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ORPHA:418959

Squamous cell carcinoma of the stomach

low confidenceDisorder

Also known as: Gastric squamous cell carcinoma

Publications

1,035

Trials

5

Interventional, condition-specific

Researchers

1,188

Distinct authors in sample

Gene link

—

Readiness

2/6

Stages with a signal

Clinical definition (Orphanet)

A rare epithelial tumour of stomach, defined histopathologically as keratinizing cell masses with pearl formation, mosaic pattern of cell arrangement, intercellular bridges, and high concentrations of sulphydryl or disulphide bonds, arising directly from gastric mucosa, without esophageal involvement. It is characterized by preferential location in the upper third of the stomach, high probability of lymphovascular and serosal invasion and late onset of clinical symptoms associated with poor prognosis including nonspecific symptoms of abdominal pain, dysphagia, vomiting, melena or hematochezia, haematemesis and weight loss.

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 (5)

gastric (stomach) squamous cell cancer · gastric squamous cell carcinoma · squamous cell carcinoma of stomach · squamous cell carcinoma of the stomach · stomach squamous cell carcinoma

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

    1,035 matched papers (721 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

    5 matched on ClinicalTrials.gov (1 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?

1,035

1,035 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.

1,035 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).

721 in the last 10 years · low confidence

Phrase hits: 1,035 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

1,188

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
    Wang X11 papers · 2026

    Department of Pathology, Basic Medicine College, Xinjiang Medical University, Urumqi, Xinjiang, China.

    Papers in Europe PMC
  2. 02
    Chen Y8 papers · 2026

    Department of Abdominal Oncology, West China Hospital of Sichuan University, Chengdu, P.R.C.

    Papers in Europe PMC
  3. 03
    Liu Y8 papers · 2026

    Department of Pathology , Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China.

    Papers in Europe PMC
  4. 04
    Wang Y7 papers · 2026

    Department of Cardiology, No. 945 Hospital of the PLA Joint Logistics Support Force, Yaan, 625000, Sichuan, China.

    Papers in Europe PMC
  5. 05
    Wang H6 papers · 2025

    Key Laboratory of Tropical Translational Medicine of Ministry of Education, College of Biomedical Information and Engineering and Cancer Institute of the First Affiliated Hospital, Hainan Medical University, Haikou, China.

    Papers in Europe PMC
  6. 06
    Wang J6 papers · 2026

    The Second Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, 250355, China.

    Papers in Europe PMC
  7. 07
    Yang Y6 papers · 2025

    Department of Thoracic Surgery, Affiliated Hospital of Southwest JiaotongUniversity, The Third People's Hospital of Chengdu, Chengdu, Sichuan, China.

    Papers in Europe PMC
  8. 08
    Zhang X6 papers · 2026

    Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing, China.

    Papers in Europe PMC
  9. 09
    Chen J5 papers · 2025

    Department of Breast Medicine, Affiliated Foshan Maternity and Child Healthcare Hospital, Southern Medical University, Foshan 528000, China.

    Papers in Europe PMC
  10. 10
    Chen X5 papers · 2025

    Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Medical Research Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China.

    Papers in Europe PMC

Clinical research

Is a treatment being tested?

5

interventional trials for this specific condition

5 interventional trials matched this specific condition name; 1 currently recruiting in our sample. 2,551 trials are registered for squamous cell carcinoma, the broader category — shown separately because they may or may not enrol this specific subtype.

Data as of 11 September 2026

5 interventional trials — more than 77.2% of diseases in the trials denominator have none at all (5501 of 7126; this disease is at the 89.2th percentile).

low confidence · 89.2th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

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

Broader category: squamous cell carcinoma

2,551

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 61 · after dedupe 61 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 61 · 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 (61)

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 Squamous cell carcinoma of the stomach — 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.

"Squamous cell carcinoma of the stomach" OR "Squamous cell carcinoma of stomach" OR "Gastric squamous cell carcinoma" OR "gastric (stomach) squamous cell cancer" OR "stomach squamous cell carcinoma"

Run this search on Europe PMC

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

"Squamous cell carcinoma of the stomach" OR "Squamous cell carcinoma of stomach" OR "Gastric squamous cell carcinoma" OR "gastric (stomach) squamous cell cancer" OR "stomach squamous cell carcinoma"

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

Parent-category trials query:

"squamous cell carcinoma"

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
  • Publication count (1035) is extremely high with unknown/missing prevalence — treat as possible over-matching, not proven research intensity

Ingested 2026-07-27T15:46:13.731Z