Unresectable Hepatocellular Carcinoma: Tislelizumab as Effective First-Line Alternative to Sorafenib

RATIONALE 301 Phase III Clinical Trial Results

• September 2, 2022
• Reading time: 1 minute

On August 9, 2022, Beigene Ltd released a press statement announcing the results of the RATIONALE 301 Phase III clinical trial evaluating the efficacy and safety of tislelizumab monotherapy in treatment-naive patients with unresectable hepatocellular carcinoma, with overall survival as the primary efficacy endpoint.

Trial Design and Patient Population

RATIONALE 301 was an international, multi-institutional, randomized Phase III clinical trial enrolling patients with unresectable hepatocellular carcinoma. Patients were randomly assigned to:

• Tislelizumab Group
• Sorafenib Control Group

Primary endpoint: overall survival

Secondary endpoints: objective response rate, progression-free survival, and duration of response

Clinical Trial Results

Overall Survival - Primary Endpoint:

The tislelizumab group achieved overall survival outcomes that were non-inferior to the sorafenib control group, meeting the primary trial efficacy objective.

Safety Profile

The safety profile of tislelizumab was consistent with the established safety database from prior clinical trials. No novel or unexpected adverse events were identified in this trial.

Clinical Significance

According to Mark Lanasa, Chief Medical Officer of Beigene Ltd:

"Unresectable hepatocellular carcinoma represents a malignancy with generally poor prognosis, with median survival of approximately one year. A subset of patients cannot tolerate tyrosine kinase inhibitor-based approaches, thus restricting therapeutic options. The RATIONALE 301 trial demonstrates favorable clinical outcomes, with potential to establish tislelizumab as a new therapeutic option for this patient population."

Data Source

Beigene Ltd Press Release: https://ir.beigene.com/news-details/?id=65d92c44-3f6f-4a00-9433-52c144854bbc

Related Hepatocellular Carcinoma Treatment

• Immunotherapy
• Clinical Trial Therapeutics
  • (Lung Cancer) Topotecan and Topotecan Plus Berzosertib Phase II Trial Results
  • (Lung Cancer) HER2-Mutant Non-Small Cell Lung Cancer Treatment with Enhertu
  • (Lung Cancer) Anti-B7-H3 Antibody DS-7300 Clinical Efficacy

Medical Supporter was formerly certified as an international medical visa guarantor by Japan's Ministry of Foreign Affairs and the Ministry of Economy, Trade and Industry (B-066).

Figure 1

Figure 2

Figure 3

Figure 4