Which of the following is a poor prognostic factor in Acute Lymphoblastic Leukemia (ALL):: (A) Hyperdiploidy, (B) t (9; 22); t (4; 11), (C) 2-8 years of Age, (D) WBC count < 50,000
Answer is B. Unourable cytogenetics in ALL are Philadelphia chromosomes t(9;22) & t(4;11) Ref: CMDT 2008 Edition, Page 447