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ORPHA:98979

Chandler syndrome

low confidenceSubtype of disorder

Publications

3,562

Trials

21

Interventional, condition-specific

Researchers

1,021

Distinct authors in sample

Gene link

—

Readiness

2/6

Stages with a signal

Clinical definition (Orphanet)

A clinical variant of iridocorneal endothelial (ICE) syndrome, characterized by very few iris abnormalities but more severe corneal edema and less severe secondary glaucoma than seen in the other two ICE syndrome variants: Cogan-Reese syndrome and essential iris atrophy.

Orphanet entry

Cross-references

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

Additional Mondo synonyms (3)

Chandler's Syndrome · Chandler's syndrome · endothelial corneal dystrophy

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

An interventional trial matched this condition name on ClinicalTrials.gov — see trials below.

  1. Gene identifiedNot found

    No GenCC disease–gene assertion in this build

  2. LiteraturePresent

    3,562 matched papers (2,433 in last 10 years) Source

  3. Phenotype characterisedNot found

    No HPO disease–phenotype associations via Monarch for these Mondo IDs

  4. Animal modelNot found

    No Alliance genotype “model of” associations via Monarch for these Mondo IDs

  5. Orphan designationNot found

    No FDA or EMA orphan-drug designation matched this disease via UMLS or preferred name Source

  6. Interventional trialPresent

    21 matched on ClinicalTrials.gov (7 recruiting in sample)

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?

3,562

3,562 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.

3,562 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).

2,433 in the last 10 years · low confidence

Phrase hits: 3,562 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

1,021

Distinct author names in 200 sampled papers — named people below.

Who's working on it?

People publishing on this condition (sampled Europe PMC records). Affiliation is the most recent found in that sample.

  1. 01
    Okumura N20 papers · 2026

    Department of Biomedical Engineering, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, 610-0394, Japan. nokumura@mail.doshisha.ac.jp.

    Papers in Europe PMC
  2. 02
    Koizumi N17 papers · 2026

    Department of Biomedical Engineering, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, 610-0394, Japan.

    Papers in Europe PMC
  3. 03
    Kruse F11 papers · 2026

    Department of Ophthalmology, University of Erlangen-Nürnberg, Erlangen, Germany.

    Papers in Europe PMC
  4. 04
    Schlötzer-Schrehardt U11 papers · 2026

    Department of Ophthalmology, University of Erlangen-Nürnberg, Erlangen, Germany.

    Papers in Europe PMC
  5. 05
    Hayashi T10 papers · 2026

    Department of Ophthalmology, Nihon University Itabashi Hospital, Tokyo, Japan, nihon-u.ac.jp.

    Papers in Europe PMC
  6. 06
    Tourtas T10 papers · 2026

    Department of Ophthalmology, University of Erlangen-Nürnberg, Erlangen, Germany.

    Papers in Europe PMC
  7. 07
    Gain P9 papers · 2026

    Laboratoire, biologie, ingénierie et imagerie pour l'ophtalmologie, BiiO, faculté de médecine, Campus Santé Innovation, université Jean-Monnet, Saint-Étienne, France; Service d'ophtalmologie, centre hospitalier et universitaire de Saint-Étienne, Saint-Étienne, France.

    Papers in Europe PMC
  8. 08
    Thuret G9 papers · 2026

    Laboratoire, biologie, ingénierie et imagerie pour l'ophtalmologie, BiiO, faculté de médecine, Campus Santé Innovation, université Jean-Monnet, Saint-Étienne, France; Service d'ophtalmologie, centre hospitalier et universitaire de Saint-Étienne, Saint-Étienne, France.

    Papers in Europe PMC
  9. 09
    Davidson AE8 papers · 2026

    UCL Institute of Ophthalmology, London, United Kingdom.

    Papers in Europe PMC
  10. 10
    Liu S8 papers · 2026

    Institute of Ophthalmology, 11-43 Bath Street , ,

    Papers in Europe PMC

Clinical research

Is a treatment being tested?

21

interventional trials for this specific condition

21 interventional trials matched this specific condition name; 7 currently recruiting in our sample.

Data as of 11 September 2026

21 interventional trials — more than 77.2% of diseases in the trials denominator have none at all (5501 of 7126; this disease is at the 95th percentile).

low confidence · 95th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

21 interventional trials matched after quoted-phrase search and title/condition post-filter.

Observational and natural-history studies

14 observational studies match this condition. These do not test a treatment and are not counted in the interventional-trial headline, but they are genuine research: natural-history work often defines the endpoints needed for a future rare-disease trial, and families may be able to enroll.

Recruiting or not-yet-recruiting

Open the complete matched search on ClinicalTrials.gov

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 12 · after dedupe 11 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 11 · 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).

Uncertain / not reviewed (11)

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 Chandler syndrome — 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.

"Chandler syndrome" OR "Chandler's Syndrome" OR "endothelial corneal dystrophy"

Run this search on Europe PMC

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

"Chandler syndrome" OR "Chandler's Syndrome" OR "endothelial corneal dystrophy"

Interventional trials matched via: phrase (mesh = registered under a MeSH descriptor no name phrase would catch; recall-expansion = gene / selected parent terms used only for trials).

Study-type breakdown: 21 interventional · 14 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
  • Publication count (3562) is extremely high with unknown/missing prevalence — treat as possible over-matching, not proven research intensity

Ingested 2026-07-27T05:50:58.040Z