Article ; Online: Messenger-RNA Expression of Five Gemcitabine Sensitivity-related Genes Predicting Outcome in Advanced-stage Non-small Cell Lung Cancer.
2020 Volume 40, Issue 2, Page(s) 901–913
Abstract: Background/aim: Tumoural transcriptional levels of RRM1, RRM2, CDA, dCK and hENT1 genes are potential biomarkers for gemcitabine's efficacy in non-small cell lung cancer (NSCLC).: Patients and methods: We retrospectively analysed each gene's relative ...
Abstract | Background/aim: Tumoural transcriptional levels of RRM1, RRM2, CDA, dCK and hENT1 genes are potential biomarkers for gemcitabine's efficacy in non-small cell lung cancer (NSCLC). Patients and methods: We retrospectively analysed each gene's relative mRNA expression by quantitative, real-time polymerase chain reaction in microdissected, formalin-fixed, paraffin-embedded primary-tumour specimens from 219 chemonaïve patients with advanced-stage NSCLC, treated with gemcitabine-based regimens within clinical trials. The five genes' transcriptional patterns were integrated into an ordinal, five-level gemcitabine-susceptibility classifier (5L-GSC). Results: Treatment efficacy increased progressively across the five susceptibility levels, with the very-high chemosensitivity cases obtaining the most clinical benefit. 5L-GSC emerged as an independent prognosticator for overall response and disease control rates, time to progression and overall survival at p-values of 0.03, 0.004, <0.001 and <0.001, respectively, with results remaining significant after bootstrapping. Penalised, optimally-scaled, categorical-regression modelling of overall response identified 5L-GSC as the most stable predictor. Conclusion: The proposed composite biomarker is promising for customising front-line chemotherapy in NSCLC. |
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MeSH term(s) | Aged ; Carcinoma, Non-Small-Cell Lung/drug therapy ; Carcinoma, Non-Small-Cell Lung/genetics ; Carcinoma, Non-Small-Cell Lung/pathology ; Deoxycytidine/analogs & derivatives ; Deoxycytidine/pharmacology ; Deoxycytidine/therapeutic use ; Female ; Humans ; Lung Neoplasms/drug therapy ; Lung Neoplasms/genetics ; Lung Neoplasms/pathology ; Male ; Middle Aged ; RNA, Messenger/metabolism |
Chemical Substances | RNA, Messenger ; Deoxycytidine (0W860991D6) ; gemcitabine (B76N6SBZ8R) |
Language | English |
Publishing date | 2020-03-11 |
Publishing country | Greece |
Document type | Journal Article |
ZDB-ID | 604549-2 |
ISSN | 1791-7530 ; 0250-7005 |
ISSN (online) | 1791-7530 |
ISSN | 0250-7005 |
DOI | 10.21873/anticanres.14023 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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