ALSYMPCA - for healthcare professionals.

Algeta commenced the global ALSYMPCA (ALpharadin in SYMptomatic Prostate CAncer) study in June 2008. This study is a phase III double-blind, placebo controlled trial enrolling men with bone metastases who have CRPC (castration-resistant prostate cancer).


The primary efficacy endpoint of the ALSYMPCA trial is overall survival. Patients are being randomized 2-to-1 in favor of Alpharadin®, which is administered as a single intravenous injection every four weeks for six cycles.

Secondary endpoints include time to occurrence of specified disease-related events, and time to progression of certain key biomarkers indicative of disease status, including blood levels of serum PSA (prostate-specific antigen) and bone alkaline phosphatase (ALP).

In addition, the trial is monitoring and evaluating both the acute and long-term safety profiles of Alpharadin® treatment as well as its impact on quality of life.






Phase I and II program

The Alpharadin® phase I and II program involved over 340 patients.

Key findings were that:

  • Alpharadin® treatment showed significant increased survival – median of 4.5 months vs placebo (p=0.017); current gold standard treatment (docetaxel) provides approx. 10 weeks survival benefit.
  • In all trials conducted to date, Alpharadin® was consistently well-tolerated with a benign side-effect profile, e.g. constipation (Please see the Lancet article for further information). This side-effect profile combined with efficacy suggests Alpharadin® has an ideal profile for use alone or in combination with current cancer therapies (e.g. bisphosphonates, docetaxel, opioids)
  • Alpharadin® alleviated pain in a dose-dependent manner thereby improving patient quality of life.
  • Blood levels of several biomarkers indicated of a positive therapeutic effect, such as reduction of PSA and bone ALP levels.