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03 February 2009

Publication of largest Light Chain Escape – Multiple Myeloma study to date

'Light-chain escape-multiple myeloma''Light-chain escape-multiple myeloma' - an escape phenomenon from plateau phase: report of the largest patient series using LC-monitoring.
A. Kühnemund et al. J Cancer Res Clin Oncol 2008, Sep 18.
doi 10.1007/s00432-008-0470-7

This article describes 10 patients with Intact Immunoglobulin Multiple Myeloma who developed light chain escape at relapse (LCE-MM). Their Multiple Myeloma appeared stable, as judged by conventional monitoring of intact Ig levels, but developed severe organ dysfunction as a consequence of initially undetected light chain progression. Serum free light chain (SFLC) changes were one of the measures studied.
The authors commented "Classic diagnostics, such as electrophoresis and quantitative Ig measurements proved futile to detect LC-progression, whereas SFLC's were reliable markers"

"Our report suggests that early detection of LCE-MM by means of serial SFLC measurements may prevent unnecessary complications, allows to detect unusual relapse manifestations in the era of intensive and biological therapy options and possibly also permits to improve treatment results in LCE-MM."

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More information on Freelite and Light Chain Escape plus Clinical Evidence for SFLCs in other B cell dyscrasia.