Ravulizumab in Adult Participants With Paroxysmal Nocturnal Hemoglobinuria Currently Treated With High-Dose Eculizumab

August 12, 2024 updated by: Alexion Pharmaceuticals, Inc.

Phase 4, Single-Arm Study of Ravulizumab in Adult Participants With Paroxysmal Nocturnal Hemoglobinuria Currently Treated With High-Dose Eculizumab

The primary purpose of this study is to assess the safety, efficacy, pharmacokinetics, and pharmacodynamics of ravulizumab in participants who are prescribed and are receiving a higher than approved dose of eculizumab to treat paroxysmal nocturnal hemoglobinuria (PNH).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
18

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United Kingdom
      • Leeds, United Kingdom, LS9 7TF
        • Research Site
      • Leeds, United Kingdom, LS9 7TF
        • Clinical Study Site
      • London, United Kingdom, SE5 9RS
        • Research Site
      • London, United Kingdom, SE5 9RS
        • Clinical Study Site

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Key Inclusion Criteria:

  1. Documented diagnosis of PNH, confirmed by high-sensitivity flow cytometry evaluation of red blood cells and white blood cells, with granulocyte or monocyte clone size of ≥ 5%.
  2. Received 1200 mg eculizumab every 12 to 16 days (every 2 weeks) for at least 3 months prior to Screening.
  3. LDH ≤ 2 x upper limit of normal (ULN) according to central laboratory, at Screening.
  4. To reduce the risk of meningococcal infection (Neisseria meningitidis), all participants must be vaccinated against meningococcal infections within 3 years prior to initiating study drug.
  5. Body weight ≥ 40 kilograms.

Key Exclusion Criteria:

  1. History of major adverse vascular events within 6 months of Day 1.
  2. History of bone marrow transplantation.
  3. Lymphoma, leukemia, myelodysplastic syndrome, or any malignancy within the past 5 years except for basal cell or squamous epithelial carcinomas of the skin that have been resected with no evidence of metastatic disease for 3 years.
  4. Concomitant use of anticoagulants is prohibited if not on a stable regimen for at least 2 weeks prior to Day 1.

  5. Concomitant use of any of the following medications and not on a stable regimen (as judged by the Investigator) for the time period indicated prior to Screening:

    • Erythropoietin or immunosuppressants for at least 8 weeks
    • Systemic corticosteroids for at least 4 weeks
    • Vitamin K antagonists (for example, warfarin) with a stable international normalized ratio level for at least 4 weeks
    • Iron supplements or folic acid for 4 weeks
  6. Live vaccine(s) within 1 month prior to Screening or plans to receive such vaccines during the study.
  7. More than 1 LDH value > 2 × ULN within the 6 months prior to Day 1.
  8. Platelet count < 30,000/cubic millimeter (30 × 10^9/Liter [L]) at Screening.
  9. Absolute neutrophil count < 500/microliter (0.5 × 10^9/L) at Screening.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Ravulizumab
Participants will receive eculizumab during the 3-month Screening Period. Participants will then switch over to and receive weight-based doses of ravulizumab for the duration of the study Treatment Period (351 days).
Biological: Eculizumab
Participants must have been prescribed and be receiving a stable dose of eculizumab 1200 milligrams (mg) every 2 weeks (q2w) for at least 3 months prior to the Screening Period. During the Screening Period, participants will continue to receive eculizumab 1200 mg q2w.
Other Names:
  • Soliris
Biological: Ravulizumab
During the Treatment Period, participants will receive a loading dose of ravulizumab on Day 1, followed by maintenance doses on Day 15 and every 8 weeks, administered by intravenous infusion. Ravulizumab loading and maintenance doses will be based on participants' body weight per approved dose regimen.
Other Names:
  • Ultomiris
  • ALXN1210

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Percentage of Participants Who Experienced Free C5-associated BTH
Time Frame: Baseline through Day 351
Free C5-associated BTH was defined as BTH concurrent with free C5 concentrations ≥0.5 micrograms (μg)/milliliter (mL). BTH was defined as at least one new or worsening symptom or sign of intravascular hemolysis (fatigue, hemoglobinuria, abdominal pain, shortness of breath [dyspnea], anemia [hemoglobin <10 grams {g}/deciliter {dL}], major adverse vascular event [MAVE], including thrombosis, dysphagia, or erectile dysfunction) in the presence of elevated lactate dehydrogenase (LDH) ≥2 * upper limit of normal (ULN).
Baseline through Day 351

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Percentage of Participants Who Experienced BTH
Time Frame: Baseline through Day 351
BTH was defined as at least one new or worsening symptom or sign of intravascular hemolysis (fatigue, hemoglobinuria, abdominal pain, shortness of breath [dyspnea], anemia [hemoglobin <10 g/dL], MAVE, including thrombosis, dysphagia, or erectile dysfunction) in the presence of elevated LDH ≥2 * ULN.
Baseline through Day 351
Percent Change From Baseline in LDH at Day 351
Time Frame: Baseline, Day 351
Baseline, Day 351
Percentage of Participants Who Received a Red Blood Cell (RBC) Transfusion
Time Frame: Baseline through Day 351
Baseline through Day 351
Percentage of Participants With Stabilized Hemoglobin
Time Frame: Baseline through Day 351
Stabilized hemoglobin was defined as avoidance of a ≥2 g/dL decrease in hemoglobin level from baseline in the absence of transfusion from Baseline to Day 351.
Baseline through Day 351

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Alexion Pharmaceuticals, Inc.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 14, 2021

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 20, 2022

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 20, 2022

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 23, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 23, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 25, 2020

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 5, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 12, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • ALXN1210-PNH-401
  • 2019-003440-74 (EudraCT Number)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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