MIRROR study lead to pegloticase (PEG) label change - adding MTX as Rx to reduced anti-PEG Abs. Based on 14 refractory gout pts given MTX 15mg/wk (w/ folate) and then PEG IV: 3 nonresponders, 1 dropped out, 10 responded/stayed on Rx x 52 wks w/ less ADAbs https://t.co/4Hew7zVu7J https://t.co/za9hQ8Plnl