Best proof of difference betw Seropos vs seroneg RA from TREAT-EARLIER 12 mos study 236 clinically suspect arthralgia pts w/ subclinical Jt inflammation Rx w/ MTX vs PBO. MTX prevented RA only the seroneg RA (9 v 35%); But no protection in seropos RA (58 vs 65%) https://t.co/A5aFUgMPQR