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COVID-19 Study of Pharmacokinetics, Safety, Tolerability, and Efficacy of Intravenous Anti-Spike(s) SARS-CoV-2 Monoclonal Antibodies (Casirivimab+Imdevimab) for the Treatment of Pediatric Patients Hospitalized Due to COVID-19

A Phase 1b, Open-Label, Single Dose Study Assessing the Pharmacokinetics, Safety, Tolerability, and Efficacy of Intravenous Anti-Spike(s) SARS-CoV-2 Monoclonal Antibodies (Casirivimab+Imdevimab) for the Treatment of Pediatric Patients Hospitalized Due to COVID-19

Status
Terminated
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05092581
Enrollment
2
Registered
2021-10-25
Start date
2021-12-16
Completion date
2022-06-09
Last updated
2025-10-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

COVID-19

Keywords

Coronavirus disease 2019 (COVID-19), Severe acute respiratory syndrome coronavirus 2 (SARS-COV-2), coronavirus

Brief summary

The primary objectives of the study are: * To characterize the concentrations of casirivimab+imdevimab in serum over time * To evaluate the safety and tolerability of casirivimab+imdevimab The secondary objective of the study is: • To assess the immunogenicity of casirivimab+imdevimab

Interventions

Single dose weight-based equivalent administered intravenously (IV)

Sponsors

Regeneron Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
1 Minutes to 17 Years
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: 1. Has SARS-CoV-2 positive antigen or molecular diagnostic test ≤72 hours prior to study enrollment Note: historical record of positive result is acceptable as long as the sample was collected ≤72 hours prior to enrollment 2. Has symptoms consistent with COVID-19, as determined by the investigator, with onset ≤ 14 days before dosing 3. Hospitalized due to COVID-19 4. Provide informed consent signed by study patient or legally acceptable representative/guardian Key

Exclusion criteria

1. In the opinion of the investigator, unlikely to survive for \>96 hours from screening 2. Neonates having gestational age of \<29 weeks and weight \<1.1 kg 3. Receiving extracorporeal membrane oxygenation (ECMO) 4. Has new-onset stroke or seizure disorder during hospitalization 5. Initiated on renal replacement therapy due to COVID-19 6. Has circulatory shock requiring vasopressors on dosing day Note: Patients who require vasopressors for sedation-related hypotension or reasons other than circulatory shock may be eligible in this study 7. Participation in a clinical research study, including any double-blind study, evaluating an investigational product within 30 days and less than 5 half-lives of the investigational product prior to the screening visit 8. Members of the clinical site study team and/or their immediate family 9. Plans to receive an investigational or approved SARS-CoV-2 vaccine within 90 days after study drug administration based on current Centers for Disease Control vaccination guidelines (CDC, 2021). Refer to the latest CDC guidance for any updates. Note: Patients who have already completed vaccination prior to study enrollment may be allowed in the study. 10. Prior use (within 90 days prior to study drug administration) or current use of any investigational, authorized, or approved passive antibody for prophylaxis of SARS-CoV-2 infection, including convalescent plasma, convalescent sera, hyperimmune globulin, or other monoclonal antibodies (eg, bamlanivimab and etesevimab, sotrovimab) Note: Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frame
Concentrations of casirivimab+imdevimab in serum over timeThrough day 169
Proportion of patients with treatment-emergent serious adverse events (SAEs)Through day 29
Proportion of patients with infusion-related reactionsThrough day 4
Proportion of patients with hypersensitivity reactionsThrough day 29

Secondary

MeasureTime frame
Incidence of anti-drug antibodies (ADA) to casirivimab+imdevimab over timeThrough day 169
Incidence of neutralizing antibodies (NAb) to casirivimab+imdevimab over timeThrough day 169

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026