Velcade is a type of cancer drug called a proteasome inhibitor. Proteasomes are enzymes found in cells and play an important role in regulating cell function and growth by controlling the breakdown of important proteins. Velcade blocks the activity of proteasomes and by blocking the proteasome, Velcade disrupts processes related to the growth and survival of cancer cells.
New data also suggest that Velcade may significantly improve bone disease in myeloma patients. Velcade's beneficial effect on bone disease appears to be independent of whether or not a patient's myeloma responds to Velcade. Furthermore, Velcade is as active and safe in patients with myeloma-related kidney damage as in patients with normal kidney function.