Abstract:
:The t(9;22)(q34;q11), generating the Philadelphia chromosome (Ph), is found in more than 90% of patients with chronic myeloid leukemia (CML) and in 15-30% of adults with acute lymphoblastic leukemia (ALL). Different groups have recently described the presence of large genomic deletions adjacent to the translocation breakpoint on the derivative chromosome 9 in 9-16% of CML patients. In the present paper, we report a FISH study of 45 Ph+ adult ALL patients with the aim of investigating the presence of deletions on derivative chromosome 9. In four (9%) of 45 cases, all showing an M-bcr, we detected deletions on der(9). The frequency of deletions we observed is similar to that reported in CML patients. The association of an M-bcr breakpoint and deletions appears significant (P=0.03). Some authors have suggested a very low incidence of der(9) deletions in ALL. This discrepancy can be explained by taking into account the low percentage of M-bcr ALL patients in the latter study (18%) compared to the present one (44%).
journal_name
Leukemiajournal_title
Leukemiaauthors
Specchia G,Albano F,Anelli L,Storlazzi CT,Zagaria A,Mancini M,Cuneo A,Pane F,Foà R,Manolelli F,Liso V,Rocchi Mdoi
10.1038/sj.leu.2402829subject
Has Abstractpub_date
2003-03-01 00:00:00pages
528-31issue
3eissn
0887-6924issn
1476-5551pii
2402829journal_volume
17pub_type
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