Tyrosine kinase inhibitors for radioiodine refractory differentiated thyroid cancer: A systematic review and meta‐analysis

Author:

Yu Jiayi1,Liu Zheran2,Su Yonglin3,Peng Xingchen2ORCID,Xie Yuping1

Affiliation:

1. Department of oncology, West China School of Public Health and West China Fourth Hospital Sichuan University Chengdu P. R. China

2. Department of Biotherapy, Cancer Center, West China Hospital Sichuan University Chengdu Sichuan China

3. Department of Rehabilitation, West China Hospital Sichuan University Chengdu China

Abstract

AbstractBackgroundThe poor overall prognosis of radioiodine refractory thyroid cancer is an inevitable challenge in managing this disease. A series of trials have demonstrated the antitumor activity of tyrosine kinase inhibitors (TKIs) in radioiodine refractory differentiated thyroid cancer (RAIR‐DTC). However, the available evidence cannot determine the optimal choice of TKI in RAIR‐DTC.MethodsThis study searched PubMed, EMBASE, Cochrane databases, and the ClinicalTrials website. The Cochrane bias risk tool was used to assess the risk of bias, and to evaluate randomized clinical trials (RCT) of RAIR‐DTC patients treated with the TKI system. Outcomes, including progression‐free survival (PFS), overall survival (OS), and adverse events (AEs) were reported.ResultsSeven studies involving 1310 patients with RAIR‐DTC was conducted to compare the PFS and OS of various TKI monotherapies with placebo. The results showed that all TKI monotherapies had a statistically significant benefit in terms of PFS compared with placebo, with lenvatinib demonstrating the greatest benefit (hazard ratio [HR] 0.19, 95% credible interval [CrI] 0.14–0.25). In terms of OS, only apatinib (HR 0.42, 95% CrI 0.18–0.97) and anlotinib (HR 0.36, 95% CrI 0.18–0.73) showed statistically significant benefits compared with placebo. TKIs also had a higher incidence of AEs of grade 3 or higher compared with placebo. The findings suggest that lenvatinib may be the preferred TKI for the treatment of RAIR‐DTC, although its high incidence of AEs should be considered. The results also indicate that TKI treatment may be similarly effective in RAIR‐DTC patients with BRAF or RAS mutations and in those with papillary or follicular subtypes of the disease, regardless of prior TKI treatment.ConclusionsThe results of this meta‐analysis suggest that targeted therapy with TKIs may be beneficial for patients with radioiodine‐refractory advanced or metastatic differentiated thyroid cancer. Among the TKIs analyzed, lenvatinib appeared to be the most effective at improving PFS, although it also had the highest incidence of AEs. Further research through direct randomized controlled trials is needed to determine the optimal choice of TKI for treating patients with RAIR‐DTC. This study is beneficial for formulating patients' treatment plans and guides clinicians' decision‐making.

Funder

National Natural Science Foundation of China

Publisher

Wiley

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