A Polymorphism in the Cytidine Deaminase Promoter Predicts Severe Capecitabine-Induced Hand-Foot Syndrome

• Published in: Clinical cancer research Vol. 17; no. 7; pp. 2006 - 2013
• Main Authors: CARONIA, Daniela, MARTIN, Miguel, GONZALEZ-NEIRA, Anna, SASTRE, Javier, DE LA TORRE, Julio, ANGEL GARCIA-SAENZ, José, ALONSO, Maria R, MORENO, Leticia T, PITA, Guillermo, DIAZ-RUBIO, Eduardo, BENITEZ, Javier
• Format: Journal Article
• Language: English
• Published: Philadelphia, PA American Association for Cancer Research 01-04-2011
• Subjects: 5-Fluorouracil; Adult; Aged; Aged, 80 and over; Antimetabolites, Antineoplastic - adverse effects; Antineoplastic agents; Base Sequence; Binding Sites; Biological and medical sciences; Breast Neoplasms - drug therapy; Capecitabine; Cell Line, Tumor; Colorectal Neoplasms - drug therapy; Cytidine Deaminase - genetics; Deoxycytidine - adverse effects; Deoxycytidine - analogs & derivatives; Dermatology; E2F Transcription Factors - metabolism; Epstein-Barr virus; Erythema - chemically induced; Erythema - genetics; Female; Fluorouracil - adverse effects; Fluorouracil - analogs & derivatives; Foot Dermatoses - chemically induced; Foot Dermatoses - genetics; Genetic Association Studies; Genetic Predisposition to Disease; Hand Dermatoses - chemically induced; Hand Dermatoses - genetics; Haplotypes; Humans; Logistic Models; Male; Medical sciences; Middle Aged; Pain - chemically induced; Pharmacology. Drug treatments; Polymorphism, Single Nucleotide; Prodrugs - adverse effects; Promoter Regions, Genetic; Sequence Analysis, DNA; Syndrome; Transcription, Genetic; Vascular disorders of the skin; Antineoplastic agent; Acrosyndrome; Skin disease; Genetic variability; Enzyme; Capecitabine; Fluoropyrimidine derivatives; Cardiovascular disease; Genotype; Prodrug; Vascular disease; Promoter; Hydrolases; Capillary vessel disease; Erythromelalgia; Predictive factor; Pyrimidine nucleoside; Cytidine deaminase; Polymorphism
• ISSN: 1078-0432; 1557-3265
• DOI: 10.1158/1078-0432.CCR-10-1741

Hand-foot syndrome (HFS) is one of the most relevant dose-limiting adverse effects of capecitabine, an oral prodrug of 5-fluorouracil used in the standard treatment of breast and colorectal cancer. We investigated the association between grade 3 HFS and genetic variations in genes involved in capecitabine metabolism.
We genotyped a total of 13 polymorphisms in the carboxylesterase 2 (CES2) gene, the cytidine deaminase (CDD) gene, the thymidine phosphorylase (TP) gene, the thymidylate synthase (TS) gene, and the dihydropyrimidine dehydrogenase (DPD) gene in 130 patients treated with capecitabine. We correlated these polymorphisms with susceptibility to HFS.
We found an association of HFS appearance with rs532545 located in the promoter region of CDD (OR = 2.02, 95% CI = 1.02-3.99, P = 0.039). Because we found no association between the rs532545 genotype and CDD mRNA expression in Epstein-Barr virus lymphoblastoid cells, we explored additional genetic variations across the CDD promoter. We found an insertion, rs3215400, in linkage disequilibrium with rs532545 (D' = 0.92), which was more clearly associated with HFS (OR = 0.51, 95% CI = 0.27-0.95, P = 0.028) in patients and with total CDD gene expression (P = 0.004) in lymphoblastoid cells. In silico analysis suggested that this insertion might create a binding site for the transcriptional regulator E2F. Using a SNaPshot assay in lymphoblastoid cells, we observed a 5.7-fold increased allele-specific mRNA expression from the deleted allele.
The deleted allele of rs3215400 shows an increased allele-specific expression and is significantly associated with an increased risk of capecitabine-induced HFS.