( ucted by DrArthur Frankel and his team...)Protox Announces Publication in Journal of the National Cancer,Institute Supporting PRX302 as Treatment for Prostatic Diseases,Health

ucted by Dr Arthur Frankel and his team at the Cancer Research Institute of Scott and White Memorial Hospital in collaboration with scientists at Protox and Johns Hopkins University. Key findings include: human prostate cancer cells are significantly more sensitive to PRX302 in the presence of active PSA; PRX302 was totally resistant to thrombin, matrix metalloprotease 7 (MMP-7), human kallikrein 1 (hk1) and human kallikrein 2 (hk2) activation; and among the normal cells tested, the PSA-producing prostate epithelial cells were the only normal cells that were highly sensitive to PRX302.

Both publications demonstrated that the PSA-activated strategy for PRX302 has a number of inherent advantages as a therapeutic strategy for locally recurrent prostate cancer and BPH.

About Protox

Protox Therapeutics is a leader in advancing novel, targeted protein toxin therapeutics for treatment of cancer and other proliferative diseases. The company is actively developing two distinct but complementary platforms, INxin(TM) and PORxin, and currently has three clinical programs in
development. A Phase IIa clinical trial into the use of PRX321 (INxin) for the treatment of primary brain cancer has been completed and the drug has received Fast Track Designation and Orphan Drug Status from the US FDA. In addition, a Phase I trial has been completed for PRX321 to treat patients with renal cell carcinoma and non-small cell lung cancer. Patient enrolment is underway for a Phase I clinical study into the use of PRX302 (PORxin) to treat localized prostate cancer. PRX302 has also been approved by Health Canada to commence a Phase I clinical study for the treatment of benign prostatic hyperplasia.

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