RARE DISEASERESEARCH ATLAS
Open navigation menu

ORPHA:2807

Papilloma of choroid plexus

low confidenceDisorder

Also known as: CPP · Choroid plexus papilloma

Publications

2,637

Trials

1

Interventional, condition-specific

Researchers

1,139

Distinct authors in sample

Gene link

—

Readiness

2/6

Stages with a signal

Clinical definition (Orphanet)

A rare benign type of choroid plexus tumor often occurring in the fourth ventricle (in adults) and the lateral ventricle (in children) but sometimes arising ectopically in the brain parenchyma, and presenting with nausea, vomiting, papilledema, abnormal eye movements, as well as enlarged head circumference, and gait impairment due to an increase in intracranial pressure.

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.

Additional Mondo synonyms (3)

choroid plexus papilloma · choroid plexus papilloma, no ICD-O subtype · papilloma of the choroid plexus

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

    2,637 matched papers (1,217 in last 10 years) 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 trialPresent

    1 matched on ClinicalTrials.gov

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?

2,637

2,637 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=5449) is 41.

2,637 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).

1,217 in the last 10 years · low confidence

Phrase hits: 2,637 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

1,139

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
    Hasselblatt M6 papers · 2026

    Institute of Neuropathology, University Hospital Münster, Münster, Germany (C.T., V.R., A.J., W.P., M.H.); Division of Biostatistics, German Cancer Research Center (DKFZ), Heidelberg, Germany (M.S.); Core Facility Genomics of the Medical Faculty Münster, Münster, Germany (A.W.); Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (S.H., U.K.); Department of Neuropathology, Institute for Pathology and Neuropathology, University of Tübingen, Tübingen, Germany (R.B.); Faculty of Medicine, Institute of Neuropathology, University of Duisburg-Essen, Essen, Germany (K.K.); Department of Neuropathology, Klinikum Bremen-Mitte, Bremen, Germany (M.B.); Institute of Neurology (Edinger Institute), Goethe University, Frankfurt, Germany (M.M.); Institute of Neuropathology, University of Bonn Medical Center, Bonn, Germany (T.P.); Department of Neuropathology, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany (J.F.); Department of Neuropathology, Institute of Pathology, University of Würzburg, and Comprehensive Cancer Center Mainfranken (CCCM), Würzburg, Germany (C.M.M.); Department of Neuropathology, Sainte-Anne Hospital, Paris, France (P.V.); 2nd Department of Paediatrics, Semmelweis University, Budapest, Hungary (P.H.); Department of Hematopathology, Molecular Diagnostic Laboratory, The University of Texas MD Anderson Cancer Center, Houston, Texas (A.O.); Children's Brain Tumour Research Centre, School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, UK (R.G.G.); Department of Pediatric Hematology Oncology and Blood and Marrow Transplantation, Cleveland Clinic Children's Hospital, Cleveland, Ohio (J.E.W.); Department of Neuropathology, University Hospital Heidelberg, Heidelberg, Germany (A.K., A.v.D., D.C.); Clinical Cooperation Unit Neuropathology, German Research Center (DKFZ), Heidelberg, Germany (A.K., A.v.D., D.C.); German Cancer Consortium (DKTK), German Cancer Research Ce

    Papers in Europe PMC
  2. 02
    Ishikawa H6 papers · 2026

    Laboratory Clinical Regenerative Medicine, Department of Neurosurgery, University of Tsukuba, Tsukuba, Ibaraki, Japan.

    Papers in Europe PMC
  3. 03
    Schroten H6 papers · 2026

    Pediatric Infectious Diseases, Department of Pediatrics, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

    Papers in Europe PMC
  4. 04
    Thomas C6 papers · 2026

    Institute of Neuropathology, University Hospital Münster, Münster, Germany (C.T., V.R., A.J., W.P., M.H.); Division of Biostatistics, German Cancer Research Center (DKFZ), Heidelberg, Germany (M.S.); Core Facility Genomics of the Medical Faculty Münster, Münster, Germany (A.W.); Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (S.H., U.K.); Department of Neuropathology, Institute for Pathology and Neuropathology, University of Tübingen, Tübingen, Germany (R.B.); Faculty of Medicine, Institute of Neuropathology, University of Duisburg-Essen, Essen, Germany (K.K.); Department of Neuropathology, Klinikum Bremen-Mitte, Bremen, Germany (M.B.); Institute of Neurology (Edinger Institute), Goethe University, Frankfurt, Germany (M.M.); Institute of Neuropathology, University of Bonn Medical Center, Bonn, Germany (T.P.); Department of Neuropathology, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany (J.F.); Department of Neuropathology, Institute of Pathology, University of Würzburg, and Comprehensive Cancer Center Mainfranken (CCCM), Würzburg, Germany (C.M.M.); Department of Neuropathology, Sainte-Anne Hospital, Paris, France (P.V.); 2nd Department of Paediatrics, Semmelweis University, Budapest, Hungary (P.H.); Department of Hematopathology, Molecular Diagnostic Laboratory, The University of Texas MD Anderson Cancer Center, Houston, Texas (A.O.); Children's Brain Tumour Research Centre, School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, UK (R.G.G.); Department of Pediatric Hematology Oncology and Blood and Marrow Transplantation, Cleveland Clinic Children's Hospital, Cleveland, Ohio (J.E.W.); Department of Neuropathology, University Hospital Heidelberg, Heidelberg, Germany (A.K., A.v.D., D.C.); Clinical Cooperation Unit Neuropathology, German Research Center (DKFZ), Heidelberg, Germany (A.K., A.v.D., D.C.); German Cancer Consortium (DKTK), German Cancer Research Ce

