Journal Article


Orla Hardiman
Agnieszka Slowik
Daniel G Bradley
Barbara Tomik
Simon Cronin



female genome human genetics genetic predisposition to disease dipeptidyl peptidases and tripeptidyl peptidases dpp6 protein human potassium channels genome wide association study male amyotrophic lateral sclerosis aged polymorphism single nucleotide middle aged peptide hydrolases nerve tissue proteins humans

Screening for replication of genome-wide SNP associations in sporadic ALS. (2008)

Abstract We recently reported a joint analysis of genome-wide association (GWA) data on 958 sporadic amyotrophic lateral sclerosis (ALS) cases and 932 controls from Ireland and the publicly available data sets from the United States and the Netherlands. The strongest pooled association was rs10260404 in the dipeptidyl-peptidase 6 (DPP6) gene. Here, we sought confirmation of joint analysis signals in both an expanded Irish and a Polish ALS cohort. Among 287 522 autosomal single-nucleotide polymorphisms (SNPs), 27 were commonly associated on joint analysis of the Irish, US and Dutch GWAs. These 27 SNPs were genotyped in an expanded Irish cohort (312 patients with SALS; 259 controls) and an additional Polish cohort (218 patients; 356 controls). Eleven SNPs, including rs10260404, reached a final P-value below 0.05 in the Irish cohort. In the Polish cohort, only one SNP, rs6299711, showed nominal association with ALS. Pooling of data for 1267 patients with ALS and 1336 control subjects did not identify any association reaching Bonferroni significance (P<1.74 x 10(-7)). The present strategy did not reveal any consistently associated SNP across four populations. The result for DPP6 is surprising, as it has been replicated elsewhere. We discuss the possible interpretations and implications of these findings for future ALS GWA studies both within and between populations.
Collections Ireland -> Royal College of Surgeons in Ireland -> PubMed

Full list of authors on original publication

Orla Hardiman, Agnieszka Slowik, Daniel G Bradley, Barbara Tomik, Simon Cronin

Experts in our system

Orla Hardiman
Trinity College Dublin
Total Publications: 156
Daniel Bradley
Trinity College Dublin
Total Publications: 84
Simon Cronin
University College Cork
Total Publications: 15