Conditions: Stage IV Pancreatic Cancer
Keywords: pancreatic Cancer Stage IV untreated
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 28
Healthy volunteers: no

Brief summary:
Phase 1B: Open label (all patients receive PEGPH20+gemcitabine), dose escalation, safety and tolerability study to determine the safe dose of PEGPH20 to use in combination with gemcitabine in Stage IV previously untreated pancreatic cancer patients.

Phase 2: Randomized, double blind study to compare the effect of overall survival of gemcitabine plus PEGPH20 vs gemcitabine plus placebo in Stage IV previously untreated pancreatic cancer patients.

Detailed description:
PEGPH20 is a PEGylated version of human recombinant PH20 hyaluronidase that, in preclinical studies, has been shown to remove HA from the extracellular matrix surrounding tumor cells by depolymerizing this substrate. 87% of pancreatic ductal adenocarcinomas (PDA) overexpress HA. PDA tumor tissue may be especially sensitive to the HA-degradation properties of PEGPH20 and thus more responsive to the cytotoxic effects of a given dose of gemcitabine. Modifying the extracellular environment to increase the penetration and efficacy of anti-cancer agents represents a novel approach to treating pancreatic cancer and may provide important therapeutic outcomes in patients with Stage IV Previously Untreated Pancreatic Cancer.

This Phase 1B/2 study will assess safety, tolerability, treatment effect, and various PK/PD endpoints.

Arms:
arm 1: Gemcitabine + Placebo arm 2: PEGPH20+Gemcitabine

Interventions: intervention 1: Gemcitabine intervention 2: PEGPH20 intervention 3: Placebo
Intervention descriptions: intervention 1: 1000 mg/m2 given IV one time a week (Cycle 1: 7 weeks on treatment, 1 week off treatment; Cycle 2+: 3 Weeks on treatment, 1 week off treatment) intervention 2: (Cycle 1: 7 weeks on treatment/1 week off treatment; Cycle 2+: 3 Weeks on treatment/1 week off treatment). Doses start at 1.0 mcg/kg and modified until recommended Phase 2 dose is determined. Treatment continues until occurrence of significant treatment-related toxicity, progressive disease, or discontinuation criteria are met intervention 3: (Cycle 1: 7 weeks on treatment/1 week off treatment; Cycle 2+: 3 Weeks on treatment/1 week off treatment).

Protocol document: