Alterations of P53 and RB genes and the evolution of the accelerated phase of chronic myeloid leukemia.

Abstract:

:Using the single-strand conformation polymorphism and heteroduplex analyses, the P53 and RB genes were analyzed in cell samples from twenty-eight patients with chronic myeloid leukemia (CML) both at diagnosis and at the onset of accelerated phase (AP) of the disease. No alterations of the P53 or RB genes were found in any of the chronic phase (CP) samples. Structural abnormalities of the P53 gene were observed in ten of twenty-eight AP samples within exons 4, 5, 7 and 9. Of the ten cases of AP disease with altered P53 genes, five patients also suffered from the deletion of the other allele. Alterations of the RB gene could be detected in six AP samples, and aberrant band patterns were found in the analysis of exons 2, 3, 4, 6, 7, 13, 14, 17, 21 and 26. Among the six AP samples with structural abnormalities of the RB gene, two showed the loss of the other allele. It is of note that alterations of both P53 and RB genes were observed in two AP samples. Our data strongly suggest that abnormalities of the P53 and RB genes and acceleration of CML are linked events in some cases of AP.

journal_name

Leuk Lymphoma

journal_title

Leukemia & lymphoma

authors

Beck Z,Kiss A,Tóth FD,Szabó J,Bácsi A,Balogh E,Borbély A,Telek B,Kovács E,Oláh E,Rak K

doi

10.3109/10428190009059278

keywords:

subject

Has Abstract

pub_date

2000-08-01 00:00:00

pages

587-97

issue

5-6

eissn

1042-8194

issn

1029-2403

journal_volume

38

pub_type

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