A Study of Ad26.COV2.S for the Prevention of SARS-CoV-2-Mediated COVID-19 in Adult Participants (ENSEMBLE)
Participants With or Without Stable Co-morbidities Associated With Progression to Severe COVID-19 at Different Stages of the Protocol

About this trial
This is an interventional prevention trial for Participants With or Without Stable Co-morbidities Associated With Progression to Severe COVID-19 at Different Stages of the Protocol focused on measuring Prevention, Vaccine
Eligibility Criteria
Inclusion Criteria:
- Contraceptive (birth control) use should be consistent with local regulations regarding the acceptable methods of contraception for those participating in clinical studies
- All participants of childbearing potential must: have a negative highly sensitive urine pregnancy test at screening; and have a negative highly sensitive urine pregnancy test immediately prior to each study vaccine administration
- Participant agrees to not donate bone marrow, blood, and blood products from the first study vaccine administration until 3 months after receiving the last dose of study vaccine
- Must be willing to provide verifiable identification, has means to be contacted and to contact the investigator during the study
- Must be able to read, understand, and complete questionnaires in the electronic clinical outcome assessment (eCOA) (that is, the coronavirus disease-2019 [COVID 19] signs and symptoms surveillance question, the e-Diary, and the electronic patient-reported outcomes (ePROs). Note: Participants with visual impairment are eligible for study participation and may have caregiver assistance in completing the electronic clinical outcome assessment (eCOA) questionnaires
Exclusion Criteria:
- Participant has a clinically significant acute illness (this does not include minor illnesses such as diarrhea or mild upper respiratory tract infection) or temperature greater than or equal to (>=) 38.0 degree Celsius (100.4-degree Fahrenheit) within 24 hours prior to the planned first dose of study vaccine; randomization at a later date is permitted at the discretion of the investigator and after consultation with the sponsor
- Participant received or plans to receive: (a) licensed live attenuated vaccines - within 28 days before or after planned administration of study vaccine ; and (b) other licensed (not live) vaccines - within 14 days before or after planned administration of study vaccine
- Participant previously received a coronavirus vaccine
- Participant received an investigational drug (including investigational drugs for prophylaxis of COVID-19) within 30 days or used an invasive investigational medical device within 30 days or received investigational immunoglobulin (Ig) or monoclonal antibodies within 3 months, or received convalescent serum for COVID-19 treatment within 4 months or received an investigational vaccine (including investigational Adenoviral-vectored vaccines) within 6 months before the planned administration of the first dose of study vaccine or is currently enrolled or plans to participate in another investigational study during the course of this study
Sites / Locations
- Synexus Clinical Research US, Inc
- University of Alabama Birmingham
- Alabama Vaccine Research Clinic at UAB
- Optimal Research
- Synexus Clinical Research US, Inc
- VA Medical Center
- Central Phoenix Medical Clinic
- Quality of Life Medical & Research Center, LLC
- Synexus Clinical Research US, Inc
- University of Arkansas for Medical Sciences
- Central Arkansas Veterans Healthcare System
- Anaheim Clinical Trials, LLC
- Ark Clinical Research
- Anthony Mills Medical, Inc
- Stanford University Medical Center
- UCSD Antiviral Research Center AVRC
- Wr-McCr, Llc
- VA Medical Center
- Childrens Hospital Colorado
- Rocky Mountain Regional VA Medical Center
- Avail Clinical Research, LLC
- North Florida South Georgia Veteran Health System
- Velocity Clinical Research, Hallandale Beach
- Research Centers of America, LLC
- Suncoast Research Group
- University of Miami - Miller School of Medicine
- Orlando Immunology Center
- Advent Health Orlando
- Synexus Clinical Research US, Inc
- Synexus Clinical Research US, Inc
- James A Haley VA Hospital GNS
- Synexus Clinical Research US, Inc
- Emory University of Medicine
- The Hope Clinic at Emory University
- Atlanta VA Medical Center
- Northwestern University
- Jesse Brown VAMC Department of Surgery
- Rush University Medical Center
- University of IL Chicago
- The University Of Chicago Medicine
- Optimal Research
- Buynak Clinical Research
- Johnson County Clin-Trials
- Central Kentucky Research Associates, Inc.
- University of Kentucky
- University of Louisville
- Benchmark Research
- Clinical Trials Management, LLC
- New Orleans Adolescent Trials Unit CRS
- Southeast Louisiana Veterans Health Care Center
- Ochsner Clinic Foundation
- Baltimore VA Medical Center
- Optimal Research
- Meridian Clinical Research, LLC
- Massachusetts General Hospital
- The Brigham and Women's Hospital, Inc.
