SEATTLE--NeoRx Corporation reports that in phase I/II dose escalation studies, Avicidin produced a 10-fold improvement in tumor-to-blood ratios over conventional radioimmunotherapy, approaching the ratios achieved in animal studies.
Avicidin, a monoclonal antibody/yttrium-90 product, employs NeoRx's proprietary pretargeting technology in which the radionuclide and antibody are injected separately rather than linked together. The radionuclide either attaches to the antibody that is pretargeted to the tumor or quickly exits the body, reducing radiation exposure to normal tissues, NeoRx said.
