{{Genotype
|rsid=11209026
|allele1=A
|allele2=A
|magnitude=3
|repute=Good
|summary=0.26x lower risk for certain autoimmune diseases.
}}
Greatly decreased risk of Ankylosing Spondylitis (0.36x), Chron's Disease, Psoriasis, and Ulcerative Colitis. This is the extremely rare homozygous mutant version of the interleukin-23 (IL-23) receptor.