The preliminary report about the efficacy and safety evaluation of apatinib in progressive radioactive iodine-refractory differentiated thyroid cancer within 8 weeks
林岩松, 王 宸, 李 慧. The preliminary report about the efficacy and safety evaluation of apatinib in progressive radioactive iodine-refractory differentiated thyroid cancer within 8 weeks[J]. China Oncology, 2016, 26(9): 721-726.
林岩松, 王 宸, 李 慧. The preliminary report about the efficacy and safety evaluation of apatinib in progressive radioactive iodine-refractory differentiated thyroid cancer within 8 weeks[J]. China Oncology, 2016, 26(9): 721-726. DOI: 10.19401/j.cnki.1007-3639.2016.09.001.
Background and purpose: Radioactive iodine-refractory differentiated thyroid cancer (RAIR-DTC) is a big challenge in the management of thyroid cancer. Sorafenib and lenvatinib are the 2 tyrosine kinase inhibitors (TKIs) recently approved by FDA
which could not be affordable for most of the Chinese patients. This pilot study aimed to evaluate the short term efficacy and safety of apatinib
a Chinese domestic TKI targeted vascular endothelial growth factor receptor (VEGFR)
in advanced RAIR-DTC. Methods: Ten patients who were identified as progressive RAIR-DTC were enrolled in this study. Patients received oral apatinib 750 mg once daily. Both thyroglobulin (Tg) and/or Tg antibody (TgAb) levels were monitored every 2 weeks after the treatment. Computed tomography (CT) was performed every 4 weeks after apatinib treatment to evaluate the response according to response evaluation criteria in solid tumor version 1.1 (RECIST 1.1). Within 8 weeks after apatinib treatment
therapeutic response was evaluated in terms of Tg
a sensitive biochemical tumor marker for DTC
and RECIST 1.1 assessment. Meanwhile
the adverse events (AE) were monitored during the therapy. Results: The Tg levels declined after the first 2 weeks of apatinib treatment
and a mean decline rate of 68% could be observed in 8 patients with Tg available for evaluation after 8 weeks
which repre-sented a biochemical partial response. Eighteen target lesions (TL) of 10 patients were evaluated and followed up. The diameter of TL began to decrease after 4 weeks
and a mean decline of 40% could be observed after 8 weeks’ apatinib treatment. A total of 9 patients (9/10) achieved partial response according to RECIST 1.1 criteria and 1 patient with stable disease
with 90% objective response rate and 100% disease control rate. The most common AE beyond grade 3 included hand-foot-skin reactions
hypertension and hypocalcemia
which accounted for 50%
30% and 20% of the cases
respectively. No severe AE related to apatinib was observed during the treatment. Conclusion: A safe and rapid response and high partial response rate in terms of biochemistry
RECIST 1.1 could be observed in RAIR-DTC patients within 8 weeks of apatinib treatment.