ORPHA:98946
Coloboma of eyelid
Publications
94
50.8th percentile
Trials
0
Interventional, condition-specific
Researchers
475
Distinct authors in sample
Gene link
—
Readiness
2/6
Stages with a signal
Clinical definition (Orphanet)
A rare, genetic, developmental defect of the eye characterized by a uni- or bilateral, symmetrical or asymmetrical, partial or full thickness defect of the superior or inferior eyelid margin, ranging in size from a small notch to complete absence of the entire lid, typically located on the medial to lateral third of the eyelid, resulting in an unprotected cornea and thus possibly leading to exposure keratopathy and vision impairment. It may occur isolated, be associated with other ocular defects or be part of a craniofacial syndrome, such as Treacher-Collins or Goldenhar syndrome.
Cross-references
Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.
- MONDO:0020357
- UMLS:C0521573
- NCIT:C98878
Additional Mondo synonyms (1)
coloboma of the eyelid
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.”
2/6 stages with a signal
No specific-condition interventional trial, but broader-category trials exist — discuss eligibility with a clinician.
- Gene identifiedNot found
No GenCC disease–gene assertion in this build
- LiteraturePresent
94 matched papers (43 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 trialPartial
None under the specific name; 1 for broader category coloboma
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?
94
94 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.
94 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).
43 in the last 10 years · high confidence · 50.8th percentile (publications denominator)
Phrase hits: 94 · MeSH hits: 0
Who's working on it?
475
Distinct author names in 94 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.
- 01Agrawal S2 papers · 2022
Oculoplasty and Orbital Tumor Services, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.
Papers in Europe PMC - 02Ballantyne AJ2 papers · 1949Papers in Europe PMC
- 03Bianca S2 papers · 2021
Genetica Medica, ARNAS Garibaldi, ARNAS Garibaldi, Catania, Italy.
Papers in Europe PMC - 04Kaur J2 papers · 2011
Department of Anaesthesiology and Intensive Care, Gian Sagar Medical College and Hospital, Ram Nagar, Banur, Punjab, India.
Papers in Europe PMC - 05Kumar JP2 papers · 2005
Department of Biology, Indiana University, Bloomington, Indiana 47401, USA. jkumar@bio.indiana.edu
Papers in Europe PMC - 06Meel R2 papers · 2022
Oculoplasty and Orbital Tumor Services, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.
Papers in Europe PMC - 07Modaboyina S2 papers · 2022
Oculoplasty and Orbital Tumor Services, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.
Papers in Europe PMC - 08Pushker N2 papers · 2022
Oculoplasty and Orbital Tumor Services, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.
Papers in Europe PMC - 09Wang H2 papers · 2020
Department of Medical Genetics, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan, China.
Papers in Europe PMC - 10Wang Y2 papers · 2024
Department of Obstetrics, The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, China.
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). 1 trial are registered for coloboma, 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.
1 interventional trial matched coloboma, the broader category — listed below. Those studies are not counted in the condition-specific total.
Broader category: coloboma
1
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
- NCT02157025·RECRUITING·A More Engaging Visual Field Test to Increase Use and Reliability in Pediatrics
Conditions: Glaucoma, Suspect · Optic Nerve Hypoplasia and Abnormalities of the Central Nervous System · Congenital Coloboma of the Optic Nerve · Optic Nerve Head Pits, Bilateral Congenital·Matched via name phrase
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.
"Coloboma of eyelid" OR "Coloboma of the eyelid"
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Coloboma of eyelid" OR "Coloboma of the eyelid"
Study-type breakdown: 0 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.
Parent-category trials query:
"coloboma"
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 2026-07-27T05:45:47.783Z