Association of genetic variation in IKZF1, ARID5B, and CEBPE and surrogates for early-life infections with the risk of acute lymphoblastic leukemia in Hispanic childre

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• 作者：Ling-I. Hsu ; Anand P. Chokkalingam ; Farren B. S. Briggs…
• 关键词：Cancer ; Genetic association ; Early ; life infections ; Childhood leukemia ; Gene–environment interaction
• 刊名：Cancer Causes & Control
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：26
• 期：4
• 页码：609-619
• 全文大小：460 KB
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• 刊物类别：Medicine
• 刊物主题：Medicine & Public Health
  Oncology
  Cancer Research
  Public Health
  Epidemiology
  Hematology
  
• 出版者：Springer Netherlands
• ISSN：1573-7225

文摘

Background Genome-wide association studies focusing on European-ancestry populations have identified ALL risk loci on IKZF1, ARID5B, and CEBPE. To capture the impacts of these genes on ALL risk in the California Hispanic population, we comprehensively assessed the variation within the genes and further assessed the joint effects between the genetic variation and surrogates for early-life infections (the presence of older siblings, daycare attendance, and ear infections). Methods Genotypic data for 323 Hispanic ALL cases and 454 controls from the California Childhood Leukemia Study were generated using Illumina OmniExpress v1 platform. Logistic regression assuming a log-additive model estimated odds ratios (OR) associated with each SNP, adjusted for age, sex, and the first five principal components. In addition, we examined potential interactions between six ALL risk alleles and surrogates for early-life infections using logistic regression models that included an interaction term. Results Significant associations between genotypes at IKZF1, ARID5B, and CEBPE and ALL risk were identified: rs7780012, OR 0.50, 95?% confidence interval (CI) 0.35-.71 (p?=?0.004); rs7089424, OR 2.12, 95?% CI 1.70-.65 (p?=?1.16?×?10?); rs4982731, OR 1.69, 95?% CI 1.37-.08 (p?=?2.35?×?10?), respectively. Evidence for multiplicative interactions between genetic variants and surrogates for early-life infections with ALL risk was not observed. Conclusions Consistent with findings in non-Hispanic White population, our study showed that variants within IKZF1, ARID5B, and CEBPE were associated with increased ALL risk, and the effects for ARID5B and CEBPE were most prominent in the high-hyperdiploid ALL subtype in the California Hispanic population. Results implicate the ARID5B, CEBPE, and IKZF1 genes in the pathogenesis of childhood ALL.