CytomX Therapeutics, Inc. announced that the first clinical candidate in its TCB agreement with Astellas has entered into GLP toxicology studies which triggers a $5 million payment to CytomX. The clinical candidate is the first PROBODY®? TCB molecule under this alliance to progress into a GLP toxicology study.

CytomX and Astellas are also collaborating on additional conditionally activatedTCB programs with CytomX eligible to receive future preclinical, clinical and commercial milestones. CytomX retains a cost share and co-commercialization option on a select number of targets.