TY - JOUR
T1 - Anaplastic carcinoma of the thyroid arising more often from follicular carcinoma than papillary carcinoma
AU - Wang, Hwei Ming
AU - Huang, Yu Wen
AU - Huang, Jen Seng
AU - Wang, Cheng Hsu
AU - Kok, Victor C.
AU - Hung, Chao Ming
AU - Chen, Han Ming
AU - Tzen, Chin Yuan
PY - 2007/10
Y1 - 2007/10
N2 - Background: Anaplastic thyroid carcinoma (ATC), a rare and highly malignant tumor, has long been thought to arise from well-differentiated carcinoma (WDC) such as follicular thyroid carcinoma (FTC) and papillary thyroid carcinoma (PTC). The purpose of this study was to test this notion by examining whether and, if so, how often ATC harbors the oncogenes that are commonly associated with WDC, such as RAS in FTC and BRAF in PTC. Methods: We analyzed the mutation hotspots of BRAF (codon 600) and N-, K-, and H-RAS (codons 12, 13, and 61) in 16 ATCs. We also examined two genes, PIK3CA (exons 9 and 20) and TP53 (exons 5-9), both of which have been reported in ATCs. Results: The results showed that approximately 31% (5 of 16) of ATCs harbored N-RAS mutation, 6% (1 of 16) had mutated BRAF, and approximately 56% (9 of 16) had mutated TP53. As to the three ATCs that had coexisted PTCs, mutated BRAF was detected in all PTC components but only in one ATC, while mutated PIK3CA was found in only one PTC component but not in the ATC. Conclusion: A number of ATCs arise from WDCs, more often from RAS-mutant tumors than from BRAF-mutant tumors, implying that particular attention should be paid to the WDC harboring RAS mutation.
AB - Background: Anaplastic thyroid carcinoma (ATC), a rare and highly malignant tumor, has long been thought to arise from well-differentiated carcinoma (WDC) such as follicular thyroid carcinoma (FTC) and papillary thyroid carcinoma (PTC). The purpose of this study was to test this notion by examining whether and, if so, how often ATC harbors the oncogenes that are commonly associated with WDC, such as RAS in FTC and BRAF in PTC. Methods: We analyzed the mutation hotspots of BRAF (codon 600) and N-, K-, and H-RAS (codons 12, 13, and 61) in 16 ATCs. We also examined two genes, PIK3CA (exons 9 and 20) and TP53 (exons 5-9), both of which have been reported in ATCs. Results: The results showed that approximately 31% (5 of 16) of ATCs harbored N-RAS mutation, 6% (1 of 16) had mutated BRAF, and approximately 56% (9 of 16) had mutated TP53. As to the three ATCs that had coexisted PTCs, mutated BRAF was detected in all PTC components but only in one ATC, while mutated PIK3CA was found in only one PTC component but not in the ATC. Conclusion: A number of ATCs arise from WDCs, more often from RAS-mutant tumors than from BRAF-mutant tumors, implying that particular attention should be paid to the WDC harboring RAS mutation.
KW - Anaplastic thyroid carcinoma
KW - BRAF mutation
KW - Follicular thyroid carcinoma
KW - N-RAS mutation
KW - Papillary thyroid carcinoma
KW - TP53 mutation
UR - http://www.scopus.com/inward/record.url?scp=34648843695&partnerID=8YFLogxK
U2 - 10.1245/s10434-007-9503-8
DO - 10.1245/s10434-007-9503-8
M3 - 文章
C2 - 17638058
AN - SCOPUS:34648843695
SN - 1068-9265
VL - 14
SP - 3011
EP - 3018
JO - Annals of Surgical Oncology
JF - Annals of Surgical Oncology
IS - 10
ER -