Correction to: Leukemia (2008) 22, 1925–1932; doi:10.1038/leu.2008.174; published online 3 July 2008

Owing to a typesetting error, Figure 2b of the above article was published incorrectly.

Figure 2
figure 1

Effect of lenalidomide and bortezomib on transcription factors during osteoclastogenesis. (a) Lenalidomide (100% at 0 μM, 60.2% at 2 μM and 48.8% at 10 μM), but not bortezomib, resulted in a dose-dependent inhibition of extracellular signal-regulated kinase (ERK) phosphorylation in peripheral blood mononuclear cells (PBMCs) incubated with macrophage colony-stimulating factor (M-CSF) and receptor activator of NF-κB ligand (RANKL) for 3 h. (b) Lenalidomide, but not bortezomib, resulted in a decrease of PU.1 after incubation of PBMCs for 4 days in the presence of RANKL and M-CSF. Conversely, bortezomib, but not lenalidomide, downregulated NFATc1. C-fos was not downregulated by either agent at 5 days.

The correct figure is reproduced here.

The publisher apologizes for this error and any inconvenience it may have caused.