Study on the HLAs associated with the occurrence and course of acute/tender dactylitis in PsA patients. Acute dactylitis genetics: •HLA-B27 (OR 1.71), HLA-C12 (OR 1.43), B38/C12 & B27/C02 haplotypes. •Resolution faster on b/tsDMARDs (HR 1.67); unaffected by HLA. Abstract