Abstract
A diagnosis of pro-B acute lymphoblastic leukemia (ALL) with CD15+ was made in a 42-year-old woman, 12 months after the treatment of uterine adenocarcinoma by carboplatinum, anthracyclines, etoposide and radiotherapy. Molecular cytogenetic studies revealed a karyotype with multiple chromosome changes, including the t(4;11)(q21;q23) and a 17p-chromosome, with MLL disruption and 17p13/p53 gene deletion in 86% of the cells. A p53 exon 6 mutation was documented, resulting in p53 protein stabilization, with 20% of the cells reacting with the 1801 anti-p53 monoclonal antibody. Dual-color FISH using MLL and p53 probes was performed on peripheral blood smears, providing direct evidence of the involvement of the blast cells and of the granulocytic lineage. Only a partial, short-lasting response was obtained by induction treatment, confirming that a poor prognosis is associated with therapy-related ALL with the 4;11 translocation.
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Bigoni, R., Cuneo, A., Roberti, M. et al. Therapy-related adult acute lymphoblastic leukemia with t(4;11)(q21; q23): MLL rearrangement, p53 mutation and multilineage involvement. Leukemia 13, 704–707 (1999). https://doi.org/10.1038/sj.leu.2401391
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DOI: https://doi.org/10.1038/sj.leu.2401391