Editor's Note: Guggulsterone inhibits osteoclastogenesis induced by receptor activator of nuclear factor-KB ligand and by tumor cells by suppressing nuclear factor-KB activation

The Clinical Cancer Research editors are publishing this note to alert readers to a concern about this article (1). Institutional review determined that the same image was used to represent inhibition of RANKL-induced osteoclastogenesis by p65 and PTD in Fig. 5A. The authors were unable to provide original data for these images at the time of institutional review.