Fig. 1. Manhattan plot and corresponding quantile-quantile plot in GWAS for all male probands vs their unaffected brothers.
Manhattan plot a and corresponding quantile-quantile plot b in GWAS for all male probands vs their unaffected brothers. We conducted a GWAS in the Simons Simplex Collection data set of 597 male probands and 370 unaffected brothers genotyped by the Illumina Human Omni2.5 array using the sib transmission/disequilibrium test (sib-TDT). We observed no significant associations in this GWAS with the genome-wide threshold of P = 5.0 × 10−8. The blue horizontal line indicates the genome-wide suggestive threshold of p = 1.0 × 10−5.