Patients must have T-LGL-associated hemocytopenia(s)* as defined by an absolute granulocyte count (AGC) less than 1000/uL, platelet count less than100,000/uL or hemoglobin less than 9.0 gm/dL, or have required transfusion of 3 or more units of red blood cell products in the last 6 months, or any combination of these.