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Article in English | MEDLINE | ID: mdl-32682592

ABSTRACT

OBJECTIVE: The aim of this study was to evaluate the expression of DNA repair genes in cases of oral squamous cell carcinoma (OSCC). STUDY DESIGN: Expression of the MLH1, MSH2, MLH3, ATM, MRE11A, XRCC1, and PMS2 genes was evaluated by reverse transcription-quantitative polymerase chain reaction in the OSCC group (32 patients) and the control group (15 patients). The groups were compared by using the Mann-Whitney test, with Bonferroni correction. Associations between gene expression levels and clinical data were explored by using Pearson's and Spearman's correlation coefficients, with P value less than .05 indicating a significant difference. RESULTS: The MLH1, MSH2, MLH3, ATM, MRE11A, XRCC1, and PMS2 genes were downregulated in the OSCC group compared with the control group, with significant values for MLH1 (P < .0001); MSH2 (P = .038); MLH3 (P < .0001); ATM (P < .0001); MRE11A (P < .0001); XRCC1 (P = .0004); and PMS2 (P = .008). Analysis of the correlation between gene expression and clinical data only revealed a significant negative correlation between age and expression of the PMS2 gene. CONCLUSIONS: Expression of the DNA repair genes MLH1, MSH2, MLH3, ATM, MRE11 AMRE11A, XRCC1, and PMS2 was reduced in OSCC.


Subject(s)
Carcinoma, Squamous Cell , Mouth Neoplasms , Carcinoma, Squamous Cell/genetics , DNA Repair/genetics , DNA Repair Enzymes/metabolism , Humans , Mismatch Repair Endonuclease PMS2 , Mouth Neoplasms/genetics , MutL Protein Homolog 1/genetics , MutL Protein Homolog 1/metabolism , Polymerase Chain Reaction , Reverse Transcription , X-ray Repair Cross Complementing Protein 1
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