Axitinib is an Active Treatment for All Histologic Subtypes of Advanced Thyroid Cancer: Results from a Phase II Study
Overview
Authors
Affiliations
Purpose: Patients with advanced, incurable thyroid cancer not amenable to surgery or radioactive iodine ((131)I) therapy have few satisfactory therapeutic options. This multi-institutional study assessed the activity and safety of axitinib, an oral, potent, and selective inhibitor of vascular endothelial growth factor receptors (VEGFR) 1, 2, and 3 in patients with advanced thyroid cancer.
Patients And Methods: Patients with thyroid cancer of any histology that was resistant or not appropriate for (131)I were enrolled onto a single-arm phase II trial to receive axitinib orally (starting dose, 5 mg twice daily). Objective response rate (ORR) by Response Evaluation Criteria in Solid Tumors was the primary end point. Secondary end points included duration of response, progression-free survival (PFS), overall survival, safety, and modulation of soluble (s) VEGFR.
Results: Sixty patients were enrolled. Partial responses were observed in 18 patients, yielding an ORR of 30% (95% CI, 18.9 to 43.2). Stable disease lasting > or = 16 weeks was reported in another 23 patients (38%).
Objective: responses were noted in all histologic subtypes. Median PFS was 18.1 months (95% CI, 12.1 to not estimable). Axitinib was generally well tolerated, with the most common grade > or = 3 treatment-related adverse event being hypertension (n = 7; 12%). Eight patients (13%) discontinued treatment because of adverse events. Axitinib selectively decreased sVEGFR-2 and sVEGFR-3 plasma concentrations versus sKIT, demonstrating its targeting of VEGFR.
Conclusion: Axitinib is a selective inhibitor of VEGFR with compelling antitumor activity in all histologic subtypes of advanced thyroid cancer.
A Review of FDA-Approved Multi-Target Angiogenesis Drugs for Brain Tumor Therapy.
Buzatu I, Tataranu L, Duta C, Stoian I, Alexandru O, Dricu A Int J Mol Sci. 2025; 26(5).
PMID: 40076810 PMC: 11899917. DOI: 10.3390/ijms26052192.
State of Knowledge About Thyroid Cancers in the Era of COVID-19-A Narrative Review.
Bronowicka-Szydelko A, Rabczynski M, Dumas I, Fiodorenko-Dumas Z, Wojtczak B, Kotyra L Biomedicines. 2025; 12(12.
PMID: 39767735 PMC: 11672969. DOI: 10.3390/biomedicines12122829.
SEOM-GETNE-TTCC Clinical guideline thyroid cancer (2023).
Alonso-Gordoa T, Jimenez-Fonseca P, Martinez-Trufero J, Navarro M, Porras I, Rubio-Casadevall J Clin Transl Oncol. 2024; 26(11):2902-2916.
PMID: 39325263 PMC: 11467120. DOI: 10.1007/s12094-024-03736-6.
Woll P, Gaunt P, Gaskell C, Young R, Benson C, Judson I Br J Cancer. 2023; 129(9):1490-1499.
PMID: 37684354 PMC: 10628187. DOI: 10.1038/s41416-023-02416-6.
Gunda V, Ghosh C, Hu J, Zhang L, Zhang Y, Shen M Thyroid. 2023; 33(10):1201-1214.
PMID: 37675898 PMC: 10625471. DOI: 10.1089/thy.2023.0201.