Juan Francisco Miquel, Gareth I Owen, Luis A Quiñones, Marcelo Garrido, Ricardo Armisén, Alejandro H Corvalán, Zhiguang Li, Yuwei Liao, Maria Rodriguez-Fernandez, Miguel Cordova-Delgado, María A Lavanderos, Ignacio N Retamal, Mauricio P Pinto, Matías Muñoz-Medel, Charlotte N Hill, Elisa Cumsille, María Loreto Bravo
Journal: BMC cancer 2021;21(1):1030
PMID: 34525956
BACKGROUND
Fluoropyrimidine plus platinum chemotherapy remains the standard first line treatment for gastric cancer (GC). Guidelines exist for the clinical interpretation of four DPYD genotypes related to severe fluoropyrimidine toxicity within European populations. However, the frequency of these single nucleotide polymorphisms (SNPs) in the Latin American population is low (< 0.7%). No guidelines have been development for platinum. Herein, we present association between clinical factors and common SNPs in the development of grade 3-4 toxicity.
METHODS
Retrospectively, 224 clinical records of GC patient were screened, of which 93 patients were incorporated into the study. Eleven SNPs with minor allelic frequency above 5% in GSTP1, ERCC2, ERCC1, TP53, UMPS, SHMT1, MTHFR, ABCC2 and DPYD were assessed. Association between patient clinical characteristics and toxicity was estimated using logistic regression models and classification algorithms.
RESULTS
Reported grade ≤ 2 and 3-4 toxicities were 64.6% (61/93) and 34.4% (32/93) respectively. Selected DPYD SNPs were associated with higher toxicity (rs1801265; OR = 4.20; 95% CI = 1.70-10.95, p = 0.002), while others displayed a trend towards lower toxicity (rs1801159; OR = 0.45; 95% CI = 0.19-1.08; p = 0.071). Combination of paired SNPs demonstrated significant associations in DPYD (rs1801265), UMPS (rs1801019), ABCC2 (rs717620) and SHMT1 (rs1979277). Using multivariate logistic regression that combined age, sex, peri-operative chemotherapy, 5-FU regimen, the binary combination of the SNPs DPYD (rs1801265) + ABCC2 (rs717620), and DPYD (rs1801159) displayed the best predictive performance. A nomogram was constructed to assess the risk of developing overall toxicity.
CONCLUSION
Pending further validation, this model could predict chemotherapy associated toxicity and improve GC patient quality of life.
© 2021. The Author(s).
Full Text Sources:
Medical:
Miscellaneous:
Research Materials:
© Copyright 2026, Nutrition Evidence
We use cookies to improve your experience and analyze site traffic with Google Analytics. By continuing to use our site, you agree to our use of cookies. Learn more.