Approval Probability
TA Base Rate
Adjusted LOA
ML Risk
Also known as PEGylated recombinant human hyaluronidase, PEGylated recombinant human hyaluronidase PH20
PEGPH20 · 5 trials · 5 indications
PFS: time from randomization until first occurrence of disease progression, either by central radiologic determination (Response Evaluation Criteria in Solid Tumours \[RECIST\] version 1.1) or by clinical progression determined by Investigator, or death during treatment period from any cause. Radiological disease progression was defined as at least a 20 percent (%) increase in sum of diameters of target lesions, taking as reference the smallest sum on study thus far, nadir (this included baseline sum if that was the smallest on study); Sum must also demonstrate an absolute increase of at least 5 millimeters (mm); Appearance of one or more new lesions; Unequivocal progression of existing non-target lesions. Surviving participants without disease progression were censored for PFS analysis at the date of last evaluable post-baseline tumor assessment. Surviving participants without any post-baseline disease assessment were censored on Day 1. PFS was estimated using Kaplan-Meier (KM) method.
TE events were identified by applying the Medical Dictionary for Regulatory Activities (MedDRA) Standardized MedDRA Queries (SMQ) search strategy for 3 SMQs: TE arterial, TE venous, and TE vessel type unspecified and mixed arterial and venous. TE events were considered by the Sponsor to be adverse events (AEs) of special interest. All TE events, regardless of type of event, severity, or seriousness were reported. Participants with multiple events were counted only once. A summary of serious and all other non-serious adverse events regardless of causality is located in the 'Reported AE section'.
DLTs were defined as any of the following: i) Any treatment-emergent Grade greater than or equal to (≥) 3 toxicity that was considered related to either PEGPH20 or pembrolizumab or the combination of PEGPH20 and pembrolizumab (nausea, vomiting, MSEs, and diarrhea were considered DLTs only if they reached Grade ≥ 3 despite adequate supportive care measures); ii) Grade 3 musculoskeletal events (MSEs) were considered DLTs only if they did not reduce to Grade ≤ 2 within 48 hours despite therapeutic intervention; iii) Hypersensitivity/infusion reactions related to PEGPH20 or pembrolizumab dosing were not considered DLTs (hypersensitivity reactions were generally not related to the dose level of a drug since they could occur even upon a low level of exposure).
MTD of PEGPEM combination (PEGPH20 + Pembrolizumab) was defined as the highest dose level at which no more than 1 of 6 evaluable participants had experienced a DLT in the first 3 weeks of treatment. DLT was defined as any of the following: i) Any treatment-emergent Grade greater than or equal to (≥) 3 toxicity that was considered related to either PEGPH20 or pembrolizumab or the combination of PEGPH20 and pembrolizumab (nausea, vomiting, MSEs, and diarrhea were considered DLTs only if they reached Grade ≥ 3 despite adequate supportive care measures); ii) Grade 3 musculoskeletal events (MSEs) were considered DLTs only if they did not reduce to Grade ≤ 2 within 48 hours despite therapeutic intervention; iii) Hypersensitivity/infusion reactions related to PEGPH20 or pembrolizumab dosing were not considered DLTs (hypersensitivity reactions were generally not related to the dose level of a drug since they could occur even upon a low level of exposure).
The RP2D was determined based on the overall safety profile of the participants enrolled during the dose-escalation part of the study.
ORR was defined as percentage of participants who achieved either a complete response (CR) or partial response (PR), as assessed by investigator based on RECIST version 1.1. CR was defined as disappearance of all target and non-target lesions; Any pathological or non-pathological lymph nodes (whether target or non-target) must have reduction in short axis to less than (\<) 10 millimeters (mm). PR was defined as at least a 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters.
The safety and tolerability profile of PEGPH20 used in combination with gemcitabine was assessed by measuring the number of participants with a DLT during the dose-escalation phase of the study. A DLT was defined as any treatment-emergent National Cancer Institute (NCI) Common Terminology Criteria for Adverse Event (CTCAE), Version 4.0, Grade 3 or greater event occurring within the first 4 weeks of treatment that was considered related to PEGPH20. Any PEGPH20 treatment-related AE that resulted in a drug interruption or reduction might have been considered a DLT at the Investigator's or Sponsor's discretion. Hypersensitivity/infusion reactions related to PEGPH20 dosing were not considered DLTs.
