#UpFrontPSMA

Most prostate cancer cells have a molecule on their surface called prostate cancer specific membrane antigen (PSMA). PSMA can be targeted with Lutetium-177 PSMA (Lu-PSMA), a radioactive drug that kills prostate cancer cells anywhere in the body. This investigational drug is not approved for use in Australia by the Federal Government’s Therapeutic Goods Administration (TGA). It is a new form of treatment that is effective in some patients with metastatic prostate cancer. It is a radioactive substance that, after injection into a vein, attaches to prostate specific membrane antigen (PSMA). The treatment enables delivery of highly targeted radiation to cancer cells. The emitted radiation only travels about 1mm, which means it mainly causes the death of cancer cells, while avoiding healthy cells, and seems to be well tolerated with few side effects. This is called radionuclide therapy or theranostic therapy.

The purpose of this randomised controlled clinical trial is to compare the effectiveness of Lu-PSMA therapy followed by docetaxel chemotherapy versus docetaxel chemotherapy on its own. Previous clinical trials have shown promising activity of Lu-PSMA in treatment of patients with metastatic prostate cancer. Docetaxel is a chemotherapy drug that is approved by the TGA to treat prostate cancer and has been used for many years in the treatment of metastatic prostate cancer. Since Lu-PSMA radiotherapy and docetaxel chemotherapy are both effective in treating metastatic prostate cancer, it is possible that using Lu-PSMA in addition to standard docetaxel chemotherapy at the beginning of the treatment course may improve patient outcomes when compared to treatment with docetaxel alone.

A recent phase 2 clinical trial, showed the effectiveness of Lu-PSMA when used as a last treatment option and helped control disease progression. This study brings the use of Lu-PSMA forward as a first option to patients, with the hope of disease eradication and potential cure.

#UpFrontPSMA is now closed to recruitment, and enrolled 130 patients across Australia.