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Chinese Journal of Gastrointestinal Surgery ; (12): 400-403, 2012.
Artículo en Chino | WPRIM | ID: wpr-290774

RESUMEN

<p><b>OBJECTIVE</b>To investigate single nucleotide polymorphisms(SNPs) and haplotypes of interleukin-18(IL-18) gene associated with the susceptibility to colorectal cancer(CRC).</p><p><b>METHODS</b>Two SNPs of IL-18 gene promoter -137G/C and -607C/A in 170 patients with CRC and 160 healthy controls matched by age and sex in a Chinese population were analyzed using polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP) strategy. Frequency of haplotypes and linkage disequilibrium of IL-18 gene in different groups were analyzed by SHEsis programs.</p><p><b>RESULTS</b>The distributions of IL-18 gene -607C/A polymorphism did not differ between CRC patients and healthy controls, but IL-18 gene -137G/C polymorphism was significantly different(P<0.05). The relative risk of C allele for CRC was 1.814 times of the G allele (OR=1.814,95% CI:1.246-2.642). Consistent with the results of the genotyping analyses, IL-18 -137G/C and -607C/A polymorphisms showed strong linkage disequilibrium(|D'|=0.945), frequency of the -137C/-607A haplotype in patients with CRC was significantly higher than that in healthy controls(P<0.05). The -137C/-607A haplotype was associated with a significantly increased risk of CRC(OR=1.637, 95% CI:1.100-2.437).</p><p><b>CONCLUSIONS</b>IL-18 gene -137G/C polymorphism and -137C/-607A haplotype are associated with CRC. -137C allele may be an important genetic susceptibility gene for CRC.</p>


Asunto(s)
Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios de Casos y Controles , Neoplasias Colorrectales , Genética , Predisposición Genética a la Enfermedad , Haplotipos , Interleucina-18 , Genética , Polimorfismo de Longitud del Fragmento de Restricción , Polimorfismo de Nucleótido Simple
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