Skip to content

Study Assessing the Safety, Tolerability, Pharmacokinetics, and Immunogenicity of Repeated Subcutaneous Doses of Anti-Spike (S) SARS-CoV-2 Monoclonal Antibodies (REGN10933+REGN10987) in Adult Volunteers as Related to COVID-19

A Phase 1, Randomized, Double-Blind, Placebo-Controlled Study Assessing the Safety, Tolerability, Pharmacokinetics, and Immunogenicity of Repeated Subcutaneous Doses of Anti-Spike (S) SARS-CoV-2 Monoclonal Antibodies (REGN10933+REGN10987) in Adult Volunteers

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04519437
Enrollment
974
Registered
2020-08-19
Start date
2020-07-26
Completion date
2021-11-22
Last updated
2022-01-26

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

Conditions

Chronic Stable Illness, Healthy

Keywords

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

Brief summary

The primary objectives are: * To assess the occurrence of adverse events of special interest (AESIs) in participants treated with repeated subcutaneous (SC) doses of REGN10933+REGN10987 compared to placebo * To assess the concentrations of REGN10933 and REGN10987 in serum over time after single and repeated SC administration The secondary objectives are: * To assess the safety and tolerability of repeated SC doses of REGN10933+REGN10987 compared to placebo * To assess attainment of target concentrations of REGN10933 and REGN10987 in serum after single and repeated SC administration * To assess the immunogenicity of REGN10933 and REGN10987

Interventions

DRUGREGN10933+REGN10987

Administered subcutaneous (SC) every 4 weeks (Q4W)

DRUGPlacebo

Administered subcutaneous (SC) every 4 weeks (Q4W)

Sponsors

Regeneron Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 90 Years
Healthy volunteers
Yes

Inclusion criteria

Key Inclusion Criteria: 1. Is healthy or has chronic medical condition(s) that is stable and well controlled as per the opinion of the investigator and is not likely to require medical intervention through the end of study 2. Stable medication for co-morbid condition(s) for at least 6 months prior to screening 3. Willing and able to comply with study visits and study-related procedures, including compliance with site precautionary requirements related to SARS-CoV-2 infection and transmission Key

Exclusion criteria

1. Positive diagnostic test for SARS-CoV-2 infection ≤72 hours prior to randomization 2. Subject-reported clinical history of COVID-19 as determined by investigator 3. Subject-reported history of prior positive diagnostic test for SARS-CoV-2 infection 4. Active respiratory or non-respiratory symptoms suggestive or consistent with COVID-19 5. Medically attended acute illness, systemic antibiotics use, or hospitalization (ie, \>24 hours) for any reason within 30 days prior to screening 6. Acute exacerbation of a chronic pulmonary condition (eg, chronic obstructive pulmonary disease \[COPD\], asthma exacerbations) in the past 6 months prior to screening 7. Received investigational or approved SARS-CoV-2 vaccine 8. Received investigational or approved passive antibodies for SARS-CoV-2 infection prophylaxis as defined in the protocol 9. Use of remdesivir, intravenous immunoglobulin (IVIG), or other anti-SARS viral agents within 2 months prior to screening NOTE: Other protocol-defined Inclusion/

Design outcomes

Primary

MeasureTime frame
Incidence of adverse event of special interests (AESIs) that occur within 4 days of study drug administrationWithin 4 days postdose at Baseline
Concentrations of REGN10933 in serum over timeUp to 52 weeks
Concentrations of REGN10987 in serum over timeUp to 52 weeks

Secondary

MeasureTime frame
Proportion of participants who achieve or exceed target concentration in serum of REGN10987Up to 52 weeks
Proportion of participants with treatment-emergent adverse events (TEAEs)Up to 52 weeks
Immunogenicity as measured by anti-drug antibodies (ADA) to REGN10987Up to 52 weeks
Immunogenicity as measured by anti-drug antibodies (ADA) to REGN10933Up to 52 weeks
Severity of TEAEsUp to 52 weeks
Proportion of participants who achieve or exceed target concentration in serum of REGN10933Up to 52 weeks

Countries

United States

Outcome results

None listed

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