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ORPHA:487809

Pediatric collagenous gastritis

high confidenceDisorder

Also known as: Childhood-onset collagenous gastritis

Publications

16

30.9th percentile

Trials

0

Interventional, condition-specific

Researchers

69

Distinct authors in sample

Gene link

—

Readiness

3/6

Stages with a signal

Clinical definition (Orphanet)

A rare gastroenterologic disease characterized by the histopathological finding of a thickened (> 10 µm) gastric subepithelial collagen layer in association with an inflammatory infiltrate in the lamina propria. Patients typically present with upper abdominal pain and severe iron deficiency anemia. The condition is not commonly associated with autoimmune diseases, and involvement of the colon is less frequent than in the adult form. The disease takes a generally benign course with limited long-term morbidity and no increased mortality.

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.

Orphanet entry

Cross-references

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

Additional Mondo synonyms (1)

childhood-onset collagenous gastritis

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

No specific-condition interventional trial, but broader-category trials exist — discuss eligibility with a clinician.

  1. Gene identifiedNot found

    No GenCC disease–gene assertion in this build

  2. LiteraturePresent

    16 matched papers (13 in last 10 years) Source

  3. Phenotype characterisedPresent

    1 HPO annotations (e.g. Childhood onset) 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 trialPartial

    None under the specific name; 137 for broader category gastritis

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)

1

Associated phenotypes · MONDO:0044624

  • Childhood onset

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?

16

16 papers have ever been indexed 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=3967) is 59.

16 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).

13 in the last 10 years · high confidence · 30.9th percentile (publications denominator)

Phrase hits: 16 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

69

Distinct author names in 16 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.

  1. 01
    Accomando F1 paper · 2026

    UO Pediatria, Ospedale G.B. Morgagni-L. Pierantoni, Ausl Romagna, Forlì.

    Papers in Europe PMC
  2. 02
    Ahn S1 paper · 2026

    Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.

    Papers in Europe PMC
  3. 03
    Alex G1 paper · 2018

    Department of Gastroenterology and Clinical Nutrition, The Royal Children's Hospital, Melbourne, Australia.

    Papers in Europe PMC
  4. 04
    Anderzén J1 paper · 2020

    Department of Pediatrics, Ryhov County Hospital, Jönköping, Sweden.

    Papers in Europe PMC
  5. 05
    Antona G1 paper · 2024

    Department of Pediatric Surgery, Hospital Universitario de Navarra, Pamplona, Navarra, Spain.

    Papers in Europe PMC
  6. 06
    Arkel R1 paper · 2020

    Department of Pediatrics, Northern Älvsborg County Hospital, Trollhättan, Sweden.

    Papers in Europe PMC
  7. 07
    Arredondo Montero J1 paper · 2024

    Department of Pediatric Surgery, Hospital Universitario de Navarra, Pamplona, Navarra, Spain.

    Papers in Europe PMC
  8. 08
    Attard TM1 paper · 2013
    Papers in Europe PMC
  9. 09
    Barker C1 paper · 2018

    British Columbia Children’s Hospital, Vancouver, BC, Canada

    Papers in Europe PMC
  10. 10
    Beinvogl BC1 paper · 2021

    Division of Pediatric Gastroenterology, Hepatology and Nutrition.

    Papers in Europe PMC

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). 137 trials are registered for gastritis, the broader category — shown separately because they may or may not enrol this specific subtype.

Data as of 11 September 2026 · last trial check 11 September 2026

No matched interventional trials. This is true for 77.2% of diseases in the trials denominator (5501 of 7126). Here are the researchers publishing on it.

high confidence · 38.6th 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.

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

Broader category: gastritis

137

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

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

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 Pediatric collagenous gastritis — 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.

"Pediatric collagenous gastritis" OR "Childhood-onset collagenous gastritis"

Run this search on Europe PMC

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

"Pediatric collagenous gastritis" OR "Childhood-onset collagenous gastritis"

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

Parent-category trials query:

"gastritis"

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 2026-07-27T17:21:43.403Z