    Papers in Europe PMC
  5. 05
    Schwerk C5 papers · 2026

    Pediatric Infectious Diseases, Department of Pediatrics, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

    Papers in Europe PMC
  6. 06
    Ichimura K4 papers · 2022

    Division of Brain Tumor Translational Research, National Cancer Center Research Institute, Chuo-ku , Tokyo,

    Papers in Europe PMC
  7. 07
    Pietsch T4 papers · 2025

    Institute of Neuropathology, University Hospital Münster, Münster, Germany (C.T., V.R., A.J., W.P., M.H.); Division of Biostatistics, German Cancer Research Center (DKFZ), Heidelberg, Germany (M.S.); Core Facility Genomics of the Medical Faculty Münster, Münster, Germany (A.W.); Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (S.H., U.K.); Department of Neuropathology, Institute for Pathology and Neuropathology, University of Tübingen, Tübingen, Germany (R.B.); Faculty of Medicine, Institute of Neuropathology, University of Duisburg-Essen, Essen, Germany (K.K.); Department of Neuropathology, Klinikum Bremen-Mitte, Bremen, Germany (M.B.); Institute of Neurology (Edinger Institute), Goethe University, Frankfurt, Germany (M.M.); Institute of Neuropathology, University of Bonn Medical Center, Bonn, Germany (T.P.); Department of Neuropathology, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany (J.F.); Department of Neuropathology, Institute of Pathology, University of Würzburg, and Comprehensive Cancer Center Mainfranken (CCCM), Würzburg, Germany (C.M.M.); Department of Neuropathology, Sainte-Anne Hospital, Paris, France (P.V.); 2nd Department of Paediatrics, Semmelweis University, Budapest, Hungary (P.H.); Department of Hematopathology, Molecular Diagnostic Laboratory, The University of Texas MD Anderson Cancer Center, Houston, Texas (A.O.); Children's Brain Tumour Research Centre, School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, UK (R.G.G.); Department of Pediatric Hematology Oncology and Blood and Marrow Transplantation, Cleveland Clinic Children's Hospital, Cleveland, Ohio (J.E.W.); Department of Neuropathology, University Hospital Heidelberg, Heidelberg, Germany (A.K., A.v.D., D.C.); Clinical Cooperation Unit Neuropathology, German Research Center (DKFZ), Heidelberg, Germany (A.K., A.v.D., D.C.); German Cancer Consortium (DKTK), German Cancer Research Ce

    Papers in Europe PMC
  8. 08
    Wang J4 papers · 2026

    Division of Life Science, Department of Chemical and Biological Engineering, State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Hong Kong SAR, China.

    Papers in Europe PMC
  9. 09
    Bison B3 papers · 2025

    Department of Neuroradiology, University Hospital of Augsburg, Augsburg, Germany.

    Papers in Europe PMC
  10. 10
    Bouffet E3 papers · 2025

    The Hospital for Sick Children, Toronto, Ontario, Canada.

    Papers in Europe PMC

Clinical research

Is a treatment being tested?

1

interventional trials for this specific condition

1 interventional trial matched this specific condition name; none in our sample are currently recruiting. 254 trials are registered for papilloma, the broader category — shown separately because they may or may not enrol this specific subtype.

Data as of 27 July 2026

1 interventional trial — more than 73% of diseases in the trials denominator have none at all (5114 of 7003; this disease is at the 76.8th percentile).

low confidence · 76.8th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

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

No currently recruiting studies in the matched set. Open the same search on ClinicalTrials.gov.

Broader category: papilloma

254

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.

"Papilloma of choroid plexus" OR "Papilloma of the choroid plexus" OR "Choroid plexus papilloma" OR "choroid plexus papilloma, no ICD-O subtype"

Run this search on Europe PMC

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

"Papilloma of choroid plexus" OR "Papilloma of the choroid plexus" OR "Choroid plexus papilloma" OR "choroid plexus papilloma, no ICD-O subtype"

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

Parent-category trials query:

"papilloma"

Query health: ok — strategies attempted: phrase; with hits: phrase

Run this search on ClinicalTrials.gov

Synonyms dropped by stoplist: CPP

Confidence reasoning

  • Preferred label is multi-word and distinctive
  • 1 synonym(s) dropped by stoplist (may under-count)
  • No label/synonym collisions with other diseases in this corpus
  • Publication count (2637) is extremely high with unknown/missing prevalence — treat as possible over-matching, not proven research intensity

Ingested 2026-07-26T21:16:50.127Z