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Completed Phase 1Phase 2 Interventional Results available

Safety, Tolerability, and Efficacy of Anti-Spike (S) SARS-CoV-2 Monoclonal Antibodies for Hospitalized Adult Patients With COVID-19

ClinicalTrials.gov ID: NCT04426695

Public ClinicalTrials.gov record NCT04426695. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Jul 22, 2026, 2:30 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Master Protocol Assessing the Safety, Tolerability, and Efficacy of Anti-Spike (S) SARS-CoV-2 Monoclonal Antibodies for the Treatment of Hospitalized Patients With COVID-19

Study identification

NCT ID
NCT04426695
Recruitment status
Completed
Study type
Interventional
Phase
Phase 1, Phase 2
Lead sponsor
Regeneron Pharmaceuticals
Industry
Enrollment
2,252 participants

Conditions and interventions

Conditions

Interventions

  • REGN10933+REGN10987 combination therapy Drug
  • Placebo Drug

Drug

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Jun 9, 2020
Primary completion
May 6, 2021
Completion
Oct 21, 2021
Last update posted
Jan 26, 2023

2020 – 2021

United States locations

U.S. sites
96
U.S. states
32
U.S. cities
73
Facility City State ZIP Site status
Regeneron Study Site Birmingham Alabama 35249
Regeneron Study Site Chandler Arizona 85224
Regeneron Study Site Phoenix Arizona 85006
Regeneron Study Site 1 Tucson Arizona 85724
Regeneron Study Site Long Beach California 90806
Regeneron Study Site Mission Hills California 91345
Regeneron Study Site Sacramento California 95817
Regeneron Study Site Santa Monica California 90404
Regeneron Study Site Stanford California 94305
Regeneron Study Site Aurora Colorado 80045
Regeneron Study Site Boca Raton Florida 33486
Regeneron Study Site Ft. Pierce Florida 34982
Regeneron Study Site Gainesville Florida 32610
Regeneron Study Site Orlando Florida 32803
Regeneron Study Site Pensacola Florida 32504
Regeneron Study Site Sarasota Florida 34239
Regeneron Study Site Tampa Florida 33612
Regeneron Study Site Atlanta Georgia 30309
Regeneron Study Site Atlanta Georgia 30322
Regeneron Study Site Augusta Georgia 30912
Regeneron Study Site Marietta Georgia 30060
Regeneron Study Site Chicago Illinois 60611
Regeneron Study Site Chicago Illinois 60612
Regeneron Study Site Glenview Illinois 60026
Regeneron Study Site Urbana Illinois 61801
Regeneron Study Site Indianapolis Indiana 46260
Regeneron Study Site Iowa City Iowa 52242
Regeneron Study Site Louisville Kentucky 40202
Regeneron Study Site Louisville Kentucky 40217
Regeneron Study Site New Orleans Louisiana 70112
Regeneron Study Site New Orleans Louisiana 70122
Regeneron Study Site Baltimore Maryland 21201
Regeneron Study Site Boston Massachusetts 02111
Regeneron Study Site Boston Massachusetts 02115
Regeneron Study Site Boston Massachusetts 02118
Regeneron Study Site Grand Rapids Michigan 49503
Regeneron Study Site Royal Oak Michigan 48073
Regeneron Study Site Rochester Minnesota 55905
Regeneron Study Site Chesterfield Missouri 63017
Regeneron Study Site St Louis Missouri 63104
Regeneron Study Site St Louis Missouri 63110
Regeneron Study Site Omaha Nebraska 68198-5400
Regeneron Study Site Las Vegas Nevada 89109
Regeneron Study Site Englewood New Jersey 07631
Regeneron Study Site Hackensack New Jersey 07601
Regeneron Study Site Morristown New Jersey 07960
Regeneron Study Site Neptune City New Jersey 07753
Regeneron Study Site Pennington New Jersey 08534
Regeneron Study Site Summit New Jersey 07901
Regeneron Study Site Teaneck New Jersey 07666
Regeneron Study Site Albuquerque New Mexico 87108
Regeneron Study Site Brooklyn New York 11219
Regeneron Study Site Buffalo New York 14203
Regeneron Study Site 1 Buffalo New York 14215
Regeneron Study Site 2 Buffalo New York 14215
Regeneron Study Site Jamaica New York 11432
Regeneron Study Site New York New York 10003
Regeneron Study Site New York New York 10019
Regeneron Study Site New York New York 10025
Regeneron Study Site New York New York 10029
Regeneron Study Site New York New York 10032
Regeneron Study Site New York New York 10037
Regeneron Study Site Rochester New York 14642
Regeneron Study Site Syracuse New York 13210
Regeneron Study Site The Bronx New York 10451
Regeneron Study Site The Bronx New York 10461
Regeneron Study Site West Islip New York 11795
Regeneron Study Site White Plains New York 10601
Regeneron Study Site Chapel Hill North Carolina 27599
Regeneron Study Site Greensboro North Carolina 27408
Regeneron Study Site Columbus Ohio 43210
Regeneron Study Site Columbus Ohio 43215
Regeneron Study Site Dayton Ohio 45409
Regeneron Study Site Portland Oregon 97213
Regeneron Study Site Portland Oregon 97239
Regeneron Study Site Philadelphia Pennsylvania 19140
Regeneron Study Site Providence Rhode Island 02903
Regeneron Study Site Providence Rhode Island 02906
Regeneron Study Site Sioux Falls South Dakota 57108
Regeneron Study Site 1 Amarillo Texas 79106
Regeneron Study Site 2 Amarillo Texas 79106
Regeneron Study Site Dallas Texas 75235
Regeneron Study Site Dallas Texas 75246
Regeneron Study Site Dallas Texas 75390
Regeneron Study Site Houston Texas 77004
Regeneron Study Site Houston Texas 77024
Regeneron Study Site Houston Texas 77030
Regeneron Study Site Lubbock Texas 79410
Regeneron Study Site Sugar Land Texas 77479
Regeneron Study Site Tyler Texas 75701
Regeneron Study Site Murray Utah 84107
Regeneron Study Site Salt Lake City Utah 84143
Regeneron Study Site Richmond Virginia 23298
Regeneron Study Site Everett Washington 98201
Regeneron Study Site 1 Seattle Washington 98122
Regeneron Study Site Madison Wisconsin 53792

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 27 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT04426695, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Jan 26, 2023 · Synced Jul 22, 2026

Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.

Open the official record

The complete protocol, eligibility criteria, and contact information for NCT04426695 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →