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Blood, 15 August 2008, Vol. 112, No. 4, pp. 1035-1038. Prepublished online as a Blood First Edition Paper on May 23, 2008; DOI 10.1182/blood-2008-02-140954.
Submitted February 22, 2008
Myeloma Institute for Research and Therapy, University of Arkansas for Medical Sciences, Little Rock * Corresponding author; email: barlogiebart{at}uams.edu.
The clinical outcomes of 169 patients, enrolled in the first clinical trial of thalidomide for advanced or refractory myeloma, are updated. Seventeen patients remain alive and 10 event-free, with a median follow-up of 9.2 years. According to multivariate analysis of pre-treatment variables, cytogenetic abnormalities (CA), present in 47% of patients within 3 months of enrollment, and lambda light chain isotype both affected overall survival and event-free survival adversely. Forty percent of the 58 patients lacking these 2 unfavorable features, one-half of whom had no disease recurrence, survived at least 6 years, in contrast to fewer than 5% among those with 1 or 2 risk features (P<0.0001). Patients who had received cumulative thalidomide doses in excess of 42g in the first 3 months enjoyed superior overall and event-free survival. The poor outcome associated with lambda-type myeloma may relate to its over-representation in molecularly defined high-risk disease gleaned from studies in newly diagnosed myeloma.
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