Observational Study of Fostamatinib as Second Line Therapy in Adult Patients With Immune Thrombocytopenia (ITP) and Insufficient Response to a Prior Therapy

New York Medical College Westchester Medical Center, Valhalla

New York Medical College, Valhalla

Maryland Oncology Hematology, P.A, Clinton

The Center for Cancer and Blood Disorders, Bethesda

Maryland Oncology Hematology, P.A, Rockville

Maryland Oncology Hematology, P.A, Silver Spring

Maryland Oncology Hematology, P.A, Columbia

Saint Agnes Hospital, Baltimore

Advanced Research, Tamarac

Simmons Cancer Institute at Southern Illinois University, Springfield

Washington University, St Louis

University of Kansas Medical Center, Kansas City

Boston Medical Center, Boston

Regional Cancer Care Associates, LLC, Little Silver