I have to agree with Stormy and snowshoe....it's well above my head but I'm grateful someone has the knowhow to dissect some of these publications.

Another one I saw today that I found interesting but for those with the 3 genes (HLA-B27, EARP1 and IL23R) holds a one and four chance of developing AS. I don't know how credible it is (in light of the advertising at the bottom of the page).