Efficacy and Safety Study of IV Ravulizumab in Patients With COVID-19 Severe Pneumonia
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ClinicalTrials.gov Identifier: NCT04369469 |
Recruitment Status :
Terminated
(Met futility bar at interim analysis)
First Posted : April 30, 2020
Results First Posted : May 24, 2022
Last Update Posted : May 24, 2022
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
COVID-19 Severe Pneumonia Acute Lung Injury Acute Respiratory Distress Syndrome Pneumonia, Viral | Biological: Ravulizumab Other: BSC | Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 202 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Phase 3 Open-label, Randomized, Controlled Study to Evaluate the Efficacy and Safety of Intravenously Administered Ravulizumab Compared With Best Supportive Care in Patients With COVID-19 Severe Pneumonia, Acute Lung Injury, or Acute Respiratory Distress Syndrome |
Actual Study Start Date : | May 10, 2020 |
Actual Primary Completion Date : | February 8, 2021 |
Actual Study Completion Date : | April 8, 2021 |

Arm | Intervention/treatment |
---|---|
Experimental: Group 1 - Ravulizumab + BSC |
Biological: Ravulizumab
Weight-based doses of ravulizumab were administered intravenously on Days 1, 5, 10, and 15.
Other Names:
Other: BSC Participants received medications, therapies, and interventions per standard hospital treatment protocols. |
Group 2 - BSC alone |
Other: BSC
Participants received medications, therapies, and interventions per standard hospital treatment protocols. |
- Survival (Based On All-Cause Mortality) in Participants in the ITT Population At Day 29 [ Time Frame: Day 29 ]Survival (based on all-cause mortality) in Participants in the ITT Population at Day 29 was analyzed. The result for the survival was estimated survival combined over all imputations.
- Number Of Days Free Of Mechanical Ventilation At Day 29 [ Time Frame: Day 29 ]The number of days free of mechanical ventilation was defined as the total number of days from Day 1 to Day 29 without invasive or non-invasive mechanical ventilation.
- Number of Days the Participants Were Alive and Not in ICU [ Time Frame: Day 1 through Day 29 ]The number of days that the participants were alive and not in the ICU from Day 1 through Day 29 are presented.
- Change From Baseline In Sequential Organ Failure Assessment (SOFA) At Day 29 [ Time Frame: Baseline, Day 29 ]Baseline was defined as the last available assessment on or before Day 1 for all participants. Participants were evaluated using the SOFA score, an assessment tool that included a review of 6 organ systems: respiratory, renal, hepatic, cardiac, coagulation, and central nervous system. Each organ system was scored from 0 to 4 points using the worst value observed within the previous 24 hours. The total score ranged from 0 to 24, with a higher score indicating a worse condition.
- Change From Baseline In Peripheral Capillary Oxygen Saturation/Fraction Of Inspired Oxygen (SpO2/FiO2) At Day 29 [ Time Frame: Baseline, Day 29 ]Oxygenation was measured using the SpO2 and the amount of supplemental oxygen as measured by the FiO2 received by taking the ratio of these 2 measures at the same time point.
- Number of Days the Participants Were Alive and Not in the Hospital [ Time Frame: Day 1 through Day 29 ]The number of days that the participants were alive and not in the hospital from Day 1 through Day 29 are presented.
- Estimated Number of Participants Alive At Up To Day 60 and At Up To Day 90 [ Time Frame: Up to Day 60 and Up to Day 90 ]For this analysis, 2 participants in Group 1 (Ravulizumab + BSC) and 1 participant in Group 2 (BSC Alone) were censored at Day 90. The estimated number of participants alive for this analysis was calculated using the method of Kaplan and Meier (KM) and compared using a log-rank test stratified by intubated or not intubated on Day 1 as a sensitivity analysis. This Outcome Measure was designed to project an estimate of how many participants would be alive and not the actual number of alive participants. All-Cause Mortality data is provided in the Adverse Events Section.
- Serum Ravulizumab Concentrations Prior to Dosing on Day 1 and Day 29 [ Time Frame: Day 1 and Day 29 ]Results are reported in micrograms/milliliter (μg/mL).
- Change From Baseline In Serum Free Complement Component 5 Concentrations At Day 29 [ Time Frame: Baseline, Day 29 ]
- Change From Baseline In Terminal Complement Complex C5b-9 At Day 29 [ Time Frame: Baseline, Day 29 ]

