Subjects that overlapped between studies were removed as follows. In our previous paper, we reported data from the MGS European American sample. However, as the GWAS sample from that group was larger than we had used we include here the MGS GWAS data rather than our earlier data. The Bulgarian and Irish samples included in fatSNP2 substantially overlap with samples used by the ISC; the ISC data for those populations were excluded. A dataset from Aberdeen was included in the GWAS of both the ISC and SGENE-plus. The SGENE plus data were excluded. It should be additionally noted that the samples from Bonn, Munich, and China that were included in the SGENE-plus study(11) did not overlap with the samples we used in our previous paper(4). We did not include any data from the GWAS of Need et al. (2009)(23) as all those data are subsumed in other datasets included here. We did not include data from the CATIE study(24) as the controls from that study substantially overlap with those used by the MGS study(7).
