RT Journal Article SR Electronic T1 Exploring the association of glyceraldehyde-3-phosphate dehydrogenase gene and Alzheimer disease JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 64 OP 68 DO 10.1212/01.wnl.0000223438.90113.4e VO 67 IS 1 A1 Lin, P. I. A1 Martin, E. R. A1 Bronson, P. G. A1 Browning-Large, C. A1 Small, G. W. A1 Schmechel, D. E. A1 Welsh-Bohmer, K. A. A1 Haines, J. L. A1 Gilbert, J. R. A1 Pericak-Vance, M. A. YR 2006 UL http://n.neurology.org/content/67/1/64.abstract AB Background: Previous linkage studies have shown that chromosome 12 harbors susceptibility genes for late-onset Alzheimer disease (LOAD). However, association studies of several candidate genes on this chromosome region have produced ambiguous results. A recent study reported the association between the glyceraldehyde-3-phosphate dehydrogenase (GAPD) gene on chromosome 12p and the risk of LOAD. Methods: The authors conducted family-based and case-control association studies in two independent LOAD data sets on 12 single-nucleotide polymorphisms (SNPs) in the GAPD gene and its paralogs. Results: No association was found of the GAPD gene with LOAD in the family-based data set, but marginal evidence of association was seen in the later-onset subgroup when age at onset was stratified. The SNP rs2029721 in one GAPD pseudogene was also found to be associated with risk for LOAD in the unrelated case-control data set (p = 0.003). Conclusions: The GAPD gene and its pseudogene may play a role in the development of late-onset Alzheimer disease. However, the effect, if any, is likely to be limited.