Pancreatic Cancer Research

Clinical trialPhase 2Completed

PEGPH20 Plus Nab-Paclitaxel Plus Gemcitabine Compared With Nab-Paclitaxel Plus Gemcitabine in Participants With Stage IV Untreated Pancreatic Cancer

A Phase 2, Randomized, Multicenter Study of PEGPH20 (PEGylated Recombinant Human Hyaluronidase) Combined With Nab-Paclitaxel Plus Gemcitabine Compared With Nab-Paclitaxel Plus Gemcitabine in Subjects With Stage IV Previously Untreated Pancreatic Cancer

Outcome
Outcome unknown
Phase
Phase 2
Status
Completed
Study type
Interventional
Start
14 May 2013
Expected end
26 September 2018
Enrollment
279 participants
Sites
51
Primary outcomes
Progression-Free Survival (PFS); Percentage of Participants in the PAG Arm Who Experienced Any Thromboembolic (TE) Event in Stage 2 of the Study
Sponsor
Industry
Results posted
2020-07-20
Last update
20 July 2020

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Brief summary public domain (ClinicalTrials.gov)

This study is designed to compare the treatment effect of PEGPH20 combined with nab-paclitaxel (NAB) and gemcitabine (GEM) \[PAG\] to NAB and GEM \[AG\] in participants with Stage IV previously untreated pancreatic ductal adenocarcinoma (PDA). The study will have 2 run-in phases, one for each formulation of PEGPH20 (original and new formulations), and a Phase 2 portion. The 2 run-in phases will evaluate the safety and tolerability of the PAG treatment using the original and new succinic acid PEGPH20 formulation, respectively, compared with AG treatment. Phase 2 will have 2 stages due to a partial clinical hold that occurred from April through July 2014. The participants will be randomized in 3:1 for the run-in phases. The first stage will randomize participants in a 1:1 ratio. The second stage will randomize participants in a 2:1 ratio (PAG:AG). This is an open-label study. To minimize bias to the progression-free survival endpoint, disease progression will be based on the assessment of the Central Imaging Reader (CIR). Determination of clinical progression by the Investigator without corresponding CIR confirmation will be documented with the relevant signs and symptoms.

Posted results (ClinicalTrials.gov registry) · primary outcome public domain (ClinicalTrials.gov)

Progression-Free Survival (PFS) [From the date of randomization until disease progression or death from any cause (maximum exposure: 30.72 months for PAG, and 20.27 months for AG)]. Median, months (95% Confidence Interval). PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine (n=139): 6.05 (5.36 to 7.20); AG: Nab-paclitaxel + Gemcitabine (n=92): 5.26 (3.91 to 6.54). Analysis, PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine vs AG: Nab-paclitaxel + Gemcitabine: Hazard Ratio (HR) 0.74 (95% CI 0.54 to 1.01); p=0.058; Log Rank; other.

Posted results (ClinicalTrials.gov registry) · primary outcome public domain (ClinicalTrials.gov)

Percentage of Participants in the PAG Arm Who Experienced Any Thromboembolic (TE) Event in Stage 2 of the Study [From first exposure to any study drug (PEGPH20, NAB, GEM) through 30 days after end of treatment visit (maximum exposure: 30.72 months for PAG)]. Number, percentage of participants. PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine (n=86): 14.0.

Posted results (ClinicalTrials.gov registry) · secondary outcome public domain (ClinicalTrials.gov)

PFS in Relation to Tumor Hyaluronan (HA) Levels [From the date of randomization until disease progression or death from any cause (maximum exposure: 30.72 months for PAG, and 20.27 months for AG)]. Median, months (95% Confidence Interval). HA-High: PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine (n=153): 9.23 (5.98 to 10.55); AG: Nab-paclitaxel + Gemcitabine (n=93): 5.19 (3.52 to 6.54). HA-Low: PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine (n=153): 5.59 (4.70 to 7.03); AG: Nab-paclitaxel + Gemcitabine (n=93): 5.26 (3.78 to 7.33). Analysis, PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine vs AG: Nab-paclitaxel + Gemcitabine: Hazard Ratio (HR) 0.57 (95% CI 0.30 to 1.10); p=0.092; Log Rank; other. Analysis, PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine vs AG: Nab-paclitaxel + Gemcitabine: Hazard Ratio (HR) 0.88 (95% CI 0.59 to 1.31); p=0.514; Log Rank; other.

