Urinary biomarkers precede loss of kidney fxn in LN by @andreafava #Ab0850 @RheumNow #ACR23 73 pts w LN. 44% devel GFR loss Elevation of urinary biomark of histo activity at 6, 12 mo predict GFR loss at 3 yrs - esp IL-16, >> proteinuria Combo biomark 12 mo: AUC 0.95 #ACRBest https://t.co/M7sfpCm7Kz