This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
Summary of genome-wide association scan results for all cases and the PSA subgroup.
Negative LOG10 P values for the Cochran-Armitage test of trend for genome-wide association across the genome and by chromosome are shown. Trend P values were adjusted with the genomic control (GC) method. The spacing between SNPs on the plot is uniform and does not reflect actual physical distances. Adjacent chromosomes are shown in red and then in blue. The horizontal dashed lines display a cutoff of P=5×10−5. A: Results obtained with all cases. B: Results obtained with the subgroup of 91 psoriatic arthritis cases (PSA).