Cell-Surface Plectin in the Diagnosis of Cholangiocarcinoma from ERCP-directed Biliary Samples

January 28, 2025 updated by: Ross Buerlein, University of Virginia
Cholangiocarcinoma is a malignancy that is most-often diagnosed with ERCP-directed cytology brushings of the biliary tree, but the yield on this cytology has been previously shown to only be 5%-40%. Additionally, the vast majority (approximately 80%) of patients are not diagnosed until they are surgically unresectable (due to late stage at time of diagnosis), at which point there is no chance for cure and their only options are palliative. Therefore, better diagnostic modalities are needed. Plectin is a structural protein located inside of most cells, but it has been shown to be expressed on the cell surface of malignant cells in the pancreaticobiliary tract. The investigators hypothesize that ERCP-guided biliary samples can provide cells and immunohistochemical staining can detect cell surface plectin in patients with cholangiocarcinoma. This would be a novel diagnostic tool which could greatly reduce the time to diagnosis. A previously performed study pilot study at the University of Virginia (unpublished) showed that ERCP-directed biliary biopsies in patients with known cholangiocarcinoma had positive plectin immunohistochemistry, thus showing this is possible. In this current study, patients with a biliary stricture or tumor who are already undergoing ERCP as part of their routine clinical care (i.e. no procedures will be done exclusively for this research study) will undergo an additional biopsy and/or brushing to be assessed for cell-surface plectin expression via immunohistochemistry. The investigators hypothesize that plectin immunohistochemistry will have a higher sensitivity for cholangiocarcinoma than biopsies and/or brushings (cytology) alone.

Study Overview

Status

Not yet recruiting

Conditions

Study Type

Observational

Enrollment (Estimated)

100

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • United States
    • Virginia
      • Charlottesville, Virginia, United States, 22903
        • University of Virginia

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

Patients with indeterminate biliary strictures or masses who are already undergoing ERCP with biliary tissue sampling in the form of biliary brushings or biopsies

Description

Inclusion Criteria:

  • Biliary stricture or mass seen on imaging; already undergoing ERCP as part of their routine clinical care

Exclusion Criteria:

  • Age < 18 years old; inability to consent

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Positive plectin staining on IHC from ERCP-directed biliary samples
Time Frame: 2 years
Positive plectin staining on IHC from ERCP-directed biliary samples
2 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Virginia

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

February 1, 2025

Primary Completion (Estimated)

October 31, 2026

Study Completion (Estimated)

January 1, 2027

Study Registration Dates

First Submitted

October 18, 2024

First Submitted That Met QC Criteria

October 18, 2024

First Posted (Actual)

October 21, 2024

Study Record Updates

Last Update Posted (Actual)

March 25, 2025

Last Update Submitted That Met QC Criteria

January 28, 2025

Last Verified

January 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • HSR240084

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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