Infinium omni 2.5 8 arrays

The study has been reviewed by the Institutional Review Board of the University of Washington and the ethical committees of several provisional hospitals. We focused on the rural population. We analyzed a total of 241 samples genotyped with the Illumina Infinium Omni 2.5–8 arrays. This is a novel data set collected under the auspices of our study. Subjects were included in the study if all four grandparents originated from the same village or from villages that were <10 kilometers apart. The ages of most participants ranged between 70 and 90 years (the oldest subject was 107 years old); hence their grandparents were born between 1860 and 1880. In the 1861 census the population of Peloponnese was 578 598 individuals. At that time the economy of Peloponnese was exclusively agricultural and over 85% of the population was living in small villages and hamlets. We sampled all the districts of Peloponnese (Figure 1a and Supplementary Table 1) and also focused on two culturally distinct subpopulations, the Tsacones and the Maniots. To compare the Peloponneseans with other populations we analyzed samples from published data sets and data sets generated by our studies (Supplementary Table 2 and Supplementary Figure 1). Merging genotypes from different sources and quality control were done as described.^{11 (link)}