RARE DISEASERESEARCH ATLAS
Open navigation menu

ORPHA:423968

Squamous cell carcinoma of the small intestine

high confidenceDisorder

Also known as: Squamous cell carcinoma of the small bowel

Publications

54

42.3th percentile

Trials

1

Interventional, condition-specific

Researchers

330

Distinct authors in sample

Gene link

—

Readiness

2/6

Stages with a signal

Clinical definition (Orphanet)

Squamous cell carcinoma of the small intestine is an extremely rare, malignant, epithelial tumor of the small intestine (most often localized in the duodenum). Presenting symptoms are often nonspecific, such as weight loss, epigastric pain, anorexia, weakness, fatigue, vomiting and abdominal distension, and vary depending on localization of the tumor. Gastrointestinal bleeding and perforation may occur in advanced cases.

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 (4)

small intestinal squamous cell cancer · small intestinal squamous cell carcinoma · small intestine squamous cell carcinoma · squamous cell carcinoma of the small bowel

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

    54 matched papers (33 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

    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)

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?

54

54 papers have ever been published on this condition (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.

54 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).

33 in the last 10 years · high confidence · 42.3th percentile (publications denominator)

Phrase hits: 54 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

330

Distinct author names in 54 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 S3 papers · 2021

    Clinical Trial Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Cancer Hospital Chinese Academy of Medical Sciences, Chaoyang District, Beijing, China.

    Papers in Europe PMC
  2. 02
    Wang Y3 papers · 2025

    Clinical Trial Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Cancer Hospital Chinese Academy of Medical Sciences, Chaoyang District, Beijing, China.

    Papers in Europe PMC
  3. 03
    Zhang Y3 papers · 2026

    Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China.

    Papers in Europe PMC
  4. 04
    Ji X2 papers · 2023

    Clinical Trial Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Cancer Hospital Chinese Academy of Medical Sciences, Chaoyang District, Beijing, China.

    Papers in Europe PMC
  5. 05
    Khushman M2 papers · 2021

    Medical Oncology, The University of South Alabama, Mitchell Cancer Institute, Mobile, Alabama, USA.

    Papers in Europe PMC
  6. 06
    Kikuchi H2 papers · 1994
    Papers in Europe PMC
  7. 07
    Kitamura N2 papers · 1994
    Papers in Europe PMC
  8. 08
    Liu H2 papers · 2021

    Department of Pharmacology and Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.

    Papers in Europe PMC
  9. 09
    Nakayoshi A2 papers · 1994

    Department of Surgery, Showa University Fujigaoka Hospital.

    Papers in Europe PMC
  10. 10
    Namatame K2 papers · 1994
    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. 2,555 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

1 interventional trial — more than 77.2% of diseases in the trials denominator have none at all (5501 of 7126; this disease is at the 80.1th percentile).

high confidence · 80.1th 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: squamous cell carcinoma

2,555

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 29 · after dedupe 29 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 29 · 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 (29)

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 small intestine — 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 small intestine" OR "Squamous cell carcinoma of small intestine" OR "Squamous cell carcinoma of the small bowel" OR "Squamous cell carcinoma of small bowel" OR "small intestinal squamous cell cancer" OR "small intestinal squamous cell carcinoma" OR "small intestine 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 small intestine" OR "Squamous cell carcinoma of small intestine" OR "Squamous cell carcinoma of the small bowel" OR "Squamous cell carcinoma of small bowel" OR "small intestinal squamous cell cancer" OR "small intestinal squamous cell carcinoma" OR "small intestine 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: 1 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

Ingested 2026-07-27T15:53:50.545Z