Abstract：
:During the course of multiple myeloma (MM), new monoclonal proteins of an isotype distinct from the original clone, referred to as secondary monoclonal gammopathy of undetermined significance (MGUS), have been described. We report on the frequency, characteristics, and outcome of secondary MGUS. Of the 1942 patients with MM, 128 (6.6%) developed a secondary MGUS, at a median of 12 months from the diagnosis of MM. The median duration of secondary MGUS was 5.9 months. Secondary MGUS was more common in patients after stem cell transplantation than in those who had not undergone such treatment (22.7% vs 1.6%, P < .001). Overall survival was significantly superior in MM patients who developed secondary MGUS compared with the rest of the cohort (73 vs 38 months, respectively; P < .001). The time of onset and the duration of secondary MGUS, as well as failure to resolve spontaneously, had an effect on overall survival and require further study.
journal_name
Bloodjournal_title
Bloodauthors
Wadhera RK,Kyle RA,Larson DR,Dispenzieri A,Kumar S,Lazarus HM,Rajkumar SVdoi
10.1182/blood-2011-04-349175subject
Has Abstractpub_date
2011-09-15 00:00:00pages
2985-7issue
11eissn
0006-4971issn
1528-0020pii
blood-2011-04-349175journal_volume
118pub_type
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