Halozyme Therapeutics has initiated patient enrollment and dosed the first patient in its Phase I/IIa clinical trial evaluating Chemophase, a novel recombinant investigational therapeutic being developed to enhance chemotherapy delivery.

This second clinical protocol for Chemophase is designed to evaluate multiple intravesical (into the bladder) administrations of Chemophase along with the widely used anticancer drug mitomycin in patients with superficial bladder cancer, and follows the completion of the initial phase I trial of single-administration Chemophase and mitomycin.

The dose-finding study will enroll up to 36 evaluable patients with superficial bladder cancer. The objectives of the study include determining the maximum tolerated dose and dose-limiting toxicities, if any, of escalating doses of Chemophase in combination with mitomycin; establishing the optimal dose of Chemophase with mitomycin to be recommended for future studies; and observing patients for any preliminary evidence of anti-tumor activity of this combination therapy.