Durable CR was defined as overall response that meets blood, bone marrow and imaging criteria for CR, followed by a \>180 day duration of hematologic remission (HR). CR requires all of the following to be present: No evidence of leukemic cells in peripheral blood and/or by routine H/E staining of bone marrow; Resolution of any hepatomegaly, splenomegaly, and abnormal (\>= 2 cm minimum length) lymphadenopathy by CT or MRI (maximum diameter of spleen should be either \< 17 cm or have decreased by \>25% from its baseline.); HR requires normal complete blood count (CBC) as exhibited by: Neutrophils \>= 1.5 x 10\^9/L, Platelets \>= 100 x 10\^9/L, and hemoglobin \>= 11.0 g/dL without transfusions or growth factors for at least 4 weeks.

Durable CR was defined as overall response that meets blood, bone marrow and imaging criteria for CR, followed by a \>180 day duration of HR. CR requires all of the following to be present: No evidence of leukemic cells in peripheral blood and/or by routine H/E staining of bone marrow; Resolution of any hepatomegaly, splenomegaly, and abnormal (\>= 2 cm minimum length) lymphadenopathy by CT or MRI (maximum diameter of spleen should be either \< 17 cm or have decreased by \>25% from its baseline.); HR requires normal complete blood count (CBC) as exhibited by: Neutrophils \>= 1.5 x 10\^9/L, Platelets \>= 100 x 10\^9/L, and hemoglobin \>= 11.0 g/dL without transfusions or growth factors for at least 4 weeks.