BTLA and psoriatic arthritis: A tendency for higher TIM3 expression in the group without psoriatic arthritis compared to the group with psoriatic arthritis (276.1 vs. 209.1 p = 0.0652) (Figure 7a), and, also, higher BTLA expression in the type I Ps group compared to the type II Ps group, were observed (24.19 vs. 15.70 p = 0.0365) (Figure 7b).