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Br J Haematol. 2009 Jun;145(5):614-23. doi: 10.1111/j.1365-2141.2009.07675.x. Epub 2009 Mar 30.

Risk of non-Hodgkin lymphoma in association with germline variation in complement genes.

Author information

  • 1Division of Epidemiology, Department of Health Sciences Research, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN 55905, USA. cerhan.james@mayo.edu

Abstract

Germline mutations in complement genes have been associated with susceptibility to infections and autoimmune diseases, conditions that are associated with non-Hodgkin lymphoma (NHL) risk. To test the hypothesis that common genetic variation in complement genes affect risk of NHL, we genotyped 167 single nucleotide polymorphisms (SNPs) from 31 genes in 441 NHL cases and 475 controls. Principal components (PC) and haplotype analyses were used for gene-level tests of NHL risk, while individual SNPs were modelled as having a log-additive effect. In gene level PC analyses, C2 (P = 0.023), C5 (P = 0.0032) and C9 (P = 0.020) were associated with NHL risk; haplotype analyses showed similar results, as well as a haplotype association for C7 (P = 0.046). When all four genes were considered simultaneously, only C5 and C9 remained significant (P < 0.05). In SNP level results from these genes, 10 SNPs had a P < 0.05. However, after correcting for multiple testing, only the C5 SNPs rs7026551 (q = 0.015; OR = 1.54, 95% CI 1.21-1.95) and rs2416810 (q = 0.015; OR = 1.57; 95% CI 1.22-2.01), and the C9 SNP rs187875 (q = 0.015; OR = 0.68; 95% 0.56-0.84) remained noteworthy. Associations were similar for the common NHL subtypes. In summary, we provide evidence for a role of genetic variation in complement genes, particularly C5 and C9, and NHL risk.

PMID:
19344414
[PubMed - indexed for MEDLINE]
PMCID:
PMC2820509
Free PMC Article

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