Clinical trial · Interventional
Development of a New Immunochemistry Method Using Antibodies of Proteins Related Bile Duct Cancer
Development of a New Immunochemistry Method Using Antibodies of Aminoacyl-tRNA Synthetases Group and Aminoacyl-transfer Ribonucleic Acid Synthetases-interacting Multifunctional protein2 Lacking Exon 2 in the Bile Duct Cancer Cell; Multicenter Study
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
The sensitivity of brushing cytology used to distinguish the cause of biliary strictures is low and clinical usefulness is not secured. The aim of this study was to develop a new differential staining method for cytology which is difficult to differentiate by the conventional staining method using biliary cancer related protein expressed only in bile duct cancer.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Bile Duct Obstruction, Extrahepatic | — | UNRESOLVED | — |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Cytology staining | Diagnostic Test | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- type
- EXPERIMENTAL
- label
- Bile duct stenosis
- description
- This arm includes patients with bile duct stenosis. Endobiliary brushing cytology specimens will be obtained with endoscopic retrograde cholangiopancreatography (ERCP) of patients with bile duct stenosis. Cytology staining will be performed in the cytology specimens.
- interventionNames
- Diagnostic Test: Cytology staining
Primary outcomes (1)
- measure
- The usefulness of new staining method
- timeFrame
- 1 year
- description
- The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of new staining method will be compared with th conventional Pap staining of brushing cytology specimens.
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 19 Years
Show eligibility criteria text
Inclusion Criteria: * Patients with biliary cancer confirmed by imaging (CT, MRI, positron emission tomography) * Patients with bile duct cancer diagnosed using brushing cytology by endoscopic retrograde pancreaticoduodenoscopy * Patients who underwent surgical treatment with biliary cancer * Patients with bile duct stenosis Exclusion Criteria: * Minors under the age of 19, vulnerable subjects such as illiteracy * Necrotic specimens * Samples with non-diagnostic cytology results and insufficient cells for further evaluation * Samples classified as neoplastic (benign or other) * Patient with cholangitis in the bile duct
References
Publications (1)
- DERIVEDJang SI, Nahm JH, Kwon NH, Jeong S, Lee TH, Cho JH, Kwon CI, Kim DU, Kim JM, Cho HD, Lee HS, Kim S, Lee DK. Clinical utility of methionyl-tRNA synthetase 1 immunostaining in cytologic brushings of indeterminate biliary strictures: a multicenter prospective study. Gastrointest Endosc. 2021 Oct;94(4):733-741.e4. doi: 10.1016/j.gie.2021.04.026. Epub 2021 May 6. PMID 33965384