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ORPHA:590539

Isolated melanotic schwannoma

low confidenceDisorder

Also known as: Isolated melanocytic schwannoma

Publications

0

Trials

0

Interventional, condition-specific

Researchers

0

Distinct authors in sample

Gene link

—

Readiness

0/6

Stages with a signal

Clinical definition (Orphanet)

A rare nervous system tumor characterized by cells phenotypically representing Schwann cells but containing melanosomes and expressing melanoma markers. The entity occurs as a non-psammomatous (typically affecting spinal nerves) or a psammomatous (also involving nerves of the intestinal tract and heart) variant. About 50% of psammomatous tumors are associated with Carney complex. Slightly over 10% of melanotic schwannomas follow a malignant course.

How rare: How common this is has not been clearly measured.

Orphanet entry

Cross-references

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

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.”

0/6 stages with a signal

Search queries returned nothing — this usually means a naming mismatch, not proof that nothing exists.

  1. Gene identifiedNot found

    No GenCC disease–gene assertion in this build

  2. LiteratureNot checked

    Query returned nothing — not evidence of absence Source

  3. Phenotype characterisedNot checked

    Not yet enriched from Monarch / HPO

  4. Animal modelNot checked

    Not yet enriched from Monarch / Alliance

  5. Orphan designationNot checked

    FDA/EMA orphan-drug designation not enriched yet

  6. Interventional trialNot checked

    Broken query — trial zero not trusted

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?

0

We found no papers under this exact name — work may still exist under another label.

0 in the last 10 years · low confidence

Phrase hits: 0 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

0

Distinct author names in 0 sampled papers.

Who's working on it?

No author names could be extracted from the sampled publications. Try the Europe PMC query in “How we counted this,” or contact an umbrella rare-disease organisation for researcher referrals.

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). 64 trials are registered for schwannoma, 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.

low confidence

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.

64 interventional trials matched schwannoma, the broader category — listed below. Those studies are not counted in the condition-specific total.

Broader category: schwannoma

64

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

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 2026-07-26

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.

"Isolated melanotic schwannoma" OR "Isolated melanocytic schwannoma"

Run this search on Europe PMC

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

"Isolated melanotic schwannoma" OR "Isolated melanocytic schwannoma" OR "melanotic neurilemmoma"

Recall-expansion terms: melanotic neurilemmoma

Study-type breakdown: 0 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.

Parent-category trials query:

"schwannoma"

Query health: broken — strategies attempted: phrase, recall-expansion; with hits: none

Parent literature probe: central nervous system sarcoma (MONDO:0002217) — 54 hits

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
  • Zero publications but parent term central nervous system sarcoma has 54 — literature likely indexed under a broader name

Ingested 2026-07-27T18:48:36.981Z · excluded from neglect metrics