Amgen (NASDAQ: AMGN) today published a press release that said the U.S. Food and Drug Administration (FDA) will target an action date of April 26, 2012 for the supplemental Biologics License Application (sBLA) (approval) to expand the indication for XGEVA® (denosumab) to treat men with castrate-resistant prostate cancer with the goal of reducing the risk of developing bone metastases. Bone is of the most common places for prostate cancer to spread. If Xgeva is approved in this expanded indication, it would become the first therapy licensed to prevent or delay the spread of prostate cancer metastases to bone.

Xgeva is the first and only RANK Ligand inhibitor approved by the FDA indicated for the prevention of skeletal-related events (SREs) in patients with bone metastases from solid tumors. It is a fully human monoclonal antibody that binds to RANK Ligand, a protein essential for the formation, function and survival of osteoclasts (the cells that break down bone). XGEVA prevents RANK Ligand from activating its receptor, RANK, on the surface of osteoclasts, thereby decreasing bone destruction.

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