Cohabiting t(12;22) and inv(3) primary rearrangements in an acute myelomonocytic leukemia (FAB M4) cell line.
We describe the cytogenetic characterization of MUTZ-3, the first continuous cell line to be established from acute myelomonocytic leukemia (FAB M4) cells, exhibiting recurrent chromosomal rearrangements associated with this disease category. MUTZ-3 was established from peripheral blood taken at presentation from a 29-year-old male patient and carries the t(12;22)(p13.2;q11.2) associated with acute myelomonocytic leukemia (AMMoL), the inv(3)(q21.2q26.3) associated with multilineage acute myeloid leukemias (AML), and the inv(7)(p 14q35) associated with ataxia telangiectasia (A-T). There was no evidence that the patient was an A-T heterozygote. The breakpoint on chromosome 22 mapped between 5' BCR and D22S39, consistent with the G-banding assignment. Both inversions were translocation-associated and may be further examples of an association previously described in AML FAB M4eo with inv(16). We suggest that the combination of inv(3)/t(3;3) with t(12;22) may represent a new, nonrandom association in AML.
MacLeod
R A
RA
DSMZ, Braunschweig, Germany.
Hu
Z B
ZB
Kaufmann
M
M
Drexler
H G
HG
D000328:Adult; D007446:Chromosome Inversion; D002881:Chromosomes, Human, Pair 12; D002892:Chromosomes, Human, Pair 22; D002893:Chromosomes, Human, Pair 3; D006801:Humans; D007621:Karyotyping; D015479:Leukemia, Myelomonocytic, Acute / Q000235:genetics*; D008297:Male; D014407:Tumor Cells, Cultured