Most other associations of common genetic risk to PsA and autoimmune diseases lie in the HLA-C*07:01, which is the HLA-C constituent of the the ancestral Caucasian haplotype AH8.1 (the Super B8, HLA-A*01:01-C*07:01-B*08:01-DRB1*03:01-DRB3*01:01-DQA1*05:01-DQB1*02:01) [65]. Here, HLA-C is linked to autoimmune disease.