PMID- 31244783 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200225 IS - 1664-2392 (Print) IS - 1664-2392 (Electronic) IS - 1664-2392 (Linking) VI - 10 DP - 2019 TI - Safety of Tyrosine Kinase Inhibitors in Patients With Differentiated Thyroid Cancer: Real-World Use of Lenvatinib and Sorafenib in Korea. PG - 384 LID - 10.3389/fendo.2019.00384 [doi] LID - 384 AB - Background: Thyroid cancer has become the most common cancer in Korea. Generally, thyroid cancer patients have a good prognosis; however, 15-20% of patients experience recurrence or distant metastasis or are refractory to standard treatment. We assessed the safety of sorafenib and lenvatinib in patients with advanced or metastatic radioactive iodine-refractory differentiated thyroid cancers (DTC) consecutively treated at a tertiary center in South Korea. Methods: We retrospectively reviewed the charts of all consecutive patients with DTC treated during >/=6 months with lenvatinib (February 2016-April 2018) and sorafenib (January 2014-April 2018) at Gangnam Severance Hospital. Patients were treated according to the prescribing information of each drug and were followed up for 2 months. We evaluated the adverse events (AEs) reported with each drug. Results: A total of 71 medical records (lenvatinib, n = 23; sorafenib, n = 48) were reviewed. The most common histological types were papillary thyroid cancer (69.0%) and follicular thyroid cancer (22.5%). All patients (n = 23) started lenvatinib at a dose of 20 mg; 41.7% of sorafenib-treated patients received an initial dose of 800 mg daily. Four (17.4%) lenvatinib-treated patients and 26 (54.2%) sorafenib-treated patients required treatment discontinuation. The most common AEs of any grade in the lenvatinib group were diarrhea (82.6%), hypertension (78.3%), hand-foot skin reaction (56.5%), weight loss (52.2%), proteinuria (47.8%), and anorexia (43.5%). In the sorafenib group, these were hand-foot skin reaction (87.5%), diarrhea (62.5%), anorexia (60.4%), alopecia (56.3%), mucositis (52.1%), weight loss and generalized weakness (each, 50%), and hypertension (43.8%). The incidence of hand-foot skin reaction, alopecia, and rash of any grade was significantly lower (P = 0.003, P = 0.017, and P = 0.017) in patients treated with lenvatinib compared with those treated with sorafenib. The incidence of hypertension, QT prolongation, and proteinuria of any grade was significantly higher (P = 0.006, P = 0.038, and P < 0.001) in patients treated with lenvatinib compared with those treated with sorafenib. Seven deaths occurred, which were attributed to disease progression. Conclusions: No new safety concerns were identified for either drug. Most AEs were managed with dose modification and medical therapy. AEs such as hypertension and proteinuria warrant close monitoring. FAU - Kim, Soo Young AU - Kim SY AD - Department of Surgery, Thyroid Cancer Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea. FAU - Kim, Seok-Mo AU - Kim SM AD - Department of Surgery, Thyroid Cancer Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea. FAU - Chang, Hojin AU - Chang H AD - Department of Surgery, Thyroid Cancer Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea. FAU - Kim, Bup-Woo AU - Kim BW AD - Department of Surgery, Thyroid Cancer Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea. FAU - Lee, Yong Sang AU - Lee YS AD - Department of Surgery, Thyroid Cancer Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea. FAU - Chang, Hang-Seok AU - Chang HS AD - Department of Surgery, Thyroid Cancer Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea. FAU - Park, Cheong Soo AU - Park CS AD - Department of Surgery, Thyroid Cancer Center, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea. LA - eng PT - Journal Article DEP - 20190612 PL - Switzerland TA - Front Endocrinol (Lausanne) JT - Frontiers in endocrinology JID - 101555782 PMC - PMC6581694 OTO - NOTNLM OT - adverse effects OT - chart review OT - differentiated thyroid cancer OT - lenvatinib OT - refractory thyroid cancer OT - safety OT - sorafenib OT - tyrosine kinase inhibitors EDAT- 2019/06/28 06:00 MHDA- 2019/06/28 06:01 PMCR- 2019/01/01 CRDT- 2019/06/28 06:00 PHST- 2019/01/24 00:00 [received] PHST- 2019/05/28 00:00 [accepted] PHST- 2019/06/28 06:00 [entrez] PHST- 2019/06/28 06:00 [pubmed] PHST- 2019/06/28 06:01 [medline] PHST- 2019/01/01 00:00 [pmc-release] AID - 10.3389/fendo.2019.00384 [doi] PST - epublish SO - Front Endocrinol (Lausanne). 2019 Jun 12;10:384. doi: 10.3389/fendo.2019.00384. eCollection 2019.