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REGN10933+REGN10987 combination therapy

Phase 2

COVID-19 | Small molecule | Infectious Disease |Regeneron Pharmaceuticals, Inc.|Last Updated: Jan 27, 2023

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindCONTROLLEDDMC
Total Trials2
Total Enrollment3,401
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04666441COVID-19 Study Assessing the Virologic Efficacy of REGN10933+REGN10987 Across Different Dose Regimens in Adult Outpatients With SARS-CoV-2 InfectionPHASE2 COMPLETED 1,149Dec 15, 2020Sep 21, 2021Apr 8, 202257 United States
NCT04426695Safety, Tolerability, and Efficacy of Anti-Spike (S) SARS-CoV-2 Monoclonal Antibodies for Hospitalized Adult Patients With COVID-19PHASE1 COMPLETED 2,252Jun 10, 2020Oct 22, 2021Jan 27, 2023123 United States, Brazil +4
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Study Endpoints
Primary Endpoints
Time-Weighted Average Daily Change From Day 1 in Viral Load in NP Swab Samples
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.

Pooled Analysis (Phase 3 [Cohort 1] and Phase 2 [Cohort 1A]): Time-weighted Average (TWA) Change in Viral Load in Nasopharyngeal (NP) Samples Based on Seronegative mFAS
Day 1 to Day 7

Time-weighted average daily change from Day 1 to Day 7 in viral load (log10 copies/mL), as measured by reverse transcription quantitative polymerase chain reaction (RT-qPCR) in nasopharyngeal (NP) swab samples.

Pooled Analysis (Phase 3 [Cohort 1] and Phase 2 [Cohort 1A]): Percentage of Participants Who Died or Went on Mechanical Ventilation From Day 6 Through Day 29 Based on High Viral Load mFAS
Day 6 to Day 29

Percentage of participants who died or went on mechanical ventilation from Day 6 through Day 29 based on high viral load mFAS were reported.

Pooled Analysis (Phase 3 [Cohort 1] and Phase 2 [Cohort 1A]): Percentage of Participants Who Died or Went on Mechanical Ventilation From Day 6 Through Day 29 Based on Seronegative mFAS
Day 6 to Day 29

Percentage of participants who died or went on mechanical ventilation from Day 6 through Day 29 based on seronegative mFAS were reported.

Pooled Analysis (Phase 3 [Cohort 1] and Phase 2 [Cohort 1A]): Percentage of Participants Who Died or Went on Mechanical Ventilation From Day 6 Through Day 29 Based on Overall mFAS
Day 6 to Day 29

Percentage of participants who died or went on mechanical ventilation from Day 6 through Day 29 based on overall FAS were reported.

Pooled Analysis (Phase 3 [Cohort 1] and Phase 2 [Cohort 1A]): Percentage of Participants Who Died or Went on Mechanical Ventilation From Day 1 Through Day 29 Based on High Viral Load mFAS
Day 1 to Day 29

Percentage of participants who died or went on mechanical ventilation from Day 1 through Day 29 based on high viral load mFAS were reported.

Pooled Analysis (Phase 3 [Cohort 1] and Phase 2 [Cohort 1A]): Percentage of Participants Who Died or Went on Mechanical Ventilation From Day 1 Through Day 29 Based on Seronegative mFAS
Day 1 to Day 29

Percentage of participants who died or went on mechanical ventilation from Day 1 through Day 29 based on seronegative mFAS were reported.

Pooled Analysis (Phase 3 [Cohort 1] and Phase 2 [Cohort 1A]): Percentage of Participants Who Died or Went on Mechanical Ventilation From Day 1 Through Day 29 Based on Overall mFAS
Day 1 to Day 29

Percentage of participants who died or went on mechanical ventilation from Day 1 through Day 29 based on overall mFAS were reported.

Pooled Analysis (Phase 1 [Cohort 1] and Phase 2 [Cohort 1]): Number of Participants With Treatment-Emergent Serious Adverse Events
Up to Day 169

Treatment-emergent adverse events are defined as those that are not present at baseline or represent the exacerbation of a pre-existing condition during the observation period.

Pooled Analysis (Phase 1 [Cohort 1] and Phase 2 [Cohort 1]): Number of Participants With Grade >=2 Infusion Related Reactions up to Day 4
Up to Day 4

Infusion-related reactions are defined as any relevant adverse event that occurs during the infusion or up to day 4. The severity of adverse events (including test findings classified as adverse events) were graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE).

Pooled Analysis (Phase 1 [Cohort 1] and Phase 2 [Cohort 1]): Number of Participants With Grade >=2 Hypersensitivity Reactions Up to Day 29
Up to Day 29

Hypersensitivity reactions are defined as any relevant adverse event that occurs during the infusion or up to study day 29. The severity of adverse events (including test findings classified as adverse events) were graded according to NCI-CTCAE.

Pooled Analysis (Phase 1 [Cohort 1] and Phase 2 [Cohort 1]): Cumulative Incidence of Death or Mechanical Ventilation Based on Seronegative mFAS
Up to Day 29

Cumulative incidence percentage was estimated using Kaplan-Meier method.

Pooled Analysis (Phase 1 [Cohort 1] and Phase 2 [Cohort 1]): Cumulative Incidence of Death or Mechanical Ventilation Based on High Viral Load mFAS
Up to Day 29

Cumulative incidence percentage was estimated using Kaplan-Meier method.

Secondary Endpoints
Time-Weighted Average Daily Change From Day 1 in Viral Load
Day 1 to Day 5
Time-Weighted Average Daily Change From Day 1 in Viral Load in Participants With High Viral Load at Baseline
Day 1 to Day 7
Number of Participants With High Viral Load
Day 1, Day 3, Day 5, Day 7, Day 15, Day 22
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
IV Dose 1EXPERIMENTALCombination therapy intravenous (IV) single dose
IV Dose 2EXPERIMENTALCombination therapy IV single dose
IV Dose 3EXPERIMENTALCombination therapy IV single dose
IV Dose 4EXPERIMENTALCombination therapy IV single dose
Placebo IV DoseEXPERIMENTALMatching placebo IV single dose
SC Dose 1EXPERIMENTALCombination therapy subcutaneous (SC) single dose
SC Dose 2EXPERIMENTALCombination therapy SC single dose
Placebo SC DoseEXPERIMENTALMatching placebo SC single dose
On Low-Flow OxygenEXPERIMENTALCohort 1 (C1): O2 saturation \>93% on low-flow oxygen via nasal cannula, simple face mask, or other similar device
With COVID-19 symptoms but not requiring supplemental O2EXPERIMENTALCohort 1A (C1A): With COVID-19 symptoms but not requiring supplemental oxygen
High O2 No Mechanical VentilationEXPERIMENTALCohort 2 (C2): On high-intensity oxygen (O2) therapy but not on mechanical ventilation
On Mechanical VentilationEXPERIMENTALCohort 3 (C3): On mechanical ventilation
Interventions
NameTypeDescription
REGN10933+REGN10987 combination therapyDRUGAdministered IV or SC single dose
PlaceboDRUGAdministered IV or SC single dose to match
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites57

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, a...

Countries:United StatesBrazilChileMexicoMoldovaRomania
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