A Randomized, Open-label, Dose-ranging Study in Adults and Pediatric Individuals ≥ 12 Years of Age to Assess the Safety, Immunogenicity, Pharmacokinetics, and Pharmacodynamics of AZD7442, for Pre-exposure Prophylaxis of COVID-19 (ENDURE)

  • End date
    Jul 24, 2024
  • participants needed
  • sponsor
Updated on 4 October 2022


A Phase II Randomized, Open-label, Multicenter, Dose-ranging Study in Adults and Pediatric Individuals ≥ 12 years of Age to Assess the Safety, Immunogenicity, Pharmacokinetics, and Pharmacodynamics of AZD7442, a Combination Product of Two Monoclonal Antibodies (Tixagevimab and Cilgavimab), for Pre-exposure Prophylaxis of COVID-19


AZD7442, a combination of 2 monoclonal antibodies (tixagevimab [investigational name, AZD8895] and cilgavimab [investigational name, AZD1061]), is being developed for the prophylaxis and treatment of coronavirus disease 2019 (COVID-19).

This Phase II dose-ranging study will investigate the safety, immunogenicity, pharmacokinetic (PK), and pharmacodynamic (PD) profiles of AZD7442 repeat dosing regimens for preexposure prophylaxis of COVID-19 in adults and pediatric individuals (≥ 12 years of age weighing at least 40 kg), who are moderately to severely immunocompromised.

Condition Coronavirus Disease 2019 (COVID-19)
Treatment AZD7442 (tixagevimab [AZD8895] + cilgavimab [AZD1061])
Clinical Study IdentifierNCT05375760
Last Modified on4 October 2022


Yes No Not Sure

Inclusion Criteria

Capable of giving signed informed consent as described in Appendix A which includes compliance with the requirements and restrictions listed in the ICF and in this protocol. For pediatric participants: informed assent is to be provided by the participant; informed consent must be provided by the participant's legal guardian
Ensure that participants who are considered by the Investigator clinically unable to consent at screening and who are entered into the study by the consent of a legally acceptable representative show evidence of assent, as applicable in accordance with local regulations
Participant must be an adult (≥ 18 years of age) or pediatric individual (≥ 12 to < 18 years of age weighing ≥ 40 kg) at the time of signing the ICF or assent (for pediatric participants)

Exclusion Criteria

Any clinical signs and symptoms consistent with COVID-19, eg, fever, dry cough, dyspnea, sore throat, fatigue for ≥ 5 days or confirmed COVID-19 infection by appropriate laboratory test within 28 days prior to screening
History or current hospitalization for worsening disease during the one month prior to screening, with no change in condition at the time of study enrollment as judged by the Investigator
Current need for hospitalization or immediate medical attention in a clinic or emergency room service in the clinical opinion of the Investigator
Previous hypersensitivity, infusion-related reaction, or severe adverse reaction following administration of a mAb
Known history of allergy to any component of the IMP formulation
History of clinically significant bleeding disorder (eg, factor deficiency, coagulopathy, or platelet disorder), or prior history of significant bleeding or bruising following IV infusions or venepuncture
Any other significant disease, disorder, or finding that may significantly increase the risk to the participant because of participation in the study, affect the ability of the participant to participate in the study, or impair interpretation of the study data
Any co-morbidity requiring surgery within 7 days prior to study entry, or that is considered life-threatening in the opinion of the Investigator within 30 days prior to study entry
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