Frequency of TERT promoter mutations in primary tumors of the liver
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Frequency of TERT promoter mutations in primary tumors of the liver. / Quaas, Alexander; Oldopp, Theresa; Tharun, Lars; Klingenfeld, Catina; Krech, Till; Sauter, Guido; Grob, Tobias J.
in: VIRCHOWS ARCH, Jahrgang 465, Nr. 6, 12.2014, S. 673-7.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Frequency of TERT promoter mutations in primary tumors of the liver
AU - Quaas, Alexander
AU - Oldopp, Theresa
AU - Tharun, Lars
AU - Klingenfeld, Catina
AU - Krech, Till
AU - Sauter, Guido
AU - Grob, Tobias J
PY - 2014/12
Y1 - 2014/12
N2 - Transcriptional regulation of the TERT gene is a major cause of the cancer-specific increase in telomerase activity. Recently, frequent somatic mutations in the TERT promoter have been described in several tumor entities such as melanoma, glioblastoma, bladder cancer, and hepatocellular carcinoma. By generating a putative consensus binding site for ETS transcription factors within the TERT promoter, these mutations are predicted to increase promoter activity and TERT transcription. In order to improve the understanding of the role of TERT promoter mutation in liver tumorigenesis, the mutational status of the TERT promoter was analyzed in 78 hepatocellular carcinomas, 15 hepatocellular adenomas, and 52 intrahepatic cholangiocarciomas. The promoter region of TERT was screened for the two hotspot mutations using PCR and restriction fragment length analysis, utilizing the introduction of novel restriction sites by the somatic mutations. TERT promoter mutation was found in 37 of 78 hepatocellular carcinomas (47 %) and was restricted to the -124C>T mutation. Frequency of mutations was associated with grade of differentiation ranging from 39 % in well-differentiated tumors to 73 % in high-grade hepatocellular carcinomas. TERT promoter mutations were not found in 15 hepatocellular adenomas and 52 intrahepatic cholangiocarcinomas. These data show that TERT promoter mutation is the most frequent genetic alteration in hepatocellular carcinoma known at this time. The striking predominance of the -124C>T mutation compared with other tumor entities suggest a biological difference of the two hotspot mutations. Analysis of TERT promoter mutation might become a diagnostic tool distinguishing hepatocellular adenoma from well-differentiated hepatocellular carcinoma.
AB - Transcriptional regulation of the TERT gene is a major cause of the cancer-specific increase in telomerase activity. Recently, frequent somatic mutations in the TERT promoter have been described in several tumor entities such as melanoma, glioblastoma, bladder cancer, and hepatocellular carcinoma. By generating a putative consensus binding site for ETS transcription factors within the TERT promoter, these mutations are predicted to increase promoter activity and TERT transcription. In order to improve the understanding of the role of TERT promoter mutation in liver tumorigenesis, the mutational status of the TERT promoter was analyzed in 78 hepatocellular carcinomas, 15 hepatocellular adenomas, and 52 intrahepatic cholangiocarciomas. The promoter region of TERT was screened for the two hotspot mutations using PCR and restriction fragment length analysis, utilizing the introduction of novel restriction sites by the somatic mutations. TERT promoter mutation was found in 37 of 78 hepatocellular carcinomas (47 %) and was restricted to the -124C>T mutation. Frequency of mutations was associated with grade of differentiation ranging from 39 % in well-differentiated tumors to 73 % in high-grade hepatocellular carcinomas. TERT promoter mutations were not found in 15 hepatocellular adenomas and 52 intrahepatic cholangiocarcinomas. These data show that TERT promoter mutation is the most frequent genetic alteration in hepatocellular carcinoma known at this time. The striking predominance of the -124C>T mutation compared with other tumor entities suggest a biological difference of the two hotspot mutations. Analysis of TERT promoter mutation might become a diagnostic tool distinguishing hepatocellular adenoma from well-differentiated hepatocellular carcinoma.
KW - Adenoma
KW - Adolescent
KW - Adult
KW - Aged
KW - Bile Duct Neoplasms
KW - Bile Ducts, Intrahepatic
KW - Carcinoma, Hepatocellular
KW - Child
KW - Cholangiocarcinoma
KW - DNA Mutational Analysis
KW - Female
KW - Humans
KW - Liver Neoplasms
KW - Male
KW - Middle Aged
KW - Mutation
KW - Polymerase Chain Reaction
KW - Polymorphism, Restriction Fragment Length
KW - Promoter Regions, Genetic
KW - Telomerase
KW - Young Adult
U2 - 10.1007/s00428-014-1658-7
DO - 10.1007/s00428-014-1658-7
M3 - SCORING: Journal article
C2 - 25267585
VL - 465
SP - 673
EP - 677
JO - VIRCHOWS ARCH
JF - VIRCHOWS ARCH
SN - 0945-6317
IS - 6
ER -