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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Clin Immunol. 2016 Jul 25;172:29–33. doi: 10.1016/j.clim.2016.07.019

Table 2.

The Patterns of Association of Different Phenotypic Features of Psoriatic Arthritis with certain HLA Alleles

Characteristic Positively Associated Alleles Protective Alleles
Family History of Psoriasis B*37:01:01; C*06:02:01 B*18:01:01
Psoriasis Before Age 18 B*55:01:01; C*06:02:01 B*27:05:02
Arthritis Before Psoriasis B*27:05:02 B*55:01:01; C*06:02:01
Current PASI Score B*08:01:01 B*27:05:02
Any Nail Disease B*08:01:01; B*18:01:01 B*39:01:01; C*06:02:01
Enthesitis B*18:01:01; B*55:01:01; B*57:01:01
Dactylitis B*27:05:02 B*13:02:01; C*06:02:01
Symmetric Sacroiliitis B*27:05:02 C*06:02:01
Asymmetric Sacroiliitis B*08:01:01; B*38:01:01; B*55:01:01