<prompt> 2 year old child with ALL, which of the following has the best prognosis?Age between 1-10 yearsTLC1 lacPetechiaet9:22  <response>: Ans. a Age between 1-10 yearsRef: Harrison 19th ed. 1699-700Prognostic factor in acute lymphoblastic leukemiaExcellent prognosis t12;21 and TEL-AML1 fusion Hyperdiploidy and trisomy of specific chromosomes 4,10 and 17 is associated with an excellent prognosis. Age 1 years and 10 yearsDismal prognosis t9;22 or Philadelphia chromosome and BCR- ABL fusion Hypodiploidy with chromosome number 45 is associated with a poor prognosis Age 10 years WBC 50,000cu.mm3 CNS leukemia at presentation 