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ORPHA:2086

Optic pathway glioma

high confidenceDisorder

Publications

1,681

88.5th percentile

Trials

20

Interventional, condition-specific

Researchers

1,081

Distinct authors in sample

Gene link

—

Readiness

3/6

Stages with a signal

Clinical definition (Orphanet)

Optic pathway glioma (OPG) is a benign tumor that develop along the optic nerve (chiasm, tracts, and radiations) characterized by impairment or loss of vision and may be accompanied by diencephalic symptoms such as reduced growth and alteration in sleeping patterns. OPG are often linked to neurofibromatosis type 1 (NF1).

How rare: 1-9 / 1 000 000 — roughly one to nine people per million. In a city the size of Kolkata, perhaps a few dozen.

Orphanet entry

Cross-references

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

Additional Mondo synonyms (7)

glioma of optic tract · glioma of the optic tract · glioma of the visual pathway · glioma of visual pathway · optic pathway glioma · optic tract glioma · visual pathway glioma

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.”

3/6 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

    1,681 matched papers (1,258 in last 10 years) Source

  3. Phenotype characterisedPresent

    23 HPO annotations (e.g. Neurofibroma; Reduced visual acuity; Abnormality of the nervous system) Source

  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

    20 matched on ClinicalTrials.gov (2 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)

23

Associated phenotypes · MONDO:0016167

  • Neurofibroma
  • Reduced visual acuity
  • Abnormality of the nervous system
  • Precocious puberty
  • Papilledema

Showing 5 of 23 — open Monarch for the full list.

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 2026-07-27

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

12

Drugs / clinical candidates · MONDO_0016167

CTD chemicals (MyDisease.info)

No CTD chemical associations returned for this Mondo ID.

Literature

Is anyone studying this?

1,681

1,681 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.

1,681 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).

1,258 in the last 10 years · high confidence · 88.5th percentile (publications denominator)

Phrase hits: 1,681 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

1,081

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
    Gutmann DH13 papers · 2026

    Department of Neurology, Washington University School of Medicine, St Louis, Missouri, USA.

    Papers in Europe PMC
  2. 02
    Gupta A5 papers · 2026

    Institute for Informatics, Data Science and Biostatistics, Washington University, Saint Louis, MO 63110, United States.

    Papers in Europe PMC
  3. 03
    Bouffet E4 papers · 2026

    Division of Haematology/Oncology, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada.

    Papers in Europe PMC
  4. 04
    Chen Y4 papers · 2026

    Department of Genetics, The University of Alabama at Birmingham, Alabama.

    Papers in Europe PMC
  5. 05
    Fisher MJ4 papers · 2024

    Division of Oncology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.

    Papers in Europe PMC
  6. 06
    Hillis E4 papers · 2026

    Institute for Informatics, Data Science and Biostatistics, Washington University, Saint Louis, MO 63110, United States.

    Papers in Europe PMC
  7. 07
    Kotch C4 papers · 2025

    Division of Oncology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.

    Papers in Europe PMC
  8. 08
    Wang Y4 papers · 2026

    Department of Ophthalmology, Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China.

    Papers in Europe PMC
  9. 09
    Avery RA3 papers · 2026

    Division of Ophthalmology, Children's Hospital of Philadelphia, Philadelphia, PA, USA.

    Papers in Europe PMC
  10. 10
    Chatterjee A3 papers · 2026

    Department of Radiation Oncology, Tata Memorial Hospital, TMC and Homi Bhabha National Institute, Mumbai, Maharashtra, India.

    Papers in Europe PMC

Clinical research

Is a treatment being tested?

20

interventional trials for this specific condition

20 interventional trials matched this specific condition name; 2 currently recruiting in our sample. 1,037 trials are registered for glioma, the broader category — shown separately because they may or may not enrol this specific subtype.

Data as of 9 September 2026

20 interventional trials — more than 77.2% of diseases in the trials denominator have none at all (5501 of 7126; this disease is at the 94.8th percentile).

high confidence · 94.8th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

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

Broader category: glioma

1,037

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

Observational and natural-history studies

1 observational study matches 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.

None of the matched observational studies is currently listed as 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 2 · after dedupe 2 · already on CT.gov 0 · kept 1 · parent 0 · uncertain 0 · dropped 1 · fetched 2026-07-27

Source notes: ictrp: Error: ICTRP public search unavailable (WHO portal is SPA-only; SOAP needs partnership). Tried: https://apps.who.int/tri

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 Optic pathway glioma — 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.

"Optic pathway glioma" OR "glioma of optic tract" OR "glioma of the optic tract" OR "glioma of the visual pathway" OR "glioma of visual pathway" OR "optic tract glioma" OR "visual pathway glioma"

Run this search on Europe PMC

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

"Optic pathway glioma" OR "glioma of optic tract" OR "glioma of the optic tract" OR "glioma of the visual pathway" OR "glioma of visual pathway" OR "optic tract glioma" OR "visual pathway glioma"

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: 20 interventional · 1 observational · 0 expanded access. Only interventional studies enter the trial headline.

Parent-category trials query:

"glioma"

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 2026-07-26T02:05:05.717Z