Response to sorafenib treatment in advanced metastatic thyroid cancer

• Autor(a) principal: Pitoia,Fabian
• Data de Publicação: 2014
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Arquivos Brasileiros de Endocrinologia & Metabologia (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-27302014000100037
• topic: Metastasis; sorafenib; thyroid; cancer

Objective: To investigate the efficacy of sorafenib in progressive radioiodine resistant metastatic thyroid carcinoma.Subjects and methods: Off-label observational study. Sorafenib 400 mg twice daily was evaluated. Therapy duration was 12 ± 3 months (range 6-16 months).Results: Eight patients were included (seven papillary, one insular variant). The eight patients meeting study criteria received sorafenib 400 mg orally twice a day until disease progression or unacceptable toxicity developed. One patient showed a partial response with tumor regression of -35%, six months after the beginning of the treatment; five patients exhibited stable disease and two patients had progressive disease and died. Thyroglobulin decreased within 4 weeks in all patients by 50% ± 23%.Adverse events: one patient had heart failure, and recovered after sorafenib withdrawal. However, she died five months later of sudden death.Conclusion: These data suggest a possible role for sorafenib in the treatment of progressive metastatic DTC. Adverse event are usually manageable, but severe ones may appear and these patients should be strictly controlled.