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OncoMatch/Clinical Trials/NCT06966232

Prophylactic or Preemptive Entecavir in Patients With Gastrointestinal Cancer Who Are Inactive Hepatitis B Carriers

Is NCT06966232 recruiting? Yes, currently enrolling (May 2026). This Phase 3 trial studies Entecavir for gastrointestinal cancers.

Phase 3RecruitingSun Yat-sen UniversityNCT06966232Data as of May 2026

Treatment: EntecavirThere has been no report on whether the patients with gastrointestinal cancer who are also inactive hepatitis B carriers should receive prophylactic use or preemptive use of an anti-viral drug entecavir during anti-tumor therapy. This open, multicentre, phase 3, randomized controlled clinical trial aims to compare the impact of the prophylactic use or preemptive use of an anti-viral drug entecavir on the outcomes of patients with gastrointestinal cancer who are also inactive hepatitis B carriers during chemotherapy or immunotherapy and the subsequent follow-ups, including two cohorts of chemotherapy and immunotherapy.

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Extracted eligibility criteria

Cancer type

Colorectal Cancer

Gastric Cancer

Hepatocellular Carcinoma

Pancreatic Cancer

Cholangiocarcinoma

Esophageal Carcinoma

Performance status

ECOG 0–2(Ambulatory, capable of self-care)

Prior therapy

Max 2 prior lines

Cannot have received: anti-HBV therapy

Received anti-HBV therapy for chronic hepatitis B within 6 months before enrollment

Lab requirements

Liver function

normal liver function tests including alanine aminotransferase (alt), aspartate aminotransferase alkaline (ast), and bilirubin

Structured fields extracted by AI. May contain errors — verify against the official protocol.

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