In RA, NO selective response with Seropositivity. Study of 28 eligible RCTs shows pts Rx w/ cs- or bDMARD that seropositivity did not predict better bDMARD response (ACR20 RRR ~1). Comparable resp in RF+ & RF- w/ TNFi or non-TNFi bDMARDs. https://t.co/AUWPgkzayt https://t.co/om9AYhNsQ9