Phase 1b trial of anti-VEGF/PDGFR vorolanib combined with immune checkpoint inhibitors in patients with advanced solid tumors
- PMID: 35247086
- PMCID: PMC8956523
- DOI: 10.1007/s00280-022-04406-6
Phase 1b trial of anti-VEGF/PDGFR vorolanib combined with immune checkpoint inhibitors in patients with advanced solid tumors
Abstract
Purpose: Vorolanib is a multi-target tyrosine kinase inhibitor with anti-angiogenic properties. This study aimed to evaluate the tolerability, safety and efficacy of vorolanib when added to checkpoint inhibitors (CPIs) in patients with advanced solid tumors.
Methods: We conducted a phase 1b study of vorolanib (300 or 400 mg orally once daily) plus pembrolizumab or nivolumab using a standard 3 + 3 design to determine the dose-limiting toxicity (DLT), maximum tolerated dose (MTD) and recommended phase 2 dose (RP2D). The endpoints included safety, toxicity and objective response rate, according to Response Evaluation Criteria in Solid Tumors, version 1.1 (RECIST 1.1).
Results: Sixteen patients (9 in pembrolizumab arm, 7 in nivolumab arm) with gastrointestinal or lung cancers were enrolled. All patients had at least 1 treatment-related adverse event (TRAE). The most common TRAEs across all cohorts were lymphopenia (n = 7), leukopenia (n = 5), fatigue (n = 5), and alanine aminotransferase elevation (n = 5); most toxicities were grade (G) 1-2. DLTs were reported in 3 patients at vorolanib 400 mg dose level, with G3 aspartate aminotransferase elevation, G3 rectal hemorrhage, and G3 rash. Of 13 total response-evaluable patients, 2 patients had confirmed partial responses (1 rectal squamous cell cancer and 1 small cell lung cancer). Two patients achieved prolonged stable disease. Vorolanib 300 mg daily was determined to be the RP2D for either pembrolizumab or nivolumab.
Conclusion: Combination vorolanib 300 mg orally once daily plus CPI appears to be a feasible regimen with manageable toxicity and promising efficacy in select tumor types. NCT03511222. Date of Registration: April 18, 2018.
Keywords: Advanced solid tumors; Checkpoint inhibitors; Immunotherapy; Nivolumab; Pembrolizumab; Vorolanib.
© 2022. The Author(s).
Conflict of interest statement
The following represents disclosure information provided by authors of this manuscript. Saiama N. Waqar reports funding from SWOG-Clinical Trials Partnership for oversight of the Lung-MAP master protocol and sub-study activities as co-Principal Investigator, and serves as Chair of Data Safety Monitoring Board for a Hoosier Cancer Research Network study. On behalf of all authors, the corresponding author states that there is no conflict of interest.
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References
-
- Janjigian YY, Shitara K, Moehler M, et al. First-line nivolumab plus chemotherapy versus chemotherapy alone for advanced gastric, gastro-oesophageal junction and oesophageal adenocarcinoma (CheckMate 649): a randomized, open-label, phase 3 trial. Lancet. 2021;398(10294):27–40. doi: 10.1016/S0140-6736(21)00797-2. - DOI - PMC - PubMed
-
- Langer CJ, Gadgeel SM, Borghaei H, et al. Carboplatin and pemetrexed with or without pembrolizumab for advanced, non-squamous non-small-cell lung cancer: a randomized, phase 2 cohort of the open-label KEYNOTE-021 study. Lancet Oncol. 2016;17(11):1497–1508. doi: 10.1016/S1470-2045(16)30498-3. - DOI - PMC - PubMed
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