Abstract
The prognostic value of baseline serum free light chain ratio (sFLCR) was investigated in 94 multiple myeloma (MM) patients. sFLCR was calculated as kappa/lambda or lambda/kappa, depending on the patients' dominating monoclonal light chain. Median baseline sFLCR was 3.57 in kappa-MM patients, 45.09 in lambda-MM. 'High' sFLCR (> or = the observed median value for kappa- and lambda-MM respectively) correlated with elevated serum creatinine and lactate dehydrogenase, extensive marrow infiltration and light chain type MM. The 5-year disease-specific survival was 82% and 30% in patients with sFLCR lower than and equal or greater than the median, respectively (P = 0.0001). sFLCR was an independent prognostic factor.
Published Version
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