Article (Scientific journals)
Presence of TERT Promoter Mutations is a Secondary Event and Associates with Elongated Telomere Length in Myxoid Liposarcomas.
Ferreira, Monica S. Ventura; Crysandt, Martina; Braunschweig, Till et al.
2018In International Journal of Molecular Sciences, 19 (2)
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Keywords :
Base Sequence; Bone Neoplasms/genetics; Female; Humans; In Situ Hybridization, Fluorescence; Liposarcoma, Myxoid/genetics; Male; Middle Aged; Mutation/genetics; Neoplasm Grading; Promoter Regions, Genetic; Sarcoma/genetics; Telomerase/genetics; Telomere/metabolism; TERT promoter mutation; myxoid liposarcoma; sarcoma; telomerase; telomere
Abstract :
[en] The occurrence of TERT promoter mutations has been well described in soft tissue sarcomas (STS). However, the biological role of these mutations as well as their impact on telomere length in STS is still unclear. We analyzed 116 patient samples diagnosed with 22 distinct histological subtypes of bone and STS for the occurrence of TERT promoter mutations by Sanger sequencing. We observed TERT promoter mutations at an overall frequency of 9.5% distributed over 7 different sarcoma subtypes. Except for one chondrosarcoma case harboring a C250T mutation, all other mutations were detected at location C228T. By far the far highest frequency of TERT promoter mutations was found in myxoid liposarcoma (MLS) (4 out of 9 cases studied, i.e., 44%). Assessment of telomere length from tumor biopsies revealed that TERT promoter-mutated MLSs had significantly fewer shortened telomeres in comparison to TERT wildtype MLSs. Based on the frequency of TERT promoter mutations and the elongated telomere length in mutated compared to wildtype MLS, we hypothesize that occurrence of TERT promoter mutations has a pivotal role in the disease progression as a secondary genetic event at a time when tumor cells face the need for telomere elongation to allow further proliferation.
Disciplines :
Hematology
Author, co-author :
Ferreira, Monica S. Ventura
Crysandt, Martina
Braunschweig, Till
Jost, Edgar
Voss, Barbara
Bouillon, Anne-Sophie ;  Centre Hospitalier Universitaire de Liège - CHU > Département de médecine interne > Service d'hématologie clinique
Knuechel, Ruth
Brummendorf, Tim H.
Beier, Fabian
Language :
English
Title :
Presence of TERT Promoter Mutations is a Secondary Event and Associates with Elongated Telomere Length in Myxoid Liposarcomas.
Publication date :
2018
Journal title :
International Journal of Molecular Sciences
ISSN :
1661-6596
eISSN :
1422-0067
Publisher :
Multidisciplinary Digital Publishing Institute (MDPI), Switzerland
Volume :
19
Issue :
2
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 22 April 2020

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