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Advanced medullary thyroid cancer : pathophysiology and management

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Advanced medullary thyroid cancer : pathophysiology and management

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Título Advanced medullary thyroid cancer : pathophysiology and management
Autor Ferreira, Carla Vaz
Siqueira, Débora Rodrigues
Ceolin, Lucieli
Maia, Ana Luiza Silva
Abstract Medullary thyroid carcinoma (MTC) is a rare malignant tumor originating from thyroid parafollicular C cells. This tumor accounts for 3%–4% of thyroid gland neoplasias. MTC may occur sporadically or be inherited. Hereditary MTC appears as part of the multiple endocrine neoplasia syndrome type 2A or 2B, or familial medullary thyroid cancer. Germ-line mutations of the RET proto-oncogene cause hereditary forms of cancer, whereas somatic mutations can be present in sporadic forms of the disease. The RET gene encodes a receptor tyrosine kinase involved in the activation of intracellular signaling pathways leading to proliferation, growth, differentiation, migration, and survival. Nowadays, early diagnosis of MTC followed by total thyroidectomy offers the only possibility of cure. Based on the knowledge of the pathogenic mechanisms of MTC, new drugs have been developed in an attempt to control metastatic disease. Of these, small-molecule tyrosine kinase inhibitors represent one of the most promising agents for MTC treatment, and clinical trials have shown encouraging results. Hopefully, the cumulative knowledge about the targets of action of these drugs and about the tyrosine kinase inhibitor-associated side effects will help in choosing the best therapeutic approach to enhance their benefits.
Contido em Cancer management and research. [Auckland, N.Z.]. Vol. 5 (2013), p. 57-66
Assunto Carcinoma medular
Glândula tireóide
Proteínas proto-oncogênicas c-ret
Proteínas tirosina quinases
[en] Medullary thyroid carcinoma
[en] Proto-oncogene RET
[en] Tyrosine kinase inhibitors
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/111628
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