Risk factor for 1st Thrombosis in OB APS Ab#0115 #ACR23 @RheumNow 186 OAPS pts, followed mean 5.4 yrs. 11 thrombotic events Risk factors: Triple pos APS Abs (OR 11.6), hypocomplementemia (OR 9) Low dose Aspirin (OR 0.14), HCQ (OR 0.11) reduced thrombosis #ACRBest https://t.co/y4KaEAZzA7