title: XRCC1 polymorphisms and haplotypes in Mexican patients with acute lymphoblastic leukemia.
abstract: We examined the influence of the Arg194Trp, Arg280His, and Arg399Gln polymorphisms of XRCC1 (X-ray repair cross-complementing group 1) on the development of childhood acute lymphoblastic leukemia (ALL) in 120 ALL patients and 120 controls in Mexico. All of them were genotyped for these polymorphisms, using polymerase chain reaction. No significant differences in allele and genotype frequencies for any polymorphism were observed between patients and controls. Estimation of haplotypes showed the eight expected haplotypes (A-H), seven of which were found in both patients and controls; haplotype A (Arg-Arg-Arg) was the most common, whereas haplotypes F and G were absent in patients and controls, respectively. Haplotype B (Trp-Arg-Arg) was found to be associated with an increased risk of ALL (odds ratio (OR) = 1.95, 95% confidence interval (CI) = 1.13-3.37; P = 0.016), particularly in males (OR = 2.65, 95%CI = 1.25-5.63; P = 0.01). Individually, the 194Trp, 280His, and 399Gln alleles were not associated with significantly increased risk for ALL in these Mexican children.
authors.affiliation: Unidad Academica de Ciencias de la Salud y Tecnologia, Universidad Autonoma de Tamaulipas, Matamoros, Tamps, Mexico.
authors.forename: J P
authors.initials: JP
authors.lastname: Meza-Espinoza
authors.forename: V
authors.initials: V
authors.lastname: Peralta-Leal
authors.forename: M
authors.initials: M
authors.lastname: Gutierrez-Angulo
authors.forename: N
authors.initials: N
authors.lastname: Macias-Gomez
authors.forename: M L
authors.initials: ML
authors.lastname: Ayala-Madrigal
authors.forename: P
authors.initials: P
authors.lastname: Barros-Nuñez
authors.forename: J
authors.initials: J
authors.lastname: Duran-Gonzalez
authors.forename: E
authors.initials: E
authors.lastname: Leal-Ugarte
mesh_terms: D000293:Adolescent; D001483:Base Sequence; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D017931:DNA Primers; D004268:DNA-Binding Proteins / Q000235:genetics*; D004591:Electrophoresis, Polyacrylamide Gel; D005260:Female; D006239:Haplotypes; D006801:Humans; D007223:Infant; D008297:Male; D008800:Mexico; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D012150:Polymorphism, Restriction Fragment Length; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000235:genetics*; D000076105:X-ray Repair Cross Complementing Protein 1
chemical_list: D017931:DNA Primers; D004268:DNA-Binding Proteins; D000076105:X-ray Repair Cross Complementing Protein 1; C000619371:XRCC1 protein, human