Continuous Infusion of Campath-1H Followed by Subcutaneous Injections in Previously Treated Patients With Chronic Lymphocytic Leukemia

The goal of this clinical research study is to learn if giving CAMPATH-1H first as an injection into a vein, then as an injection under the skin can shrink or slow the growth of the disease in patients with chronic lymphocytic leukemia (CLL) who have already received standard therapy. Another goal is to learn if the side effects related to CAMPATH-1H treatment are less severe by giving the drug first as an injection into a vein then as an injection under the skin.