Quantitative imaging of these cells identifies drug efficacy more quickly and has ramifications for clinical trials and bringing the agent to market, the firms said.

ImaginAb will supply clinical doses of Zr-89 CD8 Immuno-PET agent to Pfizer for use in select oncology clinical trials along with technical, clinical, and regulatory support. ImaginAb will receive license fees and payments for manufacturing and other support.

The agreement expands upon a precompetitive alliance between ImaginAb, Pfizer, and other global pharmaceutical companies that focused on the development of Zr-89 CD8 ImmunoPET.