A study to determine whether trisomy 8, deleted 9q and trisomy 22 are markers of cryptic rearrangements of PML/RARalpha, AML1/ETO and CBFB/MYH11 respectively in acute myeloid leukaemia

Langabeer, S. E., Grimwade, D., Walker, H., Rogers, J. R., Burnett, Alan Kenneth, Goldstone, A. H. and Linch, D. C. 1998. A study to determine whether trisomy 8, deleted 9q and trisomy 22 are markers of cryptic rearrangements of PML/RARalpha, AML1/ETO and CBFB/MYH11 respectively in acute myeloid leukaemia. British Journal of Haematology 101 (2) , pp. 338-340. 10.1046/j.1365-2141.1998.00686.x

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Abstract

Acute myeloid leukaemia (AML) patients with either a t(15;17), t(8;21) or inv(16) at diagnosis have ‘good-risk’ disease with a favourable response to therapy and improved survival. Detection of cryptic fusion genes created by these translocations has been reported where there is no cytogenetic evidence of the corresponding abnormality. It is likely that these cases share the same favourable prognosis. Secondary cytogenetic changes commonly associated with these rearrangements are +8 with t(15;17), del(9q) with t(8;21) and +22 with inv(16). These secondary abnormalities are also observed alone, raising the possibility that they may be markers of underlying cryptic rearrangements. In order to determine the frequency of these rearrangements in AML cases with +8, del(9q) or +22 we have performed an analysis of 63 such patients in whom there was no evidence of a t(15;17), t(8;21) or inv(16) by cytogenetics. No disease-related fusion transcripts were identified, indicating that the secondary changes are rarely markers for cryptic rearrangements.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Medicine
Subjects:	R Medicine > R Medicine (General)
Uncontrolled Keywords:	AML;cytogenetics;cryptic rearrangements;secondary abnormalities
Publisher:	Wiley-Blackwell
ISSN:	0007-1048
Last Modified:	25 Jun 2017 04:40
URI:	https://orca.cardiff.ac.uk/id/eprint/58018

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