The safety and tolerability profile of PEGPH20 used in combination with gemcitabine was assessed by determining the RP2D, the highest dose level at which no more than 1 of 6 evaluable participants experienced a DLT in the first 4 weeks of treatment (considered a safe dose). The RP2D was determined based on review of safety and pharmacokinetic (PK) data from participants enrolled during the dose-escalation phase of the study.
The PEGPH20 monotherapy MTD is the highest dose at which no more than one of six evaluable patients experience Dose-Limiting Toxicity (DLT)
All safety data will be evaluated using the NCI CTCAE scoring system (version 4.0)
| Arm | Type | Description |
|---|---|---|
| Run-in Phase - PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine | EXPERIMENTAL | Participants will receive 3.0 micrograms/kilogram (mcg/kg) PEGPH20 with 125 milligrams/square meter (mg/m\^2) NAB and 1000 mg/m\^2 GEM as intravenous (IV) infusion. In Cycle 1 Week 1, PEGPH20 will be administered alone on Days 1 and 4 and NAB+GEM will be given on Day 2 at approximately 24 hours after first dose of PEGPH20. In Cycle 1 Weeks 2 and 3, PEGPH20 will be given twice/week on Days 8, 11, 15 and 18 and NAB+GEM will be given once/week at 2 to 4 hours after PEGPH20 administration on Days 8 and15. In Cycle 2 onwards, PEGPH20, NAB, and GEM will be given once/week on Days 1 8 and 15. NAB+GEM will be given 2 to 4 hours after PEGPH20 dose. Each cycle will be of 4-weeks with Week 4 of every cycle as a rest week (no treatment will be given). Treatment will continue until documented disease progression or unacceptable toxicity. Dexamethasone 8 mg will be given in each cycle within 2 hours prior and 8 to 12 hours after completion of each PEGPH20 infusion. |
| Run-in Phase - AG: Nab-paclitaxel + Gemcitabine | ACTIVE_COMPARATOR | Participants will receive 125 mg/m\^2 NAB and 1000 mg/m\^2 GEM, as an IV infusion once weekly on Days 1, 8, and 15 of each cycle. Each cycle will be of 4-weeks (28 days) with Week 4 of every cycle as a rest week (that is; no treatment will be given). Treatment will continue until documented disease progression or unacceptable toxicity. Dexamethasone 8 mg will be given in each cycle within 2 hours prior to the beginning of each NAB infusion and 8 to 12 hours after the completion of GEM infusion. |
| Phase 2: Stage 1 - PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine | EXPERIMENTAL | Participants will receive 3.0 mcg/kg PEGPH20 with 125 mg/m\^2 NAB and 1000 mg/m\^2 GEM as an IV infusion. In Cycle 1 Week 1, PEGPH20 will be given alone on Days 1 and Day 4 and NAB+GEM will be given on Day 2 at approximately 24 hours after first dose of PEGPH20. In Cycle 1 Weeks 2 and 3, PEGPH20 will be given twice/week on Days 8, 11, 15, and 18 and NAB+GEM will be given once/week at 2 to 4 hours after PEGPH20 administration on Days 8 and 15. In Cycle 2 onwards, PEGPH20, NAB, and GEM will be given once/week on Days 1, 8, and 15. NAB+GEM will be given 2 to 4 hours after dose of PEGPH20. Each cycle will be of 4-weeks with Week 4 of every cycle as a rest week (no treatment will be given). Treatment will continue until documented disease progression or unacceptable toxicity. Dexamethasone 8 mg will be given in each cycle within 2 hours prior to the beginning and 8 to 12 hours after the completion of each PEGPH20 infusion. |
