6q deletion discriminates Waldenström macroglobulinemia from IgM monoclonal gammopathy of undetermined significance.

Cancer Genet Cytogenet 2006 Sep;169(2):150-3

Mayo Clinic Comprehensive Cancer Center and Division of Hematology and Oncology, Mayo Clinic Scottsdale, 3-001, Scottsdale, AZ 89259, USA

IgM monoclonal gammopathy of undetermined significance (IgM MGUS) and Waldenström macroglobulinemia (WM) are sometimes clinically difficult to distinguish. In our previous study, deletion of the long arm of chromosome 6 (6q) was found in about half of WM patients. To further clarify the area of minimal deletion at 6q (6q-) and to address the issue of whether 6q- occurs in IgM MGUS, 12 IgM MGUS and 38 WM patients were studied by fluorescence in situ hybridization using probes targeting different chromosomal segments of 6q. No 6q deletions were found in IgM MGUS samples. Of 38 successfully studied WM patients, 21 (55%) showed a deletion of 6q. The area of minimal deletion was between 6q23 and 6q24.3, but the deletion usually encompassed a large fragment of the 6q arm. These results indicate that 6q- can distinguish WM from IgM MGUS and is likely to be a secondary event.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.cancergencyto.2006.04.009DOI Listing
September 2006
1 Read

Publication Analysis

Top Keywords

igm mgus
20
monoclonal gammopathy
8
undetermined significance
8
significance igm
8
igm monoclonal
8
gammopathy undetermined
8
minimal deletion
8
waldenström macroglobulinemia
8
area minimal
8
igm
7
deletion
6
mgus
5
fluorescence situ
4
situ hybridization
4
hybridization probes
4
probes targeting
4
segments deletions
4
chromosomal segments
4
targeting chromosomal
4
studied fluorescence
4

Similar Publications