Clinical Trial

Intraarterial Therapies Plus Tislelizumab Plus Lenvatinib Versus Tislelizumab Plus Gemcitabine-Cisplatin in Unresectable Intrahepatic Cholangiocarcinoma

Study acronym: RAINBOW
Not Yet Recruiting Phase 3
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Summary
This is a phase III, multicenter, open-label, randomized controlled trial designed to evaluate the efficacy and safety of arterially directed therapy in combination with tislelizumab plus lenvatinib compared with gemcitabine and cisplatin (GEMCIS) in combination with tislelizumab as first-line treatment for patients with unresectable intrahepatic cholangiocarcinoma. Approximately 140 eligible patients with histologically confirmed unresectable intrahepatic cholangiocarcinoma without extrahepatic metastasis will be enrolled and randomized in a 1:1 ratio to receive either TACE plus tislelizumab and lenvatinib or GEMCIS plus tislelizumab. In the TACE-based treatment arm, hepatic arterial infusion chemotherapy with gemcitabine and cisplatin may be administered during or after TACE at the investigator's discretion according to the protocol. The primary endpoint is overall survival. Secondary endpoints include progression-free survival, time to progression, objective response rate, disease control rate, safety, and quality of life.
Protocol Amendment History 1 amendment
This ClinicalTrials.gov record has been amended once since 2026-06-30.
Trial Details
NCT Number NCT07691515
Lead Sponsor Zhejiang Cancer Hospital
Conditions Intrahepatic Cholangiocarcinoma (Icc)
Enrollment 140 participants
Start Date 2026-07
Primary Completion 2030-01 (estimated)
Study Completion 2030-07 (estimated)
Updated on ClinicalTrials.gov 2026-07-14