the frequency of translocations , an adverse cytogenetic feature , was significantly lower in calla+ early pre-b all cases ( 35 % ) than in b cell ( 100 % ; p less than .0001 ) , pre-b ( 59 % ; p less than .001 ) , or calla- early pre-b ( 62 % ; p = .016 ) cases .
C0004561
b cell
C1292769
pre-b