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Completed

NCT Number: NCT04666441

COVID-19 Study Assessing the Virologic Efficacy of REGN10933+REGN10987 Across Different Dose Regimens in Adult Outpatients With SARS-CoV-2 Infection

The primary objective of the study is to assess the virologic efficacy of REGN10933+REGN10987 across different intravenous and subcutaneous doses compared to placebo.

The secondary objectives of the study are:

* To evaluate additional indicators of virologic efficacy of REGN10933+REGN10987 compared to placebo * To evaluate the safety and tolerability of REGN10933+REGN10987 compared to placebo * To assess the concentrations of REGN10933 and REGN10987 in serum over time * To assess the immunogenicity of REGN10933 and REGN10987

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

Regeneron Study Site, Mesa, Arizona, United States

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Key Inclusion Criteria:

  • Has SARS-CoV-2-positive diagnostic test from a sample collected ≤72 hours prior to randomization, as defined by the protocol
  • Low-risk symptomatic patient: Has symptoms consistent with COVID-19 (as determined by the investigator) with onset ≤7 days before randomization, and meets all of the following 8 criteria:
  • Age ≤50
  • No obesity, with obesity defined as BMI ≥30 kg/m2
  • Does not have cardiovascular disease or hypertension
  • Does not have chronic lung disease or asthma
  • Does not have type 1 or type 2 diabetes mellitus
  • Does not have chronic kidney disease, with or without dialysis
  • Does not have chronic liver disease
  • Is not pregnant or
  • Asymptomatic patient: Has had no symptoms consistent with COVID-19 (as determined by the investigator) occurring at any time <2 months prior to randomization
  • Maintains O2 saturation ≥93% on room air

Key Exclusion Criteria:

  • Was admitted to a hospital for COVID-19 prior to randomization, or is hospitalized (inpatient) for any reason at randomization
  • Has a known positive SARS-CoV-2 serologic test
  • Has a positive SARS-CoV-2 antigen or molecular diagnostic test from a sample collected >72 hours prior to randomization
  • Is immunosuppressed, based on investigator's assessment
  • Has participated, or is participating, in a clinical research study evaluating COVID-19 convalescent plasma, mAbs against SARS-CoV-2, or intravenous immunoglobulin (IVIG) within 3 months or within 5 half-lives of the investigational product (whichever is longer) prior to the screening visit
  • Prior, current, or planned future use of any of the following treatments: COVID-19 convalescent plasma, mAbs against SARS-CoV-2, (eg, bamlanivimab), IVIG (any indication), systemic corticosteroids (any indication), or COVID-19 treatments (authorized, approved, or investigational)
  • Prior use (prior to randomization), current use (at randomization), or planned use (within time period given per CDC guidance but no sooner than 22 days of study drug administration) of any authorized or approved vaccine for COVID-19
  • Has known active infection with influenza or other non-SARS-CoV-2 respiratory pathogen, confirmed by a diagnostic test
  • Has participated, is participating, or plans to participate in a clinical research study evaluating any authorized, approved, or investigational vaccine for COVID-19

NOTE: Other protocol defined inclusion/exclusion criteria apply

Treatment and study plan

REGN10933+REGN10987 combination therapy

Drug

Administered IV or SC single dose

Other names: REGN-COV2, REGEN-COV™, Ronapreve™, casirivimab, imdevimab

Placebo

Drug

Administered IV or SC single dose to match

Primary outcomes

  1. Time-Weighted Average Daily Change From Day 1 in Viral Load in NP Swab Samples

    Time frame: Day 1 to Day 7

    Time-weighted average daily change from Day 1 in viral load (log10 copies/mL), as measured by reverse transcription quantitative polymerase chain reaction (RT-qPCR) in nasopharyngeal (NP) swab samples.

Secondary outcomes

  1. Time-Weighted Average Daily Change From Day 1 in Viral Load

    Time frame: Day 1 to Day 5

    Time-weighted average daily change from Day 1 in viral load (log10 copies/mL) as measured by reverse transcription quantitative polymerase chain reaction (RT-qPCR) in nasopharyngeal (NP) swab samples.