Posted results (ClinicalTrials.gov registry) · secondary outcome public domain (ClinicalTrials.gov)

Objective Response Rate (ORR): Percentage of Participants With Objective Response [From the date of randomization until last date on study treatment (maximum exposure: 30.72 months for PAG, and 20.27 months for AG)]. Number, percentage of participants (95% Confidence Interval). PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine (n=166): 40.4 (32.83 to 48.24); AG: Nab-paclitaxel + Gemcitabine (n=113): 32.7 (24.21 to 42.21). Analysis, PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine vs AG: Nab-paclitaxel + Gemcitabine: Risk Ratio (RR) 1.22 (95% CI 0.88 to 1.68); p=0.225; Cochran-Mantel-Haenszel; other.

Posted results (ClinicalTrials.gov registry) · secondary outcome public domain (ClinicalTrials.gov)

Overall Survival [From randomization until death from any cause (maximum exposure: 30.72 months for PAG, and 20.27 months for AG)]. Median, months (95% Confidence Interval). PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine (n=166): 9.59 (8.15 to 12.06); AG: Nab-paclitaxel + Gemcitabine (n=113): 9.23 (7.59 to 10.71). Analysis, PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine vs AG: Nab-paclitaxel + Gemcitabine: Hazard Ratio (HR) 0.91 (95% CI 0.70 to 1.19); p=0.495; Log Rank; other.

Posted results (ClinicalTrials.gov registry) · secondary outcome public domain (ClinicalTrials.gov)

Percentage of Participants With AEs [From first exposure to any study drug (PEGPH20, NAB, GEM) through 30 days after end of treatment visit (maximum exposure: 30.72 months for PAG and 20.27 months for AG)]. Number, percentage of participants. PAG: PEGPH20 + Nab-paclitaxel + Gemcitabine (n=160): 99.4; AG: Nab-paclitaxel + Gemcitabine (n=100): 98.0.

Posted results (ClinicalTrials.gov registry) · secondary outcome public domain (ClinicalTrials.gov)

Maximum Observed Plasma Concentration (Cmax) of PEGPH20 [Pre-PEGPH20 dosing and 15 minutes, 1 hour, 2 hours, and 4 hours post-PEGPH20 dosing on Days 1 and 15 of Cycle 1]. Mean, nanograms/milliliter (ng/mL) (Standard Deviation). Day 1: Run-in Phase 1-PAG: PEGPH20 (Original Formulation) + NAB + GEM (n=6): 72.1 (16.90); Run-in Phase 2- PAG: PEGPH20 (New Formulation) + NAB + GEM (n=8): 67.8 (17.60). Day 15: Run-in Phase 1-PAG: PEGPH20 (Original Formulation) + NAB + GEM (n=6): 82.9 (25.42); Run-in Phase 2- PAG: PEGPH20 (New Formulation) + NAB + GEM (n=8): 84.1 (7.70).

Posted results (ClinicalTrials.gov registry) · secondary outcome public domain (ClinicalTrials.gov)

Time to Reach Cmax (Tmax) of PEGPH20 [Pre-PEGPH20 dosing and 15 minutes, 1 hour, 2 hours, and 4 hours post-PEGPH20 dosing on Days 1 and 15 of Cycle 1]. Median, hours (Full Range). Day 1: Run-in Phase 1-PAG: PEGPH20 (Original Formulation) + NAB + GEM (n=6): 0.430 (0.33 to 4.17); Run-in Phase 2- PAG: PEGPH20 (New Formulation) + NAB + GEM (n=8): 0.865 (0.33 to 4.20). Day 15: Run-in Phase 1-PAG: PEGPH20 (Original Formulation) + NAB + GEM (n=6): 0.790 (0.00 to 1.93); Run-in Phase 2- PAG: PEGPH20 (New Formulation) + NAB + GEM (n=8): 0.810 (0.42 to 2.28).

Posted results (ClinicalTrials.gov registry) · secondary outcome public domain (ClinicalTrials.gov)

Area Under the Concentration-Time Curve From Time 0 to Last Quantifiable Concentration (AUC0-last) of PEGPH20 [Pre-PEGPH20 dosing and 15 minutes, 1 hour, 2 hours, and 4 hours post-PEGPH20 dosing on Days 1 and 15 of Cycle 1]. Mean, hours*ng/mL (Standard Deviation). Day 1: Run-in Phase 1-PAG: PEGPH20 (Original Formulation) + NAB + GEM (n=6): 1837.93575 (374.093974); Run-in Phase 2- PAG: PEGPH20 (New Formulation) + NAB + GEM (n=8): 2143.30319 (491.270018). Day 15: Run-in Phase 1-PAG: PEGPH20 (Original Formulation) + NAB + GEM (n=6): 2807.94210 (687.004217); Run-in Phase 2- PAG: PEGPH20 (New Formulation) + NAB + GEM (n=8): 2423.01690 (261.783892).