ORPHA:75378
Oligocone trichromacy
Also known as: Oligocone syndrome
Publications
100
50.5th percentile
Trials
0
Interventional, condition-specific
Researchers
499
Distinct authors in sample
Gene link
—
Readiness
1/6
Stages with a signal
Clinical definition (Orphanet)
A rare non- form of cone photoreceptor dysfunction syndrome characterized by reduced visual acuity, normal fundus appearance and absent or reduced cone responses on electroretinography. In contrast to all other forms of cone dysfunction color vision is normal.
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:0019151
- UMLS:C4302876
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
100 matched papers (42 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?
100
100 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.
100 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).
42 in the last 10 years · high confidence · 50.5th percentile (publications denominator)
Phrase hits: 100 · MeSH hits: 0
Who's working on it?
499
Distinct author names in 100 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.
- 01Michaelides M12 papers · 2024
UCL Institute of Ophthalmology, London, United Kingdom 4Moorfields Eye Hospital, London, United Kingdom.
Papers in Europe PMC - 02Carroll J10 papers · 2023
Department of Ophthalmology, Medical College of Wisconsin, Milwaukee, WI 53226, USA. jcarroll@mcw.edu
Papers in Europe PMC - 03Neitz M8 papers · 2025
Department of Ophthalmology, University of Washington, Seattle, Washington, United States.
Papers in Europe PMC - 04Dubis AM7 papers · 2022
UCL Institute of Ophthalmology, London, United Kingdom 4Moorfields Eye Hospital, London, United Kingdom.
Papers in Europe PMC - 05Neitz J6 papers · 2025
Department of Ophthalmology, University of Washington, Seattle, Washington, United States.
Papers in Europe PMC - 06Wissinger B6 papers · 2018
Molecular Genetics Laboratory, Institute for Ophthalmic Research, and.
Papers in Europe PMC - 07Moore AT5 papers · 2015
Moorfields Eye Hospital, London, United Kingdom; University College London, Institute of Ophthalmology, London, United Kingdom; Department of Ophthalmology, University of California San Francisco, San Francisco, California.
Papers in Europe PMC - 08Baraas RC4 papers · 2024
Faculty of Health and Social Sciences, National Centre for Optics, Vision and Eye Care, University of South-Eastern Norway, Kongsberg, Norway.
Papers in Europe PMC - 09Dubra A4 papers · 2021
Department of Ophthalmology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States 9Department of Biophysics, Medical College of Wisconsin, Milwaukee, Wisconsin, United States 10Department of Cell Biology, Neurobiology, & Anatomy, Medical Coll.
Papers in Europe PMC - 10
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.
"Oligocone trichromacy" OR "Oligocone syndrome"
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Oligocone trichromacy" OR "Oligocone 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
Ingested 2026-07-27T01:47:53.354Z