<prompt> Good prognosis factors of ALL are all exceptHyperdipoidyWBC count 50000Age 10 yearsT 12:21 translocation  <response>: Hyperdiploidy with chromosome number more than 50 is associated with good prognosis for ALL.Ceain chromosomal abnormalities like t12;21 are also associated with good prognosis.Age 10 years is a bad prognostic factor,the age group of 2-10 years have ourable outcome. WBC count less than 50,000mm3 is also associated with good prognosis. Reference:Essential pediatrics-Ghai,8th edition,page no:600,601. 