PEGPH20 Plus Gemcitabine With Radiotherapy in Patients With Localized, Unresectable Pancreatic Cancer

This is a pilot trial evaluating the safety and potential efficacy of PEGylated Recombinant Human Hyaluronidase (PEGPH20) plus concurrent Gemcitabine and radiotherapy. Recognizing that PEGPH20 has not been previously delivered with radiotherapy but is unlikely to contribute to increased toxicities, this trial will have an abbreviated sequential dose escalation schema for the first three patients. PEGPH20 will be given twice per week for the first 28 days and then weekly for another 2 weeks during radiotherapy. Gemcitabine will be delivered weekly at the first day of radiotherapy and continued weekly, per published literature. Patients will remain on study for three months. The duration of active treatment with PEGPH20 and Gemcitabine plus radiotherapy will continue for 5-6 weeks. Efficacy outcome will occur 6-8 weeks after the completion of radiotherapy.