Study of 1778 #SLE pts, of whom 121 had refractory thrombocytopenia (TP)(Plt <50K, unresp. to pred), Risk factors included pregnancy, Autoimmune hemolytic anemia, decreased C3, severity of TP and elevated ACL-IgG. https://t.co/ZNqQfUoYUq https://t.co/eQNcKcc9Uz