A Study to Determine the Safety and Efficacy of SARS-CoV-2 mRNA Vaccine CVnCoV in Adults for COVID-19
Covid19, SARS-CoV-2

About this trial
This is an interventional prevention trial for Covid19 focused on measuring Vaccine
Eligibility Criteria
Inclusion Criteria:
- Male or female participants 18 years of age or older.
- Be willing and able to provide written informed consent prior to initiation of any trial procedures.
- Expected compliance with protocol procedures and availability for clinical follow-up through the last planned visit.
- Females of non-childbearing potential defined as follows: surgically sterile (history of bilateral tubal ligation/occlusion, bilateral oophorectomy or hysterectomy) or postmenopausal {defined as amenorrhea for ≥12 consecutive months prior to screening (Day 1) without an alternative medical cause}. A follicle-stimulating hormone (FSH) level may be measured at the discretion of the Investigator to confirm postmenopausal status.
- Females of childbearing potential: negative pregnancy test (human chorionic gonadotropin [hCG]) within 24 hours prior to each trial vaccination on Day 1 and Day 29.
Females of childbearing potential must use highly effective methods of birth control from 2 weeks before the first administration of the trial vaccine until 3 months following the last administration. The following methods of birth control are considered highly effective when used consistently and correctly:
- Combined (estrogen and progestogen containing) hormonal contraception associated with inhibition of ovulation (oral, intravaginal or transdermal);
- Progestogen-only hormonal contraception associated with inhibition of ovulation (oral, injectable or implantable);
- Intrauterine devices;
- Intrauterine hormone-releasing systems;
- Bilateral tubal ligation;
- Vasectomized or infertile partner;
- Sexual abstinence
- {periodic abstinence (e.g., calendar, ovulation, symptothermal and post-ovulation methods) and withdrawal are not acceptable}.
Exclusion Criteria:
- History of virologically-confirmed COVID-19 illness.
- For females: pregnancy or lactation.
- Use of any investigational or non-registered product (vaccine or drug) within 28 days preceding the administration of trial vaccine or planned use during the trial.
- Receipt of any licensed vaccines within 28 days (for live vaccines) or 14 days (for inactivated or any other vaccines) prior to administration of the first trial vaccine.
- Prior administration of any investigational SARS-CoV-2 vaccine or another coronavirus (SARS-CoV, Middle East Respiratory Syndrome-CoV) vaccine or planned used during the trial.
- Any treatment with immunosuppressants or other immune-modifying drugs (including but not limited to anabolic steroids, corticosteroids, biologicals and methotrexate) for > 14 days total within 6 months preceding the administration of trial vaccine or planned use during the trial. For corticosteroid use, this means prednisone or equivalent, 0.5 mg/kg/day for 14 days or more. The use of inhaled, topical, or localized injections of corticosteroids (e.g., for joint pain/inflammation) is permitted.
- Any medically diagnosed or suspected immunosuppressive or immunodeficient condition based on medical history and physical examination including known infection with human immunodeficiency virus (HIV), hepatitis B virus (HBV) or hepatitis C virus (HCV); current diagnosis of or treatment for cancer including leukemia, lymphoma, Hodgkin disease, multiple myeloma or generalized malignancy; chronic renal failure or nephrotic syndrome; and receipt of an organ or bone marrow transplant.
- History of angioedema (hereditary or idiopathic) or history of any anaphylactic reaction.
- History of potential immune-mediated disease (pIMD).
- History of allergy to any component of CVnCoV.
- Administration of immunoglobulins or any blood products within 3 months prior to the administration of trial vaccine or planned receipt during the trial.
- Participants with a significant acute or chronic medical or psychiatric illness that, in the opinion of the Investigator, precludes trial participation (e.g., may increase the risk of trial participation, render the participant unable to meet the requirements of the trial, or may interfere with the participant's trial evaluations). These include severe and/or uncontrolled cardiovascular disease, gastrointestinal disease, liver disease, renal disease, respiratory disease, endocrine disorder, and neurological and psychiatric illnesses. However, those with controlled and stable cases can be included in the trial.
- Participants with impaired coagulation or any bleeding disorder in whom an IM injection or a blood draw is contraindicated.
- Foreseeable non-compliance with the trial procedure as judged by the Investigator.
