Algeta announces that Xofigo® (radium-223 dichloride) has been approved by the US FDA - Seite 2

Efficacy and Safety Data Supporting Xofigo^® Approval

The approval of Xofigo (radium-223 dichloride, radium-223) is based on data from the pivotal phase III ALSYMPCA (ALpharadin in SYMptomatic Prostate CAncer) trial. At the interim analysis, radium-223 significantly improved overall survival (OS) [HR=0.695 (95% CI 0.552-0.875), p=0.00185]; median OS was 14.0 months with radium-223 plus best standard of care vs. 11.2 months with placebo plus best standard of care. Additionally, at the interim analysis there was a delay in the time to first symptomatic skeletal event (SSE) for patients treated with radium-223 vs. placebo.

An updated analysis, conducted after the study was unblinded, showed a further improvement in overall survival (OS) for patients treated with radium-223 vs. placebo, with a median OS of 14.9 months vs. 11.3 months; HR=0.695 (95% CI 0.581-0.832).

The most common adverse reactions (greater than or equal to 10%) in patients receiving radium-223 were nausea, diarrhea, vomiting and peripheral edema. The most common hematologic laboratory abnormalities (greater than or equal to 10%) of radium-223-treated patients were anemia, lymphocytopenia, leukopenia, thrombocytopenia and neutropenia.

About Xofigo^® (radium-223 dichloride)

Xofigo^® with the active ingredient radium-223 dichloride (radium-223) is an alpha particle-emitting radioactive therapeutic agent with an anti-tumor effect on bone metastases. Radium-223 mimics calcium and forms complexes with the bone mineral hydroxyapatite at areas of increased bone turnover, such as bone metastases. The high linear energy transfer of alpha emitters may cause double-strand DNA breaks in adjacent cells, resulting in an anti-tumor effect on bone metastases. The alpha particle range from radium-223 is less than 100 micrometers which may limit the damage to the surrounding normal tissue.

In September 2009, Algeta signed an agreement with Bayer for the development and commercialization of radium-223. Under the terms of the agreement, Bayer will develop, apply for health authority approvals worldwide and commercialize radium-223 globally. Algeta US, LLC will co-promote radium-223 with Bayer in the US.

Radium-223 is currently not approved by the European Medicines Agency (EMA) or other authorities outside the US. Bayer submitted a Marketing Authorization Application to the EMA for radium-223 in December 2012 for the treatment of CRPC patients with bone metastases.

For full prescribing information visit www.xofigo-us.com.  

About the ALSYMPCA Trial