GAS5 and rheumatoid arthritis: Then, gene polymorphisms of differentially expressed lncRNAs (rs2067051 and rs2075745 for H19; rs6790, rs16847206, and rs6692753 for GAS5; rs2070107, rs2877877, rs2632516, rs2285991, rs8071916, rs12601867, rs13414, rs2680700, and rs4372750 for linc0597) with RA susceptibility were detected in the second stage.