An anti-Spike (SARS-CoV-2) antibody.

Phase of research

Emergency use authorization

How it helps


Drug status


Supporting references
Contradictory references
Clinical trials

General information

Imdevimab is a fully human monoclonal antibody targeting and neutralizing SARS-CoV-2 Spike protein (Hansen et al., 2020).

On November 21, 2020, FDA issued an emergency use authorization for casirivimab and imdevimab to be administered together for the treatment of mild to moderate COVID-19 in adults and pediatric patients (12 years of age or older weighing at least 40 kilograms [about 88 pounds]) with positive results of direct SARS-CoV-2 viral testing and who are at high risk for progressing to severe COVID-19. This includes those who are 65 years of age or older or who have certain chronic medical conditions.



Supporting references

Link Tested on Impact factor Notes Publication date DB entry date
The Impact on Infectivity and Neutralization Efficiency of SARS-CoV-2 Lineage B.1.351 Pseudovirus
Spike protein Spike variant In vitro Antibody In silico
in silico; 293T-ACE2 cells; SARS-CoV-2 Spike-psudotype virus variants. 3.82

The antibody efficiently blocked SARS-CoV-2 Spike B.1.351 variant-pseudotyped infection in vitro.

Apr/07/2021 Aug/14/2021
SARS-CoV-2 variants B.1.351 and P.1 escape from neutralizing antibodies
Antibody In vitro Mixed substance Peptide RNA Small molecule Spike protein
Caco-2 cells; Vero cells; Sera of vaccinated individuals; (VSV) SARS-CoV-2 Spike-pseudotyped virus (WT, B.1.1.7, B.1.351, ant P.1 variants) 38.64

Imdevimab displayed in vitro inhibition of SARS-CoV-2 Spike-pseudotyped virus infection for all tested emergent Spike variants (B.1.1.7, B.1.351, and P.1).

Mar/20/2021 Apr/05/2021
Antibody cocktail to SARS-CoV-2 spike protein prevents rapid mutational escape seen with individual antibodies
Vero E6 cells 41.85 2019

REGN10987+REGN10933 antibody cocktail

Nov/23/2020 Nov/23/2020

Clinical trials

ID Title Status Phase Start date Completion date
NCT05092581 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 Not yet recruiting Phase 1 Dec/20/2021 Jun/09/2023
NCT05081388 COVID-19 Study to Evaluate Safety, Tolerability, and Efficacy of REGN14256+Imdevimab for the Treatment of COVID-19 Adult and Adolescent Patients Without Risk Factors for Progression to Severe Disease Recruiting Phase 1|Phase 2 Nov/08/2021 Nov/10/2022
NCT05074433 A Study to Evaluate Efficacy and Safety of Casirivimab+Imdevimab (Monoclonal Antibodies) for Prevention of COVID-19 in Immunocompromised Adolescents and Adults Recruiting Phase 3 Oct/25/2021 Jun/26/2023
NCT04992273 COVID-19 Administration of Single-Dose Subcutaneous or Intramuscular Anti- Spike(s) SARS-CoV-2 Monoclonal Antibodies Casirivimab and Imdevimab in High-Risk Pediatric Participants Under 12 Years of Age Recruiting Phase 2 Sep/13/2021 Nov/03/2022
NCT04852978 COVID-19 Study to Assess Immunogenicity, Safety, and Tolerability of Moderna mRNA-1273 Vaccine Administered With Casirivimab+Imdevimab in Healthy Adult Volunteers Recruiting Phase 2 Apr/29/2021 Nov/22/2022
NCT04790786 UPMC OPTIMISE-C19 Trial, a COVID-19 Study Recruiting Phase 3 Mar/10/2021 Dec/01/2022
NCT04666441 COVID-19 Study Assessing the Virologic Efficacy of REGN10933+REGN10987 Across Different Dose Regimens in Adult Outpatients With SARS-CoV-2 Infection Completed Phase 2 Dec/15/2020 Sep/21/2021
NCT04840459 Use of Monoclonal Antibodies for the Treatment of Mild to Moderate COVID-19 in Non-Hospitalized Setting Recruiting Phase 2 Nov/20/2020 Jan/31/2022
NCT04518410 ACTIV-2: A Study for Outpatients With COVID-19 Recruiting Phase 2|Phase 3 Aug/19/2020 Dec/31/2023
NCT04519437 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 Active, not recruiting Phase 1 Jul/26/2020 Oct/25/2021
NCT04452318 COVID-19 Study Assessing the Efficacy and Safety of Anti-Spike SARS CoV-2 Monoclonal Antibodies for Prevention of SARS CoV-2 Infection Asymptomatic in Healthy Adults and Adolescents Who Are Household Contacts to an Individual With a Positive SARS-CoV-2 RT-PCR Assay Completed Phase 3 Jul/13/2020 Oct/04/2021
NCT04425629 Safety, Tolerability, and Efficacy of Anti-Spike (S) SARS-CoV-2 Monoclonal Antibodies for the Treatment of Ambulatory Adult and Pediatric Patients With COVID-19 Recruiting Phase 3 Jun/16/2020 May/18/2022
NCT04426695 Safety, Tolerability, and Efficacy of Anti-Spike (S) SARS-CoV-2 Monoclonal Antibodies for Hospitalized Adult Patients With COVID-19 Completed Phase 1|Phase 2 Jun/11/2020 Oct/22/2021
NCT04617535 Compassionate Use of REGN-COV2 for the Treatment of COVID-19 Available Jan/01/1970 Jan/01/1970