1. Untreated CLL, CLL/PLL, or SLL (small lymphocytic lymphoma) with indication for therapy (Indications for therapy include at least one of the following: i) one or more disease-related symptoms [fever, night sweats, weight loss, pronounced fatigue]; ii) advanced stage disease (Rai stage >/= 3 or Binet stage C); iii) autoimmune anemia and/or thrombocytopenia that is unresponsive to other therapies; iv) massive or progressive hepatomegaly and/or splenomegaly and/or lymphadenopathy; iv) recurrent infections; v) rapid lymphocyte doubling time of < 6 months).