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Nivolumab (Anti-PD1), Tadalafil and Oral Vancomycin in People With Refractory Primary Hepatocellular Carcinoma or Liver Dominant Metastatic Cancer From Colorectal or Pancreatic Cancers

NCT03785210 · Status: TERMINATED · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 22

Last updated 2026-02-23

Study results available
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Summary

Background:

A most common liver cancer in adults is hepatocellular carcinoma. Other kinds of liver cancer happen when colorectal or pancreatic cancer spreads to the liver. Researchers want to study if a combination of drugs helps people with these cancers. The drugs are nivolumab, tadalafil, and vancomycin.

Objective:

To investigate if nivolumab given with tadalafil and vancomycin causes liver cancer to shrink.

Eligibility:

Adults ages 18 years and older with hepatocellular carcinoma or metastases to the liver from colorectal or pancreatic cancer for which standard treatment has not worked

Design:

Participants will be screened with:

Medical and cancer history

Review of symptoms and ability to perform normal activities

Physical exam

Heart test. Some participants may meet with a cardiologist and/or have another heart test.

Scan of the chest, abdomen, and pelvis

Blood and urine tests

Tumor sample review. This can be from a previous procedure.

Participants will receive the study drugs in 4-week cycles. In each cycle participants will:

Get nivolumab through a small plastic tube in the arm on Day 1.

Take tadalafil by mouth 1 time every day.

Take vancomycin by mouth 4 times a day. They will take it every day for weeks 1 3, then not take it for week 4.

Complete a medicine diary of dates, times, missed doses and symptoms.

Throughout the study, participants will repeat screening tests and will give stool samples or rectal swabs.

After their last cycle, participants will have 3 follow-up visits over 3 months. Then they will be contacted every 6 months by phone or email and asked about their general well-being.

...

Conditions

Interventions

DRUG

nivolumab

480 mg intravenous (IV) every 4 weeks

DRUG

tadalafil

10 mg by mouth (PO) daily

DRUG

oral vancomycin

125 mg every 6-hour (500 mg total daily dose) by mouth (PO) from week 1 to week 3, week 4 off.

Sponsors & Collaborators

  • National Cancer Institute (NCI)

    lead NIH

Principal Investigators

  • Tim F Greten, M.D. · National Cancer Institute (NCI)

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2019-06-05
Primary Completion
2022-10-31
Completion
2022-12-31
FDA Drug
Yes

Countries

  • United States

Study Locations

More Related Trials

Entities

Drugs
Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03785210 on ClinicalTrials.gov