  2. Time-Weighted Average Daily Change From Day 1 in Viral Load in Participants With High Viral Load at Baseline

    Time frame: Day 1 to Day 7

    Time-weighted average daily change from Day 1 in viral load (log10 copies/mL) as measured by reverse transcription quantitative polymerase chain reaction (RT-qPCR) in nasopharyngeal (NP) swab samples. in any participant with a viral load greater than 10,000 copies/mL at baseline.

  3. Time-Weighted Average Daily Change From Day 1 in Viral Load in Participants With High Viral Load at Baseline

    Time frame: Day 1 to Day 5

    Time-weighted average daily change from Day 1 in viral load (log10 copies/mL) as measured by reverse transcription quantitative polymerase chain reaction (RT-qPCR) in nasopharyngeal (NP) swab samples. in any participant with a viral load greater than 10,000 copies/mL at baseline.

  4. Number of Participants With High Viral Load

    Time frame: Day 1, Day 3, Day 5, Day 7, Day 15, Day 22

    Number of participants with viral load greater than 10,000 copies/mL, as measured by reverse transcription quantitative polymerase chain reaction (RT-qPCR) in nasopharyngeal (NP) swab samples.

  5. Number of Participants With Viral Loads Below the Limit of Detection

    Time frame: Day 1, Day 3, Day 5, Day 7, Day 15, Day 22

    Number of participants with viral load less than 299 copies/mL, as measured by reverse transcription quantitative polymerase chain reaction (RT-qPCR) in nasopharyngeal (NP) swab samples.

  6. Number of Participants With Viral Loads Below the Lower Limit of Quantification

    Time frame: Day 1, Day 3, Day 5, Day 7, Day 15, Day 22

    Number of participants with viral load less than 714 copies/mL, as measured by reverse transcription quantitative polymerase chain reaction (RT-qPCR) in nasopharyngeal (NP) swab samples.

  7. Change From Day 1 in Viral Load as Measured by RT-qPCR in NP Swab Samples

    Time frame: Day 3, Day 5, Day 7, Day 15, Day 22

    Change from Day 1 in Viral Load (log10 copies/mL) as Measured by Quantitative reverse transcription polymerase chain reaction (RT-qPCR) in nasopharyngeal (NP) Swab Samples

  8. Number of Participants With Treatment-Emergent Serious Adverse Events (SAEs)

    Time frame: Through day 29

  9. Number of Participants With Infusion-Related Reactions Grade 2 or Above

    Time frame: Through day 4

  10. Number of Participants With Injection-Site Reactions Grade 3 or Above

    Time frame: Through day 4

  11. Number of Participants With Hypersensitivity Reactions Grade 2 or Above

    Time frame: Through day 29

  12. Concentration of REGN10933 in Serum

    Time frame: Pre-Dose, 15 minutes Post-Dose, 3 days Post-Dose, 5 days Post-Dose, 7 days Post-Dose, 120 days Post-Dose

  13. Immunogenicity as Measured by Anti-drug Antibodies (ADAs) to REGN10933

    Time frame: Through day 120

  14. Immunogenicity as Measured by Neutralizing Anti-drug Antibody (NAb) to REGN10933

    Time frame: Through day 120

  15. Concentration of REGN10987 in Serum

    Time frame: Pre-Dose, 15 minutes Post-Dose, 3 days Post-Dose, 5 days Post-Dose, 7 days Post-Dose, 120 days Post-Dose

  16. Immunogenicity as Measured by Anti-drug Antibodies (ADAs) to REGN10987

    Time frame: Through day 120

  17. Immunogenicity as Measured by Neutralizing Anti-drug Antibody (NAb) to REGN10987

    Time frame: Through day 120

Sponsors and collaborators

Lead sponsor

Regeneron Pharmaceuticals

Industry

Registry information

Official study title

A Phase 2 Study to Assess the Virologic Efficacy of REGN10933+REGN10987 Across Different Dose Regimens in Outpatients With SARS-CoV-2 Infection

Important dates

Study start
2020
Primary completion
2021
Study completion
2021
First posted
Dec 14, 2020
Registry last updated
Apr 8, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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