PMID- 20012387 OWN - NLM STAT- MEDLINE DCOM- 20101122 LR - 20240209 IS - 1466-1268 (Electronic) IS - 1355-8145 (Print) IS - 1355-8145 (Linking) VI - 15 IP - 5 DP - 2010 Sep TI - HLA complex-linked heat shock protein genes and childhood acute lymphoblastic leukemia susceptibility. PG - 475-85 LID - 10.1007/s12192-009-0161-6 [doi] AB - Three heat shock protein 70 (HSP70) genes, HSPA1L, HSPA1A, and HSPA1B, are located within the human leukocyte antigen (HLA) class III region. HSPs act as stress signals and regulate natural killer cell response to cancer. HSP70 gene polymorphisms show disease associations partly due to their linkage disequilibrium with HLA alleles. To systematically evaluate their associations with childhood acute lymphoblastic leukemia (ALL), we examined the three functional single nucleotide polymorphisms (SNPs) rs2227956 (T493M) in HSPA1L, rs1043618 in HSPA1A 5'UTR, and rs1061581 (Q351Q) in HSPA1B by TaqMan assays or polymerase chain reaction-restriction fragment length polymorphism in 114 ALL cases and 414 controls from Wales (UK), in 100 Mexican Mestizo ALL cases and 253 controls belonging to the same ethnic group, and in a panel of 82 HLA-typed reference cell line samples. Homozygosity for HSPA1B rs1061581 minor allele G was associated with protection (odds ratio (OR) = 0.37, 95% confidence interval (CI) = 0.16-0.78; P = 0.007) with gene-dosage effect (additive model) reaching significance (P = 0.0001) in the Welsh case-control group. This association was replicated in the second case-control group from Mexico (OR (recessive model) = 0.49, 95% CI = 0.24-0.96; P = 0.03), and the pooled analysis yielded a strong association (Mantel-Haenszel OR = 0.43, 95% CI = 0.27-0.69, P = 0.0004). The association was stronger in males in each group and in the pooled analysis. A three-SNP haplotype including the major allele A of rs1061581 showed a highly significant increase in Welsh cases compared with respective controls (6.7% vs 1.8%; P = 0.0003) due to the difference between male cases and controls. The protective allele of rs1061581 occurred more frequently on the HLA-DRB3 haplotypes (especially DRB1*03) in the cell line panel, but the HSPA1B association was independent from the HLA-DRB4 association previously detected in the same case-control group from Wales (adjusted P = 0.001). Given the cancer promoting roles played by HSPs intracellularly as well as roles in immune surveillance when expressed on the cell surface and the known correlations between expression levels and the HSP polymorphisms, these results are likely to indicate a primary association and warrant detailed assessment in childhood ALL development. FAU - Ucisik-Akkaya, Esma AU - Ucisik-Akkaya E AD - Genomic Immunoepidemiology Laboratory, HUMIGEN LLC, The Institute for Genetic Immunology, 2439 Kuser Road, Hamilton, NJ 08690-3303, USA. FAU - Davis, Charronne F AU - Davis CF FAU - Gorodezky, Clara AU - Gorodezky C FAU - Alaez, Carmen AU - Alaez C FAU - Dorak, M Tevfik AU - Dorak MT LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20091209 PL - Netherlands TA - Cell Stress Chaperones JT - Cell stress & chaperones JID - 9610925 RN - 0 (HSP70 Heat-Shock Proteins) RN - 0 (HSPA1A protein, human) RN - 0 (HSPA1B protein, human) RN - 0 (HSPA1L protein, human) SB - IM MH - Adolescent MH - Adult MH - Female MH - Genetic Predisposition to Disease/genetics MH - Genotype MH - HSP70 Heat-Shock Proteins/*genetics MH - Haplotypes MH - Humans MH - Male MH - Polymorphism, Restriction Fragment Length/genetics MH - Polymorphism, Single Nucleotide/genetics MH - Precursor Cell Lymphoblastic Leukemia-Lymphoma/*genetics MH - Sex Factors PMC - PMC3006629 EDAT- 2009/12/17 06:00 MHDA- 2010/12/14 06:00 PMCR- 2011/03/01 CRDT- 2009/12/17 06:00 PHST- 2009/07/20 00:00 [received] PHST- 2009/11/16 00:00 [accepted] PHST- 2009/11/14 00:00 [revised] PHST- 2009/12/17 06:00 [entrez] PHST- 2009/12/17 06:00 [pubmed] PHST- 2010/12/14 06:00 [medline] PHST- 2011/03/01 00:00 [pmc-release] AID - S1355-8145(23)00570-9 [pii] AID - 161 [pii] AID - 10.1007/s12192-009-0161-6 [doi] PST - ppublish SO - Cell Stress Chaperones. 2010 Sep;15(5):475-85. doi: 10.1007/s12192-009-0161-6. Epub 2009 Dec 9.