Ablation Combined With PD-1 in HCC: Phase II Study

Hepatocellular Carcinoma Clinical Trial

Official title: Phase II Study of Ablation Combined With PD-1 Antibody in Patients With Hepatocellular Carcinoma

Status Recruiting

Clinical Trial Summary

This is a Phase 2, single arm, single center study designed to evaluate the safety and tolerability of radiofrequency or microwave ablation combined with PD-1 monoclonal antibody in patients with hepatocellular carcinoma(HCC), with the secondary study objective to preliminarily evaluate the efficacy of radiofrequency or microwave ablation combined with PD-1 monoclonal antibody in patients with HCC and the exploratory study objective to evaluate the effect of ablation combined with PD-1 monoclonal antibody on immune function and hepatitis virus infection status in patients with HCC. This study will be divided into two stages, and the first stage is to enroll 6 patients for dose-limited toxicity (DLT) observation. If DLT appeared in < 2 patients, the second stage was entered and the other 24 patients were further enrolled.

Clinical Trial Description

The enrolled patients received intravenous injection of PD-1 monoclonal antibody (tirelizumab 200mg) on the day before ablation and the 21 (± 7) days, the 42 (+ 7) days and the 63 (+ 7) days after ablation, respectively (a total of 4 times). Liver tumor biopsy was performed during ablation, tissue samples will be stored for pathological examination and test of PD-L1 expression.

Liver enhanced MRI or CT and contrast-enhanced ultrasound were reviewed within 4 ~ 6 weeks after the first ablation treatment to evaluate the complete response rate of the tumor after treatment. Patients suspected of local incomplete ablation in either of the two examinations could receive a salvage ablation for once within 12 weeks of the first ablation, but no extra dose of PD-1 antibody would be given. Patients with residual viable tumor after re-ablation were defined as treatment failure.

The first six patients (stage I) underwent detailed physical examination on the 2nd, 7th, 14th and 21st days after receiving the first dose of study drug, and 30 days after the 2nd and 4th doses of study drugs. Blood tests and urine routine were performed on the 2nd day after treatment, as well as ECG examination. In the second stage, the patients underwent examinations on the second and 21st days after the dose of study drug, and on the 30 days after the last dose of study drug (the above examination can be carried out within ± 7 days). If there are clinically significant study related adverse events (including abnormal test results) in patients in stage I, necessary reexamination and visit would be added in patients in stage II.

Radiological evaluation arrangement: liver enhanced MRI or CT and contrast-enhanced ultrasound were performed within 4 ~ 6 weeks after the first ablation. The second imaging examination would be completed within 4 ~ 6 weeks after the end of the study treatment, and then examined according to the following schedule: CT / MRI was repeated every 3 months within the first year, then every 4 months within the next year, and every 6 months after 2 years. The investigators will evaluate the adverse events during the follow-up. After the patients have radiologically confirmed recurrence and/or metastasis, they will be treated according to the guideline without limitation. The information of all anti-cancer treatments they received need to be collected.

Follow-up by phone will be conducted at least every 6 months until death to find out the patient's survival data, as well as their physical condition and information about other anticancer treatment received. ;

Related Conditions & MeSH terms

• Carcinoma
• Carcinoma, Hepatocellular
• Hepatocellular Carcinoma

• NCT number: NCT04652440
• Study type: Interventional
• Source: Sun Yat-sen University
• Contact: Min-Shan Chen, Ph.D.
• Phone: +86-20-87343115
• Email: chenmsh@sysucc.org.cn
• Status: Recruiting
• Phase: Phase 1/Phase 2
• Start date: December 15, 2020
• Completion date: June 30, 2024