Medical Center.

    Papers in Europe PMC
  6. 06
    Goldfarb CA2 papers · 2022

    Department of Orthopaedic Surgery, Washington University School of Medicine, Saint Louis, MO.

    Papers in Europe PMC
  7. 07
    Jackson M2 papers · 2024

    Genetics and Genomics, The Roslin Institute R(D)SVS, CMVM, University of Edinburgh, Edinburgh EH25 9RG, UK.

    Papers in Europe PMC
  8. 08
    James MA2 papers · 2020

    Department of Orthopaedic Surgery, Shriners Hospital Northern California, Sacramento 95817, USA.

    Papers in Europe PMC
  9. 09
    Kato H2 papers · 1990

    Department of Orthopedic Surgery, Hokkaido University School of Medicine, Japan.

    Papers in Europe PMC
  10. 10
    Kavak RP2 papers · 2019

    University of Health Sciences, Dışkapı Yıldırım Beyazıt Training and Research Hospital, Department of Radiology, Ziraat mah. Şehit Ömer Halisdemir cad. No:20, Altındağ, Ankara, Turkey.

    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.

low 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 2026-07-29

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 Oculoauriculovertebral spectrum with radial defects — 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.

("Oculoauriculovertebral spectrum with radial defects" OR "Hemifacial microsomia-radial defects syndrome" OR "Moeschler-Clarren syndrome") OR ("MYT1" OR "MYT1 syndrome" OR "MYT1-related")

Run this search on Europe PMC

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

"Oculoauriculovertebral spectrum with radial defects" OR "Hemifacial microsomia-radial defects syndrome" OR "Moeschler-Clarren syndrome"

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
  • Publication count (2818) is implausibly high for prevalence class "<1 / 1 000 000" — treat as possible over-matching, not a measure of research intensity

Ingested 2026-07-26T20:28:51.650Z