TAP2 and Sjogren syndrome: Additional genetic polymorphisms reported to be associated with risk for Sjögren’s syndrome include variants of interleukin 10 (IL-10) [8,9,10], tumor necrosis factor (TNF) [11], antigen peptide transporter 2 (TAP2) [12], and 2′-5′-oligoadenylate synthetase 1 (OAS1) [13].