IL1A and rheumatoid arthritis: At baseline, monocyte MIP-1β/CCL4 and IL-1-RA levels also correlated positively (rs = 0.58; p = 0.024 and rs = 0.53; p = 0.043 respectively) with CLEC12A expression while RANTES/CCL5 (rs = -0.67; p = 0.007) expression correlated negatively with CLEC12A.