Percentage distribution of leukemia subtypes in Pakistani population, Acute lymphoblastic leukemia (ALL)was the most recurrent leukemia subtype, seen frequently in children (1-15 years). Myeloid leukemias (chronic myeloid leukemia; CML, acute myeloid leukemia; AML) were frequently seen in adults (15.1 – 39 and > 39 years), while chronic lymphocytic leukemia (CLL) was the least occurring leukemia subtype and observed only in adults (greater than 39 years old) in the study population.