| Phase 2: Stage 1 - AG: Nab-paclitaxel + Gemcitabine | ACTIVE_COMPARATOR | Participants will receive 125 mg/m\^2 NAB and 1000 mg/m\^2 GEM as an IV infusion once weekly on Days 1, 8, and 15 of each cycle. Each cycle will be of 4-weeks (28 days) with Week 4 of every cycle as a rest week (that is; no treatment will be given). Treatment will continue until documented disease progression or unacceptable toxicity. Dexamethasone 8 mg will be given in each cycle within 2 hours prior to the beginning of each NAB infusion and 8 to 12 hours after the completion of GEM infusion. |
| Phase 2: Stage 2 - PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine | EXPERIMENTAL | Participants will receive 3.0 mcg/kg PEGPH20 with 125 mg/m\^2 NAB and 1000 mg/m\^2 GEM as an IV infusion. In Cycle 1 Week 1, PEGPH20 will be given alone on Days 1 and 4 and NAB+GEM will be given on Day 2 at approximately 24 hours after first dose of PEGPH20. In Cycle 1 Weeks 2 and 3, PEGPH20 will be given twice/week on Days 8, 11, 15, and 18 and NAB+GEM will be given once/week at 2 to 4 hours after PEGPH20 administration on Days 8 and 15. In Cycle 2 onwards, PEGPH20, NAB, and GEM will be given once/week on Days 1, 8, and 15. NAB+GEM will be given 2 to 4 hours after dose of PEGPH20. Each cycle will be of 4-weeks with Week 4 of every cycle as a rest week (no treatment will be given). Treatment will continue until documented disease progression or unacceptable toxicity. Dexamethasone 8 mg will be given in each cycle within 2 hours prior to beginning and 8 to 12 hours after completion of each PEGPH20 infusion. Enoxaparin 40 mg/day or 1 mg/kg/day will be given subcutaneously (SC). |
| Phase 2: Stage 2 - AG: Nab-paclitaxel + Gemcitabine | ACTIVE_COMPARATOR | Participants will receive 125 mg/m\^2 NAB and 1000 mg/m\^2 GEM as an IV infusion once weekly on Days 1, 8, and 15 of each cycle. Each cycle will be of 4-weeks (28 days) with Week 4 of every cycle as a rest week (that is; no treatment will be given). Treatment will continue until documented disease progression or unacceptable toxicity. Dexamethasone 8 mg will be given in each cycle within 2 hours prior to the beginning of each NAB infusion and 8 to 12 hours after the completion of GEM infusion. Enoxaparin 40 mg/day or 1 mg/kg/day will be given SC. |
| GAC: PEGPH20 1.6 µg/kg/2.2 µg/kg + Pembrolizumab | EXPERIMENTAL | Dose escalation part: Participants with relapsed/refractory locally advanced or metastatic gastric adenocarcinoma (GAC) will receive PEGPH20 1.6 micrograms/kilogram (µg/kg) or 2.2 µg/kg on Day 1, Day 8 and Day 15 of each 21-day cycle (i.e. 3 doses/cycle) and pembrolizumab 2 milligrams/kilogram (mg/kg) every 21 days on Day 1 of each cycle (i.e. 1 dose/cycle), 4-6 hours after the completion of PEGPH20 administration. Dose expansion part: Participants with relapsed/refractory locally advanced or metastatic GAC will receive PEGPH20 2.2 µg/kg on Day 1, Day 8 and Day 15 of each 21-day cycle and pembrolizumab 200 mg on Day 1 of each cycle, 4-6 hours after the completion of PEGPH20 administration. Treatment in both phases of the study will continue until death, withdrawal of consent from the study, disease progression, or unacceptable toxicity (maximum exposure: 60 weeks). |
| NSCLC: PEGPH20 1.6 µg/kg/2.2 µg/kg + Pembrolizumab | EXPERIMENTAL | Dose escalation part: Participants with relapsed/refractory Stage IIIB or IV non-small cell lung cancer (NSCLC) will receive PEGPH20 1.6 µg/kg or 2.2 µg/kg on Day 1, Day 8 and Day 15 of each 21-day cycle (i.e. 3 doses/cycle) and pembrolizumab 2 mg/kg every 21 days on Day 1 of each cycle (i.e. 1 dose/cycle), 4-6 hours after the completion of PEGPH20 administration. Dose expansion part: Participants with relapsed/refractory Stage IIIB or IV NSCLC will receive PEGPH20 2.2 µg/kg on Day 1, Day 8 and Day 15 of each 21-day cycle and pembrolizumab 200 mg on Day 1 of each cycle, 4-6 hours after the completion of PEGPH20 administration. Treatment in both phases of the study will continue until death, withdrawal of consent from the study, disease progression, or unacceptable toxicity (maximum exposure: 46 weeks). |
