Bile Duct Cancer, Biliary Stricture, Pancreas Cancer
Conditions
Keywords
Malignant Biliary Stricture, Cell-Free Extrachromosomal Circular DNA (eccDNA), Liquid-Biopsies Assay
Brief summary
Biliary stricture is mainly malignant in the adults and caused by several types of fatal malignancies such as pancreatic cancer, cholangiocarcinoma, and metastatic tumor, which have poor prognosis that the overall survival of unresectable lesions is no more than 15 months. The poor outcome often relates to a lack of reliable strategies for early diagnosis, which results in most patients with malignant biliary stricture being already advanced-stage disease at presentation. Therefore, it is critical to discover novel and effective strategies for the early diagnosis of malignant biliary strictures. Brush cytology and biopsy during endoscopic retrograde cholangiopancreatography (ERCP) are the main methods for recognizing malignant diseases of the bile duct, but their sensitivity is relatively low, 45% and 48.1%, respectively. Even when combined with other biomarkers like carbohydrate antigen 19-9 (CA19-9), their sensitivity is still less than 80%. In the previous study, the investigators found that bcf-eccDNA has excellent diagnostic value in predicting uncertain bile duct stricture, and the sensitivity and specificity of a related eccDNA in 40 samples are 80.8% and 100%. The sensitivity and specificity of another eccDNA were 92.3% and 92.9%, respectively. However, the sample size is still relatively small, and further prospective studies are needed to evaluate its diagnostic efficacy.
Interventions
None listed
Sponsors
Beijing Tsinghua Changgeng Hospital
Peking University Third Hospital
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 85 Years
Healthy volunteers
No
Inclusion criteria
* Patients is suspected indetermined biliary strictures * Patients have the indication for ERCP
Exclusion criteria
* ERCP failed, or can not obtain bile * Sever comorbidities * Predicted overall survival less than 1 year because of other disease * Patients who are unlikely to comply with the protocol, inability to return for subsequent visits
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Patient is diagnosed with malignant disease from biliary system | in one year | Malignant tumor is confirmed by histopathology or cytopathology. If the pathology is unclear or inaccessible, 2 gastroenterologists will finally confirm the diagnosis of the bile duct stricture after 1 year follow-up. |
Countries
China
Contacts
Primary ContactYonghui Huang, M.D
Outcome results
None listed