PMID- 36852694 OWN - NLM STAT- MEDLINE DCOM- 20230612 LR - 20231103 IS - 2235-0640 (Print) IS - 2235-0802 (Electronic) IS - 2235-0640 (Linking) VI - 12 IP - 2 DP - 2023 Apr 1 TI - Outcomes of lenvatinib therapy in poorly differentiated thyroid carcinoma. LID - e230003 [pii] LID - 10.1530/ETJ-23-0003 [doi] AB - BACKGROUND AND OBJECTIVE: Lenvatinib showed promising results in a subgroup of patients with poorly differentiated thyroid carcinoma (PDTC) in the SELECT trial. Our aim was to report the effectiveness and tolerability of lenvatinib in our series of PDTC patients. METHODS: Medical records of eight consecutive patients with PDTC treated with lenvatinib in a single center between January 2019 and October 2022 were retrospectively reviewed. Inclusion criteria were PDTC diagnosis based on Turin criteria and evidence of disease progression in the previous 6 months. RESULTS: Eight PDTC patients received an average dose of lenvatinib of 18.1 mg for a median duration of treatment of 10.3 months. The baseline Eastern Cooperative Oncology Group performance status was >/=2 in 50% of patients. Two patients had unresectable primary tumor. Seven patients showed extrathyroidal disease, particularly mediastinal lymph nodes (85.7%), lung (71.4%), and bone (71.4%). The disease control rate was 100%, with partial response and stable disease in 12.5 and 87.5%, respectively. The median time to best overall response was 3 months, and the median duration of response was 7.5 months. Median progression-free survival was 12 months and median overall survival was not reached. At 6, 12, and 18 months, overall survival was 87.5, 71.4, and 57.1%, respectively. All patients experienced drug-related adverse effects (AEs). Four (50%) had dose reductions and two (25%) had temporary treatment interruptions. Lenvatinib was stopped in two patients due to grade >/=3 AEs. CONCLUSION: Lenvatinib is an effective treatment for real-world PDTC patients. Adequate management of comorbidities and AEs increases treatment tolerability and minimizes dose reductions. FAU - Roque, Joao AU - Roque J AUID- ORCID: 0000-0002-1191-4997 AD - Endocrinology, Diabetes and Metabolism Department, Centro Hospitalar Universitario Lisboa Norte, Hospital de Santa Maria, Lisbon, Portugal. FAU - Nunes Silva, Tiago AU - Nunes Silva T AD - Endocrinology, Diabetes and Metabolism Department, Instituto Portugues de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal. AD - NOVA Medical School | Faculdade de Ciencias Medicas of Universidade NOVA de Lisboa, Lisbon, Portugal. AD - Unidade Investigacao Patobiologia Molecular, Instituto Portugues de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal. FAU - Regala, Catarina AU - Regala C AD - Endocrinology, Diabetes and Metabolism Department, Instituto Portugues de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal. FAU - Rodrigues, Ricardo AU - Rodrigues R AUID- ORCID: 0000-0003-1928-4106 AD - Unidade Investigacao Patobiologia Molecular, Instituto Portugues de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal. FAU - Leite, Valeriano AU - Leite V AD - Endocrinology, Diabetes and Metabolism Department, Instituto Portugues de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal. AD - NOVA Medical School | Faculdade de Ciencias Medicas of Universidade NOVA de Lisboa, Lisbon, Portugal. AD - Unidade Investigacao Patobiologia Molecular, Instituto Portugues de Oncologia de Lisboa Francisco Gentil, Lisbon, Portugal. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230328 PL - England TA - Eur Thyroid J JT - European thyroid journal JID - 101604579 RN - EE083865G2 (lenvatinib) RN - 0 (Antineoplastic Agents) RN - 135467-92-4 (prolinedithiocarbamate) MH - Humans MH - *Antineoplastic Agents/adverse effects MH - Retrospective Studies MH - *Thyroid Neoplasms/drug therapy MH - *Adenocarcinoma/chemically induced PMC - PMC10083649 OTO - NOTNLM OT - effectiveness OT - lenvatinib OT - outcomes OT - poorly differentiated thyroid carcinoma COIS- There is no conflict of interest that could be perceived as prejudicing the impartiality of the research reported. EDAT- 2023/03/01 06:00 MHDA- 2023/03/01 06:01 PMCR- 2023/03/28 CRDT- 2023/02/28 05:12 PHST- 2023/02/20 00:00 [received] PHST- 2023/02/27 00:00 [accepted] PHST- 2023/03/01 06:01 [medline] PHST- 2023/03/01 06:00 [pubmed] PHST- 2023/02/28 05:12 [entrez] PHST- 2023/03/28 00:00 [pmc-release] AID - e230003 [pii] AID - ETJ-23-0003 [pii] AID - 10.1530/ETJ-23-0003 [doi] PST - epublish SO - Eur Thyroid J. 2023 Mar 28;12(2):e230003. doi: 10.1530/ETJ-23-0003. Print 2023 Apr 1.