ORPHA:424996
Squamous cell carcinoma of gallbladder and extrahepatic biliary tract
Also known as: Squamous cell carcinoma of gallblader and EBT
Query health: suspect — Only one of 2 strategies returned hits (phrase).
Publications
1
7th percentile
Trials
0
Interventional, condition-specific
Researchers
9
Distinct authors in sample
Gene link
—
Readiness
1/6
Stages with a signal
Clinical definition (Orphanet)
A rare hepatic and biliary tract tumor, arising either in the gallbladder itself or in the epithelium lining the extrahepatic biliary tree, the cystic duct and peribiliary glands. It is characterized by a substantial keratinization with abundant keratohyalin pearls and central deposition of dense keratin material within infiltrative nests and locally aggressive nature. In the early stages of the disease symptoms are vague and nonspecific (abdominal pain, jaundice and vomiting). In the advanced stages it may present with a bulky tumor and symptoms of adjacent organ involvement.
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.
Cross-references
Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.
- MONDO:0018537
- UMLS:C4707898
Additional Mondo synonyms (1)
squamous cell carcinoma of gallblader and EBT
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.”
1/6 stages with a signal
Research-stage checklist from open sources (GenCC, literature, Monarch when enriched, ClinicalTrials.gov). Not a prognosis or care recommendation.
- Gene identifiedNot found
No GenCC disease–gene assertion in this build
- LiteraturePresent
1 matched papers (1 in last 10 years) Source
- Phenotype characterisedNot checked
Not yet enriched from Monarch / HPO
- Animal modelNot checked
Not yet enriched from Monarch / Alliance
- Orphan designationNot checked
FDA/EMA orphan-drug designation not enriched yet
- Interventional trialNot found
No matched interventional trial under our ClinicalTrials.gov rules
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?
1
1 paper 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=5449) is 41.
1 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 in the last 10 years · high confidence · 7th percentile (publications denominator)
Phrase hits: 1 · MeSH hits: 0
Who's working on it?
9
Distinct author names in 1 sampled paper — 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.
- 01Goto Y1 paper · 2025
Department of Thoracic Oncology, National Cancer Center Hospital, Tokyo, Japan.
Papers in Europe PMC - 02Higashi T1 paper · 2025
Division of Health Services Research, Institute for Cancer Control, National Cancer Center, Tokyo, Japan.
Papers in Europe PMC - 03Iwata S1 paper · 2025
Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan.
Papers in Europe PMC - 04Kawai A1 paper · 2025
Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan.
Papers in Europe PMC - 05Mizushima Y1 paper · 2025
Division of Health Services Research, Institute for Cancer Control, National Cancer Center, Tokyo, Japan.
Papers in Europe PMC - 06Rikitake R1 paper · 2025
Division of Health Services Research, Institute for Cancer Control, National Cancer Center, Tokyo, Japan.
Papers in Europe PMC - 07Shimoi T1 paper · 2025
Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan.
Papers in Europe PMC - 08Yamamoto Y1 paper · 2025
Division of Health Services Research, Institute for Cancer Control, National Cancer Center, Tokyo, Japan.
Papers in Europe PMC - 09Yatabe Y1 paper · 2025
Department of Diagnostic Pathology, National Cancer Center Hospital, Tokyo, Japan.
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).
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.
high confidence · 36.5th 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.
Broader category carcinoma of gallbladder and extrahepatic biliary tract also has no matched interventional trial. See who's working on it — people publishing on this disease are often the practical next contact when no trial is listed.
Broader category: carcinoma of gallbladder and extrahepatic biliary tract
0
Interventional trials for the parent category, exclusive of NCT IDs already counted above. Eligibility for this subtype is not guaranteed.
Parent-category matching found a broader label but no interventional trials under it. How we count trials.
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 2026-07-26This 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 gallbladder and extrahepatic biliary tract" OR "Squamous cell carcinoma of the gallbladder and extrahepatic biliary tract" OR "Squamous cell carcinoma of gallblader and EBT" OR "Squamous cell carcinoma of the gallblader and EBT"
ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):
"Squamous cell carcinoma of gallbladder and extrahepatic biliary tract" OR "Squamous cell carcinoma of the gallbladder and extrahepatic biliary tract" OR "Squamous cell carcinoma of gallblader and EBT" OR "Squamous cell carcinoma of the gallblader and EBT" OR "extrahepatic bile duct squamous cell carcinoma"
Recall-expansion terms: extrahepatic bile duct squamous cell carcinoma
Study-type breakdown: 0 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.
Parent-category trials query:
"carcinoma of gallbladder and extrahepatic biliary tract"
Query health: suspect — strategies attempted: phrase, recall-expansion; 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 2026-07-27T15:58:18.806Z