| Gemcitabine | ACTIVE_COMPARATOR | Gemcitabine + Placebo |
| PEGPH20 | EXPERIMENTAL | PEGPH20+Gemcitabine |
| Maximally Tolerated Dose | OTHER | To identify the maximally tolerated dose (MTD) of PEGPH20. |
| 1 | OTHER | Dose determination |
| Name | Type | Description |
|---|---|---|
| PEGPH20 | DRUG | PEGPH20 will be administered as per the dose and schedule specified in the respective arms. |
| Nab-paclitaxel | DRUG | Nab-paclitaxel will be administered as per the dose and schedule specified in the respective arms. |
| Gemcitabine | DRUG | Gemcitabine will be administered as per the dose and schedule specified in the respective arms. |
| Dexamethasone | DRUG | Dexamethasone will be administered as per the dose and schedule specified in the respective arms. |
| Enoxaparin | DRUG | Enoxaparin will be administered as per the dose and schedule specified in the respective arms. |
| Pembrolizumab | DRUG | Pembrolizumab will be administered as an IV infusion as per the dose schedule specified in the arm description. |
| Placebo | DRUG | (Cycle 1: 7 weeks on treatment/1 week off treatment; Cycle 2+: 3 Weeks on treatment/1 week off treatment). |
Key Inclusion Criteria: * Signed Informed consent. * Histologically confirmed Stage IV PDA with documented disseminated neoplasm to liver and /or lung. Must have archival or fresh tissue (block /slides) available pre-dose. * One or more metastatic tumors measurable on computed tomography (CT) scan ...
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PEGPH20 is an investigational oncology drug studied in metastatic pancreatic cancer, stage IV pancreatic cancer, non-small cell lung cancer, gastric cancer, and advanced solid tumors. It has been evaluated in combination with chemotherapy agents such as gemcitabine and nab-paclitaxel, and with pembrolizumab in hyaluronan high tumors.
PEGPH20 targets rHuPH20, a pegylated recombinant human hyaluronidase enzyme. By degrading hyaluronan in the tumor microenvironment, the drug is designed to reduce tumor-associated tissue pressure and improve delivery of co-administered therapies such as chemotherapy or checkpoint inhibitors.
PEGPH20 is developed by Halozyme Therapeutics, Inc., which trades under the ticker HALO. The company has sponsored the clinical program evaluating PEGPH20 across pancreatic cancer, non-small cell lung cancer, gastric cancer, and advanced solid tumors.
PEGPH20 has been studied in Phase 1 and Phase 2 clinical trials. It is an investigational agent and is not described as approved; the completed studies include a Phase 2 trial in metastatic pancreatic cancer and Phase 1 trials in solid tumors and hyaluronan high tumors.
PEGPH20 has been evaluated in completed trials including NCT01839487, a Phase 2 study in stage IV untreated pancreatic cancer with 279 participants, NCT02563548, a Phase 1 study with pembrolizumab in hyaluronan high solid tumors, NCT01453153, a Phase 1 pancreatic cancer study, and NCT01170897, a Phase 1 advanced solid tumor study.
Across the reported studies, PEGPH20 trials enrolled a total of 279 participants in the Phase 2 pancreatic cancer study, 56 in the Phase 1 pembrolizumab combination study, 28 in a Phase 1 pancreatic cancer study, and 27 in a Phase 1 advanced solid tumor study.