How molecular pathology is changing and will change the therapeutics of patients with follicular cell-derived thyroid cancer.
Well-differentiated thyroid carcinomas comprise two well-defined histological types: papillary and follicular (PTCs and FTCs, respectively). Despite being derived from the same cell (thyroid follicular cell), these two types of tumour accumulate distinct genetic abnormalities during progression. The molecular pathology of thyroid cancer is now better understood because of our ability to identify RET/PTC rearrangements and BRAF mutations in the aetiopathogenesis of the large majority of PTCs and the high prevalence of RAS mutations and PAX8/PPARgamma rearrangements in follicular patterned carcinomas (FTCs and follicular variant of PTCs). This review summarises most of the molecular alterations currently used as targets for new biological treatments and looks at some of the changes that are already occurring or may occur in the treatment of patients with thyroid cancer. For simplicity, the review is divided up according to the major genetic alterations identified in well-differentiated thyroid carcinomas (RET/PTC rearrangements, BRAF mutations, RAS mutations and mitochondrial DNA deletions and mutations) and their respective treatments.
Couto
J Pinto
JP
IPATIMUP (Institute of Molecular Pathology and Immunology of the University of Porto) Porto, Portugal.
Prazeres
H
H
Castro
P
P
Lima
J
J
Máximo
V
V
Soares
P
P
Sobrinho-Simões
M
M
D018263:Adenocarcinoma, Follicular / Q000188:drug therapy / Q000235:genetics*; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D002291:Carcinoma, Papillary / Q000188:drug therapy / Q000235:genetics*; D004272:DNA, Mitochondrial / Q000235:genetics; D015321:Gene Rearrangement; D006801:Humans; D009154:Mutation; D048493:Proto-Oncogene Proteins B-raf / Q000235:genetics; D051096:Proto-Oncogene Proteins c-ret / Q000235:genetics; D013964:Thyroid Neoplasms / Q000188:drug therapy / Q000235:genetics*; D018631:ras Proteins / Q000235:genetics
D000970:Antineoplastic Agents; D004272:DNA, Mitochondrial; D051096:Proto-Oncogene Proteins c-ret; C099282:RET protein, human; C482119:BRAF protein, human; D048493:Proto-Oncogene Proteins B-raf; D018631:ras Proteins