Interrogation of TERT promoter hotspot mutations in ameloblastoma and ameloblastic carcinoma.
J Oral Pathol Med
; 52(3): 271-275, 2023 Mar.
Article
em En
| MEDLINE
| ID: mdl-36169975
ABSTRACT
BACKGROUND:
TERT promoter mutations increase telomerase activity, conferring cell immortality. The coexistence of TERT promoter mutations with BRAFV600E is associated with aggressiveness. Ameloblastoma and ameloblastic carcinoma are infiltrative neoplasms that harbor BRAFV600E; however, it remains unknown if these odontogenic tumors also show TERT promoter mutations.METHODS:
Genomic DNA of paraffin-embedded ameloblastomas (n = 6) and ameloblastic carcinomas (n = 3) were Sanger-sequenced to assess the hotspot TERT promoter mutations C228T and C250T. BRAFV600E status was screened by TaqMan allele-specific quantitative polymerase chain reaction.RESULTS:
None of the samples harbored TERT promoter mutations. The BRAFV600E mutation was positive in 3 of 6 of ameloblastomas and in 1 of 3 of ameloblastic carcinomas.CONCLUSION:
The absence of TERT promoter mutation in the samples indicates that this molecular event is not relevant to the tumors' pathogenesis. Further studies are necessary to explore undefined genetic or epigenetic mechanisms related to TERT-upregulation in ameloblastoma, and the telomerase activity in ameloblastic carcinoma.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Carcinoma
/
Ameloblastoma
/
Tumores Odontogênicos
/
Telomerase
Limite:
Humans
Idioma:
En
Revista:
J Oral Pathol Med
Assunto da revista:
ODONTOLOGIA
/
PATOLOGIA
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Brasil