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The multi-kinase inhibitor tinengotinib as monotherapy or combined with atezolizumab in advanced solid tumors: a
Panpan Zhang1, Zuoxing Niu2, Hongqian Guo3
1Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Early Drug Development Centre, Peking University Cancer Hospital & Institute, Beijing, 100142, China.
Abstract:
Tinengotinib is a spectrum-selective multi-kinase inhibitor targeting FGFR1-3, JAK1/2, VEGFRs, and Aurora A/B kinases. This phase Ib/II clinical trial ( NCT05253053 ) evaluated tinengotinib as monotherapy (Arm A, n = 53, in Chinese patients with advanced solid tumors) and in combination with atezolizumab (Arm B, n = 31, in patients with advanced biliary tract cancer). Each arm comprised a dose-escalation phase with standard 3 + 3 design (phase Ib) followed by a dose-expansion phase (phase II). The primary endpoints of the phase Ib were safety, tolerability, dose-limiting toxicity (DLT), maximum tolerated dose (MTD), and dose selection for expansion, with secondary endpoints of efficacy (phase II) and pharmacokinetics. The trial met pre-specified primary endpoints: tinengotinib was well tolerated without DLTs, and MTD was not reached. Tinengotinib demonstrated antitumor activity both as monotherapy (objective response rate [ORR]: 16.7% in Arm A) and combined with atezolizumab (ORR: 22.6% in Arm B). In predefined exploratory subgroup analysis, notable efficacy was observed in cholangiocarcinoma (ORR: 30.8% in Arm A [n = 13]; 25.0% in Arm B [n = 28]). Tinengotinib monotherapy achieved favorable response in cholangiocarcinoma harboring FGFR2 fusion progressing on prior FGFR inhibitor (ORR: 66.7%). In patients with cholangiocarcinoma previously treated with immune checkpoint inhibitors (n = 20), the combination regimen achieved an ORR of 20.0% and a disease control rate of 75.0%. These findings support further development of tinengotinib, both as monotherapy and in combination with immunotherapy.
Insights
Tinengotinib, a multi-kinase inhibitor, showed good safety and antitumor activity in advanced solid tumors. It demonstrated promise in cholangiocarcinoma, especially when combined with atezolizumab.
Area of Science:
- Oncology
- Pharmacology
- Clinical Trials
Background:
- Tinengotinib is a novel multi-kinase inhibitor targeting FGFR, JAK, VEGFR, and Aurora kinases.
- Advanced solid tumors, particularly biliary tract cancer, present significant treatment challenges.
Purpose of the Study:
- To evaluate the safety, tolerability, and efficacy of tinengotinib as monotherapy and in combination with atezolizumab.
- To determine the maximum tolerated dose (MTD) and select doses for phase II expansion.
Main Methods:
- A phase Ib/II clinical trial (NCT05253053) with dose-escalation and expansion phases.
- Tinengotinib was administered as monotherapy (Arm A) or combined with atezolizumab (Arm B) in patients with advanced solid tumors and biliary tract cancer.
Main Results:
- Tinengotinib was well-tolerated, with no dose-limiting toxicities (DLTs) or MTD reached.
- Objective response rates (ORR) were 16.7% for tinengotinib monotherapy and 22.6% for the combination regimen.
- Notable efficacy was observed in cholangiocarcinoma, with ORRs of 30.8% (monotherapy) and 25.0% (combination).
Conclusions:
- Tinengotinib is safe and demonstrates antitumor activity in advanced solid tumors.
- The combination of tinengotinib and atezolizumab shows potential for treating biliary tract cancer, supporting further clinical development.
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