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Title: Pharmacogenetics of advanced lung cancer: Predictive value of functional genetic polymorphism AGXT Pro11Leu in clinical outcome?
Authors: Catarata, Maria Joana
Lourenço, Margarida 
Martins, Maria Fátima 
Frade, João
Pêgo, Alice 
Cordeiro, Carlos Robalo 
Medeiros, Rui 
Ribeiro, Ricardo
Keywords: Non-small cell lung cancer; Single nucleotide polymorphism; Pharmacogenetics; Cohort study
Issue Date: 2021
Project: MJ Catarata was supported by the Portuguese PulmonologySociety. 
Serial title, monograph or event: Pulmonology
Volume: 27
Issue: 2
Abstract: Introduction AGXT gene codes for the enzyme alanine glyoxylate aminotransferase, which is involved in hepatic peroxisomal metabolism of platinum-based chemotherapeutic agents. The association of genetic variant AGXT rs34116584 on the clinical outcome and response to chemotherapy of patients with non-small cell lung cancer (NSCLC) remains to be established. Our aim was to evaluate the association of functional AGXT gene polymorphism in NSCLC progression, considering as primary and secondary endpoint, progression free survival (PFS) and overall survival (OS), respectively. Methods Genotyping of theAGXT rs34116584 genetic polymorphism was performed by mass spectrometry on 168 DNA samples from patients with NSCLC (stages IIIA-IVB). Univariate survival analysis included the study of Kaplan-Meier curves with the Log-Rank test, while Cox regression was used as a multivariate analysis. Results Multivariate analysis showed shorter PFS for T carriers [HR = 2.0, 95% CI, 1.4−3.0, p < 0.0001] and shorter OS [HR = 1.8, 95% CI, 1.1−3.0, p = 0.017] globally, as well as in a subgroup of patients (n = 144) treated with first line platinum-based chemotherapy [HR = 2.0, 95% CI, 1.3–3.1, p = 0.001] and [HR = 1.8, 95% CI, 1.1–3.1, p = 0.026], respectively. Conclusion This polymorphism seems to have an impact on NSCLC progression, opening new perspectives for its inclusion as a pharmacogenetic predictor of response to platinum-based chemotherapy.
ISSN: 25310437
DOI: 10.1016/j.pulmoe.2020.11.007
Rights: openAccess
Appears in Collections:FMUC Medicina - Artigos em Revistas Internacionais

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