- University of Michigan Neuorsurgery A. Alfred Taubman Health Care Center
- Henry Ford Health System
- Cherry Street Services, Inc.
- Abbott Northwestern Hospital Clinic
- University of Mississippi Medical Center
- MediSync Clinical Research
- The Center For Pharmaceutical Research
- Saint Louis University
- Washington University School of Medicine
- Synexus Clinical Research US, Inc
- Clinical Research Center of Nevada
- Clinical Research Consortium, an AMR company
- VA Sierra Nevada Health Care System
- Rutgers Robert Wood Johnson Medical School
- Saint Michaels Medical Center
- Raymond G. Murphy VA Medical Center
- Bronx Veterans Affairs Medical Center
- Meridian Clinical Research, LLC
- Icahn School of Medicine at Mount Sinai
- Harlem Hospital Center
- New York Blood Center
- Rochester Clinical Research, Inc
- Tryon Medical Group
- Carolina Institute for Clinical Research
- Durham VAMC
- Wake Research Associates
- Wake Forest Baptist Medical Center
- Synexus Clinical Research US, Inc
- CTI Clinical Trial and Consulting Services
- Synexus Clinical Research US, Inc
- Velocity Clinical Research
- Rapid Medical Research
- Synexus Clinical Research US, Inc
- Corvallis Clinic PC
- Clinical Research Institute of Southern Oregon, P.C.
- Oregon Health & Science University
- University of Pennsylvania
- Temple University Hospital
- University of Pittsburgh
- Synexus Clinical Research US, Inc
- VA Medical Center
- Coastal Carolina Research Center
- PMG Research of Charleston, LLC
- Spartanburg Medical Research
- St Jude Children's Research Hospital
- Vanderbilt University Medical Center
- Benchmark Research
- Optimal Research, LLC
- AIDS Arms Incorporated Trinity Health and Wellness Center
- Synexus Clinical Research US, Inc
- Baylor Scott & White Research Institute
- North Texas Infectious Diseases Consultants
- The University of Texas Health Science Center at Houston
- Texas Center for Drug Development, Inc
- Gordon Crofoot, MD
- Clinical Trials of Texas, Inc
- Synexus Clinical Research US, Inc
- Synexus Clinical Research US, Inc
- University of Utah
- Advanced Clinical Research
- Kaiser Permanente Washington Health Research Institute
- CIPREC
- Helios Salud Sa
- CEMEDIC
- Centro Medico Viamonte SRL
- Clinical Trials Division-Stamboulian Servicios de Salud
- Clínica y Maternidad Suizo Argentina
- Fundacion Huesped
- CEMIC Saavedra
- Hospital J. M. Ramos Mejía
- Instituto Medico Platense
- Hospital Italiano de La Plata
- DIM Clinica Privada
- Faculdade de Medicina Barretos FACISB
- Universidade Federal De Minas Gerais - Hospital das Clínicas
- Santa Casa de Misericordia de Belo Horizonte
- L2IP - Instituto de Pesquisas Clínicas
- Sociedade Campineira de Educacao e Instrucao - Hospital e Maternidade Celso Pierro
- Fundação Universidade Federal de Mato Grosso do Sul
- Sociedade Literaria e Caritativa Santo Agostinho - Hospital Sao Jose
- Oncovida - Centro de Onco-Hematologia de Mato Grosso
- Hospital Nossa Senhora Das Gracas
- Centro de Estudos e Pesquisas em Moléstias Infecciosas
- Hospital das Clinicas de Porto Alegre
- Hospital Nossa Senhora da Conceicao S.A
- Hospital das Clínicas da Faculdade de Medicina de RPUSP - HCRP
- Ministerio da Saude - Hospital dos Servidores do Estado - RJ
- Instituto Brasil de Pesquisa Clinica
- Fundacao Oswaldo Cruz
- Municipio de Nova Iguacu - Hospital Geral de Nova Iguacu
- Fundação Bahiana De Infectologia
- Universidade Municipal de Sao Caetano do Sul
- Fundação Faculdade Regional de Medicina de São José do Rio Preto - Hospital de Base
- Instituto de infectologia Emilio Ribas
- Centro de Referencia E Treinamento Dst/Aids
- Hospital Das Clinicas Da Faculdade De Medicina Da USP
- CPQuali Pesquisa Clinica LTDA ME
- Sociedade Beneficente de Senhoras - Hospital Sírio Libanês
- Real e Benemérita Associação Portuguesa de Beneficência
- CEPIC - Centro Paulista de Investigação Clínica e Serviços Médicos
- Centro de Estudios Clínicos e Investigación Médica (CeCim)
- Facultad de Medicina Universidad de Chile
- Hospital Padre Hurtado
- Centro de Investigacion del Maule
- Hospital Dr Hernan Henriquez Aravena
- Centro de Estudios Clínicos V Región Ltda
- Clinica de la Costa
- Centro de Reumatologia y Ortopedia
- Hospital Universidad del Norte
- Centro de Atencion e Investigacion Medica S.A. - CAIMED
- Medplus Medicina Prepagada S.A.
