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Zephyrus I: Evaluation of Efficacy and Safety of Pamrevlumab in Participants With Idiopathic Pulmonary Fibrosis (IPF)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT03955146
Recruitment Status : Terminated (Study did not meet its primary endpoint.)
First Posted : May 17, 2019
Last Update Posted : March 19, 2024
Information provided by (Responsible Party):

Brief Summary:
This is a Phase 3 trial to evaluate the efficacy and safety of 30 milligrams (mg)/kilogram (kg) intravenous (IV) infusions of pamrevlumab administered every 3 weeks as compared to placebo in participants with IPF.

Condition or disease Intervention/treatment Phase
Idiopathic Pulmonary Fibrosis Drug: Pamrevlumab Drug: Placebo Phase 3

Detailed Description:

This is a Phase 3, randomized, double-blind, placebo-controlled, multi-center trial to evaluate the efficacy and safety of pamrevlumab in participants with IPF.

Participants who are not being treated with approved IPF therapies (that is, nintedanib or pirfenidone) may be eligible for screening. Examples of reasons participants may not be treated with approved IPF therapies include but are not limited to:

  • Intolerant or not responsive to approved IPF therapies
  • Ineligible to receive these therapies
  • Participant voluntarily declines to receive approved IPF therapies after being fully informed of the potential benefits/risks

NOTE: No participant should discontinue an approved IPF therapy for the purpose of enrolling in this study.

The study consists of the following study periods:

  • Main (double blind, placebo-controlled) phase:

    • Screening period: Up to 6 weeks
    • Treatment period: 48 weeks
  • Optional, open-label extension (OLE) phase of pamrevlumab:

    o Access to pamrevlumab will be available until the last participant completes 48 weeks of treatment in the OLE phase, or pamrevlumab is commercially available for the indication of IPF, or the Sponsor decides to end the OLE phase, whichever occurs first.

  • Follow-up period/final safety assessments:

    • 28 days after last dose
    • 60 days after last dose: follow-up phone call, for a final safety assessment

During the treatment period, co-administration of an approved IPF therapy (that is, pirfenidone or nintedanib) is acceptable if clinically indicated in the Investigator's opinion, provided that the Investigator assesses the potential risks/benefits of combining approved IPF therapies with blinded study treatment.

Participants who discontinue study treatment for any reason should be encouraged to remain in the study and be followed for all study visits and assessments.

Participants who complete the Week 48 visit of the main study (regardless of the number of study drug infusions received) will be eligible to participate in the optional OLE phase of the study that offers continuing access to pamrevlumab regardless of randomization assignment in the main study.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 356 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Phase 3, Randomized, Double-Blind, Placebo-Controlled Efficacy and Safety Study of Pamrevlumab in Subjects With Idiopathic Pulmonary Fibrosis (IPF)
Actual Study Start Date : June 18, 2019
Actual Primary Completion Date : March 20, 2023
Actual Study Completion Date : August 28, 2023

Arm Intervention/treatment
Experimental: Pamrevlumab
Pamrevlumab 30 mg/kg by IV infusion every 3 weeks for a total of up to 17 infusions over 48 weeks
Drug: Pamrevlumab
Pamrevlumab will be administered per dose and schedule specified in the arm description.
Other Name: FG-3019

Experimental: Placebo
Placebo matching to pamrevlumab by IV infusion every 3 weeks for a total of up to 17 infusions over 48 weeks
Drug: Placebo
Placebo matching to pamrevlumab will be administered per schedule specified in the arm description.

Primary Outcome Measures :
  1. Change From Baseline in Forced Vital Capacity (FVC) at Week 48 [ Time Frame: Baseline, Week 48 ]

Secondary Outcome Measures :
  1. Time to Disease Progression [ Time Frame: Baseline to Week 48 ]
    Time to disease progression was defined as absolute percent predicted FVC (FVCpp) decline of ≥10% or death, whichever occurs first.

  2. Change From Baseline in Quantitative Lung Fibrosis (QLF) Volume at Week 48 [ Time Frame: Baseline, Week 48 ]
  3. Time to Any Component of the Clinical Composite Endpoint, Whichever Occurs First: Acute IPF Exacerbation, Respiratory Hospitalization, or Death [ Time Frame: Baseline to Week 48 ]
  4. Time to First Acute IPF Exacerbation During Study [ Time Frame: Baseline to Week 48 ]
  5. Time to All-cause Mortality During Study [ Time Frame: Baseline to Week 48 ]
  6. Time to First Respiratory Hospitalizations During Study [ Time Frame: Baseline to Week 48 ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   40 Years to 85 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Key Inclusion Criteria:

  1. Diagnosis of IPF as defined by American Thoracic Society (ATS)/European Respiratory Society (ERS)/Japan Radiological Society (JRS)/Latin American Thoracic Association (ALAT) guidelines within the past 7 years prior to study participation.
  2. High-resolution computed tomography (HRCT) scan at screening, with ≥10% to <50% parenchymal fibrosis (reticulation) and <25% honeycombing.
  3. FVCpp value >45% and <95% at screening and Day 1 (prior to randomization).
  4. Diffusing capacity of the lungs for carbon monoxide (DLCO) percent predicted and corrected by hemoglobin (Hb) value ≥25% and ≤90% at screening (determined locally).
  5. Not currently receiving treatment for IPF with an approved therapy (that is, pirfenidone or nintedanib) for any reason, including prior intolerance or lack of response to an approved IPF therapy, or choice to forego treatment with an approved IPF therapy after a full discussion with the Investigator regarding risks/benefits of such therapy.

Key Exclusion Criteria:

  1. Previous exposure to pamrevlumab.
  2. Evidence of significant obstructive lung disease.
  3. Female participants who are pregnant or nursing.
  4. Smoking within 3 months of screening and/or unwilling to avoid smoking throughout the study.
  5. Interstitial lung disease other than IPF.
  6. Sustained improvement in the severity of IPF during the 12 months prior to screening.
  7. History of other types of respiratory diseases including diseases or disorders of the airways, lung parenchyma, pleural space, mediastinum, diaphragm, or chest wall.
  8. Medical conditions (for example, myocardial infarction [MI]/stroke within the past 6 month), or logistical challenges that in the opinion of the Investigator preclude the participant's adequate participation in the study.
  9. Acute IPF exacerbation during screening or randomization.
  10. Use of any investigational drugs or unapproved therapies, or participation in any clinical trial with an investigational new drug within 30 days prior to screening. Or use of approved IPF therapies (that is, pirfenidone or nintedanib) within 1 week prior to screening.
  11. History of allergic or anaphylactic reaction to human, humanized, chimeric or murine monoclonal antibodies, or to any component of the excipient.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03955146

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Sponsors and Collaborators
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: FibroGen Identifier: NCT03955146    
Other Study ID Numbers: FGCL-3019-091
First Posted: May 17, 2019    Key Record Dates
Last Update Posted: March 19, 2024
Last Verified: March 2024
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Undecided

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by FibroGen:
Idiopathic Pulmonary Fibrosis, IPF, Idiopathic Interstitial Pneumonia, Interstitial Lung Disease, Lung Fibrosis
Additional relevant MeSH terms:
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Pulmonary Fibrosis
Idiopathic Pulmonary Fibrosis
Pathologic Processes
Lung Diseases, Interstitial
Lung Diseases
Respiratory Tract Diseases