MicroRNAs (miRNAs) are short non-coding RNAs that play critical roles in 
numerous cellular processes through post-transcriptional regulating functions. 
The aberrant role of miRNAs has been reported in a number of hematopoietic 
malignancies including multiple myeloma (MM). In this review we summarize the 
current knowledge on roles of miRNAs in the pathogenesis of MM.