- Solano y Terront Servicios Médicos Ltda.
- Centro de Investigaciones Clinicas S.A.S.
- Fundación Valle del Lili
- Fundación Cardiovascular de Colombia - Instituto del Corazón Floridablanca
- Fundacion Oftalmologica de Santander - FOSCAL
- Programa de Estudio y Control de Enfermedades Tropicales
- Fundacion Centro de Investigacion Clinica CIC
- Hospital Pablo Tobon Uribe
- Instituto Nacional de Ciencias Medicas y Nutrición Salvador Zubirán
- Instituto Nacional de Salud Publica
- Hospital Civil Fray Antonio Alcalde
- Unidad de Atención Medica e Investigacion en Salud (UNAMIS)
- Centro Medico Nacional Siglo XXI IMSS
- CAIMED Investigacion en salud S.A de C.V.
- Instituto Nacional de Enfermedades Respiratorias
- Hospital Universitario de Nuevo Leon 'Dr Jose Eleuterio Gonzalez'
- Infectolab
- Centro de Invetigaciones Medicas
- Hospital Nacional Daniel Alcides Carrion
- Centro de Investigaciones Tecnologicas, Biomedica y medio ambientales (CITBM)
- Asociacion Civil Selva Amazonica (ACSA)
- Asociacion Civil Impacta Salud y Educacion - Barranco
- Hospital Nacional Edgardo Rebagliati Martins
- Hospital Nacional Arzobispo Loayza
- Asociacion Civil Via Libre
- Instituto de Investigacion Nutricional
- Asociacion Civil Impacta Salud y Educacion- San Miguel CRS
- Josha Research
- Synexus Helderberg Clinical Research Centre
- Family Clinical Research Unit FAM-CRU
- TASK Central
- Desmond Tutu HIV Foundation
- University of Cape Town IDM/CIDRI Research Site
- Desmond Tutu Hiv Foundation - University Of Cape Town
- Masiphumelele Research Centre
- Ndlovu Elandsdoorn Site
- SA Medical Research Council
- SA Medical Research Council
- CRISMO Bertha Gxowa Research Centre
- Shandukani Research Centre
- The Aurum Institute Klerksdorp Clinical Research Centre
- Qhakaza Mbokodo Research Centre
- South African Medical Research Council Chatsworth Clinical Research Site
- Centre for the AIDS Programme of Research in South Africa
- Stanza Clinical Research Centre : Mamelodi
- Mzansi Ethical Research Centre
- Nelson Mandela Academic Clinical Research Unit 'NeMACRU'
- PHOENIX PHARMA (Pty) Ltd
- MeCRU Clinical Research Unit
- Synexus Watermeyer
- The Aurum Institute Rustenburg Clinical Research Site
- Setshaba Research Centre
- Perinatal HIV Research Unit (PHRU), Kliptown
- Perinatal HIV Research Unit, Chris Hani Baragwanath Hospital
- The Aurum Institute: Tembisa - Clinic 4
- CAPRISA Vulindlela Clinic
- University of Witwatersrand - Helen Joseph Hospital - Themba Lethu Hiv Research Centre
- SATVI, Brewelskloof Hospital
Arms of the Study
Arm 1
Arm 2
Experimental
Experimental
Ad26.COV2.S
Placebo
Participants will receive intramuscular (IM) injection of Ad26.COV2.S at a dose level of 5*10^10 virus particles (vp) as single dose vaccine on Day 1. At Year 1 (booster visit), participants who previously received any coronavirus disease-2019 (COVID-19) vaccination (as primary regimen or additional dose) will be offered a single booster dose of Ad26.COV2.S at the 5*10^10 vp dose level.
Participants will receive IM injection of placebo on Day 1. At Month 6/unblinding visit, post Emergency Use Authorization (EUA), conditional licensure, or approval for the single dose regimen, participants initially receiving placebo will be offered to receive a single dose of Ad26.COV2.S vaccine IM at a dose level of 5*10^10 vp. At Year 1 (booster visit), participants who previously received any COVID-19 vaccination (as primary regimen or additional dose) will be offered a single booster dose of Ad26.COV2.S at the 5*10^10 vp dose level.