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.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Males or female participants ≥ 18 years of age and ≥ 40 kilograms at the time of providing informed consent.
- Confirmed diagnosis of severe acute respiratory syndrome coronavirus 2 infection (for example, via polymerase chain reaction and/or antibody test) presenting as severe COVID-19 requiring hospitalization.
- Severe pneumonia, acute lung injury, or acute respiratory distress syndrome confirmed by computed tomography or X-ray at Screening or within the 3 days prior to Screening, as part of the participant's routine clinical care.
- Respiratory distress requiring mechanical ventilation, which can be either invasive (requiring endotracheal intubation) or noninvasive (with continuous positive airway pressure or bilevel positive airway pressure).
- Female participants of childbearing potential and male participants with female partners of childbearing potential must follow protocol specified contraception guidance for avoiding pregnancy for 8 months after treatment with the study drug.
Exclusion Criteria:
- Participant was not expected to survive for more than 24 hours.
- Participant was on invasive mechanical ventilation with intubation for more than 48 hours prior to Screening.
- Severe pre-existing cardiac disease (that is, New York Heart Association Class 3 or Class 4, acute coronary syndrome or persistent ventricular tachyarrhythmias).
- Participant had an unresolved Neisseria meningitidis infection.
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Used the following medications and therapies:
- Current treatment with a complement inhibitor or
- Intravenous immunoglobulin within 4 weeks prior to randomization on Day 1
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Treatment with investigational therapy in a clinical study within 30 days before randomization, or within 5 half-lives of that investigational therapy, whichever was greater. Exceptions:
- Investigational therapies were allowed if received as part of BSC through an expanded access protocol or emergency approval for the treatment of COVID-19.
- Investigational antiviral therapies (such as remdesivir) were allowed even if received as part of a clinical study.
- Female participants who were breastfeeding or who have a positive pregnancy test result at Screening.
- History of hypersensitivity to any ingredient contained in the study drug, including hypersensitivity to murine proteins.
- Participant who was not currently vaccinated against Neisseria meningitidis, unless the participant agrees to receive prophylactic treatment with appropriate antibiotics for at least 8 months after the last infusion of study drug or until at least 2 weeks after the participant receives vaccination against Neisseria meningitidis.

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 ClinicalTrials.gov identifier (NCT number): NCT04369469

Documents provided by Alexion:
Other Publications:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | Alexion |
ClinicalTrials.gov Identifier: | NCT04369469 |
Other Study ID Numbers: |
ALXN1210-COV-305 |
First Posted: | April 30, 2020 Key Record Dates |
Results First Posted: | May 24, 2022 |
Last Update Posted: | May 24, 2022 |
Last Verified: | May 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | Alexion has a public commitment to allow requests for access to study data and will be supplying a protocol, CSR, and plain language summaries. |
Supporting Materials: |
Study Protocol Clinical Study Report (CSR) |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
acute lung injury acute respiratory distress syndrome antibodies, monoclonal, humanized COVID-19 hospitalization pneumonia severe pneumonia |
severe acute respiratory syndrome severe acute respiratory syndrome coronavirus 2 randomized controlled study ravulizumab respiratory distress syndrome, adult Ultomiris viral |
COVID-19 Pneumonia Pneumonia, Viral Respiratory Distress Syndrome Respiratory Distress Syndrome, Newborn Acute Lung Injury Lung Injury Syndrome Disease Pathologic Processes Respiratory Tract Infections Infections Virus Diseases Coronavirus Infections Coronaviridae Infections |
Nidovirales Infections RNA Virus Infections Lung Diseases Respiratory Tract Diseases Wounds and Injuries Respiration Disorders Infant, Premature, Diseases Infant, Newborn, Diseases Thoracic Injuries Ravulizumab Complement Inactivating Agents Immunosuppressive Agents Immunologic Factors Physiological Effects of Drugs |