Deletion of MYC and presence of double minutes with MYC amplification in a morphologic acute promyelocytic leukemia-like case lacking RARA rearrangement: could early exclusion of double-minute chromosomes be a prognostic factor?

Cancer Genetics and Cytogenetics
John L FraterJacqueline R Batanian

Abstract

Gene amplification on double minutes is rarely found in acute myeloid leukemia (AML) and is often linked to poor prognosis. It is often associated with acute myeloid leukemia with differentiation (AML-M2) and is rarely reported in acute promyelocytic leukemia (APL), which is characterized in the vast majority of cases by the reciprocal t(15;17)(q22;q21) with resultant translation of an abnormal PML-RARA fusion protein. Most of the rare cases of APL that lack this translocation have a demonstrable RARA breakpoint. We report on a morphologic APL-like case lacking t(15;17) and the RARA breakpoint and also has the deletion MYC of 8q24 associated with the occurrence of MYC amplification on double-minute chromosomes (dmin). Excessive exclusion of dmin was observed at the initial diagnosis. These findings are compared to the few cases previously reported in the literature.

References

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Oct 1, 1989·Proceedings of the National Academy of Sciences of the United States of America·H ShimaM Nagao
Nov 3, 1998·Cancer Genetics and Cytogenetics·C SambaniG E Pantelias
Nov 7, 2002·Cancer Genetics and Cytogenetics·Lijun ZhangShibo Li
Feb 20, 2003·Journal of Hematotherapy & Stem Cell Research·Mirna SucićAna Stavljenić-Rukavina
Aug 26, 2003·Cancer Genetics and Cytogenetics·Stephanie R BrockmanGordon W Dewald

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Citations

Feb 2, 2010·Cancer Genetics and Cytogenetics·Hélène BruyèreMonika Hudoba
Nov 23, 2006·Seminars in Cancer Biology·Fabien Kuttler, Sabine Mai
Nov 14, 2014·Molecular Cytogenetics·Pino J PoddigheMarielle J Wondergem
Jul 7, 2011·Clinical Lymphoma, Myeloma & Leukemia·Christos VaklavasJames M Foran

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