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Br J Haematol. 2013 Jan;160(1):63-9. doi: 10.1111/bjh.12094. Epub 2012 Oct 24.

Abnormal serum free light chain ratio predicts poor overall survival in mantle cell lymphoma.

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Department of Haematology, Combined Laboratories, Derriford Hospital, Plymouth, Devon, UK.


Serum free light Chain (sFLC) ratios have been correlated with survival outcomes in Hodgkin and non-Hodgkin lymphoma subtypes. This study was undertaken to investigate the prognostic impact of abnormal sFLC ratios in mantle cell lymphoma (MCL). two patient cohorts were analysed for sFLC parameters: a preliminary retrospective cohort and a uniformly treated cohort of 20 relapsed/refractory MCL patients, enrolled in a phase II clinical trial of single agent lenalidomide treatment. 52% of patients had an abnormality of one or more sFLC parameter (71% of the first cohort and 40% of the second cohort). In cohort two, a high baseline SFLC ratio correlated with poorer overall survival (OS) compared to a low/normal ratio (median OS: 1·4 months vs. 19 months respectively; P = 0·001). For patients presenting with an elevated sFLC ratio at trial entry a rise of >35% in the sFLC ratio correlated with disease progression and a sFLC ratio of >2× normal at trial entry correlated with aggressive disease. These data are the first to show a clear clinical correlation between sFLC ratios and survival outcomes in a uniformly treated cohort of MCL patients. We suggest that these markers may be useful in managing patients with MCL in the future.

[Indexed for MEDLINE]

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