Multiple myeloma is characterized by underlying clinical and biological heterogeneity, which translates to variable response to treatment and outcome. With the recent increase in treatment armamentarium and the projected further increase in approved therapeutic agents in the coming years, the issue of having some mechanism to dissect this heterogeneity and rationally apply treatment is coming to the fore. A number of robustly validated prognostic markers have been identified and the use of these markers in stratifying patients into different risk groups has been proposed. In this consensus statement, the International Myeloma Working Group propose well-defined and easily applicable risk categories based on current available information and suggests the use of this set of prognostic factors as gold standards in all clinical trials and form the basis of subsequent development of more complex prognostic system or better prognostic factors. At the same time, these risk categories serve as a framework to rationalize the use of therapies.

Authors:

WJ Chng, A Dispenzieri, C-S Chim, R Fonseca, H Goldschmidt, S Lentzsch, N Munshi, A Palumbo, JS Miguel, P Sonneveld, M Cavo, S Usmani, BGM Durie  and H Avet-Loiseau  on behalf of the International Myeloma Working Group

Leukemia (2014) 28, 269–277; doi:10.1038/leu.2013.247

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