Mj. Bargetzi et al., Dicentric translocation (9;12) presenting as refractory Philadelphia chromosome-positive acute B-cell lymphoblastic leukemia, CANC GENET, 113(1), 1999, pp. 90-92
A 66-year-old Caucasian woman presented with a Philadelphia chromosome posi
tive common B-cell acute lymphoblastic leukemia and a dic(9;12) involving t
he der(9)t(9;22), a rearrangement so far not observed in acute lymphoblasti
c leukemia. The patient was treated for the acute lymphoblastic leukemia, b
ut showed refractory disease and died 6 months after initial diagnosis. Thi
s case suggests that, in the combination of t(9;22) and dic(9:12), the know
n poor prognostic feature of t(9;22) in acute lymphoblastic leukemia may ou
tweigh the favorable outcome reported in patients with dic(9:12). (C) Elsev
ier Science Inc.. 1999; All rights reserved.