<prompt> All of the following are good progostic factors for childhood. All exceptHyperdiploidyFemale sexMature B cell ALLt 12:21 translocation  <response>: The presence of hyperdiploidychromosome number50,DNA index1.16 is associated with good prognosis in contrast to the poor prognosis in patients with hypoploidy.Ceain chromosomal abnormalities are associated with a ourable prognosis like t12;21 and simultaneous presence of trisomy 4 and 10;while,t8;14 associated with Burkitt leukemia ,t4;11 in infant leukemia and t9;22translocation that forms the Philadelphia chromosome,are associated with a poor prognosis.Males are at a higher risk as compared to females.Pre-B phenotype is at a standard risk as compared to mature B cell phenotype which is at a higher risk. Reference:Essential pediatrics-Ghai,8th edition,page no:600,601. 