Roll-over Criteria for the Open-label Phase:
- Participants must have received at least 1 dose of CVnCoV during the randomized observer blinded phase.
- Participants must provide additional written informed consent to be eligible for the open label phase.
Sites / Locations
- Instituto de Investigaciones Clinicas Quilmes
- Hospital Interzonal General Agudos Prof. Dr. Ramon Carrillo
- Hospital Interzonal General de Agudos Vicente Lopez y Planes
- Hospital Zonal General de Agudos Descentralizado Evita Pueblo de Berazategui
- Fundación Cenit Para La Investigación En Neurociencias
- Instituto de Investigaciones Clínicas Mar del Plata
- Sanatorio Parque
- Corporación Médica Sanatorio
- Instituto De Investigaciones Clinica Zarate
- Cohezio - Bruxelles
- Mensura
- Universitair Ziekenhuis Gent
- Clínica de la Costa
- CAIMED - Bogota Clinical Research Center
- Centro de Estudios en Infectología Pediátrica (CEIP)
- Fundacion Dominicana de Perinatologia Pro Bebe
- Instituto Dermatológico Dominicano y Cirugía de Piel Dr. Huberto Bogaert Díaz
- Clínica Cruz Jiminian
- Hospital General Regional Marcelino Vélez Santana
- Uniklinik Köln
- Ludwig-Maximilians-Universität München
- Universitätsklinikum Tübingen - Institut für Tropenmedizin, Reisemedizin und Humanparasitologie
- Instituto Nacional De Ciencias Medicas Y Nutricion Salvador Zubiran
- CAIMED - México
- Panamerican Clinical research Mexico (Guadalajara)
- Panamerican Clinical Research Mexico S.A. DE C.V.
- Unidad de Medicina Especializada SMA
- Centro Medico Zambrano Hellion TecSalud
- Noordwest Ziekenhuisgroep
- Amsterdam Universitair Medische Centra - Academisch Medisch Centrum
- The Julius Center - Utrecht Science Park - Stratenum
- Centro De Vacunacion Internacional - CEVAXIN Chorreras
- Centro De Vacunacion Internacional - CEVAXIN 24 Diciembre
- Centro de Vacunacion Internacional - CEVAXIN Avenida Mexico
- Instituto de Investigaciones Científicas y Servicios de Alta Tecnología
- Centro de Investigaciones Tecnológicas, Biomédicas y Medioambientales
- Hospital de Chancay y Servicios básicos de Salud
- Clinica Medica San Martin
- Instituto de Investigación Nutricional - Las Gardenias
- Instituto de Investigación Nutricional - San Carlos
- Instituto de Investigación Nutricional
- Asociación Civil Impacta Salud y Educación
- Centro de Investigación para ensayos Clínicos UPCH
- OSI Eskerraldea-Enkarterri-Cruces/Hospital Universitario Cruces
- Hospital Universitario Donostia
- Hospital Clínico San Carlos
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Arm 5
Experimental
Placebo Comparator
Experimental
Placebo Comparator
Experimental
Randomized Observer-blinded Phase 2b: CVnCoV vaccine
Randomized Observer-blinded Phase 2b: Placebo
Randomized Observer-blinded Phase 3: CVnCoV vaccine
Randomized Observer-blinded Phase 3: Placebo
Open-label Phase
Participants will be vaccinated with CVnCoV 12 µg vaccine on Day 1 and Day 29 in the deltoid area, preferably in the non-dominant arm.
Participants will be administered the matching placebo on Day 1 and Day 29 in the deltoid area, preferably in the non-dominant arm.
Participants will be vaccinated with CVnCoV 12 µg vaccine on Day 1 and Day 29 in the deltoid area, preferably in the non-dominant arm.
Participants will be administered the matching placebo on Day 1 and Day 29 in the deltoid area, preferably in the non-dominant arm.
After unblinding, the trial will shift from a randomized observer-blinded to an open-label design, and the following cohorts will be defined: Cohort A: participants who received at least 1 dose of CVnCoV in the randomized observer-blinded phases and choose to receive an authorized/licensed vaccine for preventing COVID-19 (AV) as standard of care through their national vaccination program. Cohort B: participants who received at least 1 dose of CVnCoV in the randomized observer-blinded phases and choose to remain in the trial without receiving any AV. Participants on the placebo arm will be withdrawn.