An Open Study of the Safety, Tolerability and Immunogenicity of the Drug "Gam-COVID-Vac" Vaccine Against COVID-19

• ClinicalTrials.gov Identifier: NCT04436471
• Recruitment Status: Completed
• First Posted: June 18, 2020
• Last Update Posted: August 12, 2020
• Sponsor: Gamaleya Research Institute of Epidemiology and Microbiology, Health Ministry of the Russian Federation
• Collaborator: Acellena Contract Drug Research and Development
• Information provided by (Responsible Party): Gamaleya Research Institute of Epidemiology and Microbiology, Health Ministry of the Russian Federation

Study Description

Brief Summary:

The purpose of the study is to assess safety, tolerability and immunogenicity of the drug "Gam-COVID-Vac ", a solution for intramuscular administration, with the participation of healthy volunteers

Study objectives A safety and tolerability assessment of the drug "Gam-COVID-Vac ", solution for intramuscular administration, using single dose of each component (Stage 1).

A safety and tolerability assessment of the drug "Gam-COVID-Vac ", solution for intramuscular administration, using prime-boost immunization according to the proposed scheme (Stage 2).

Post-vaccination immunity assessment at different time points after vaccination by:

• Determination of antigen-specific antibody titer in blood serum by ELISA by comparison with baseline values before the vaccine administration and at days 14, 21, 28, and 42 after vaccination (hereinafter, the countdown comes from the first time of the vaccine administration);
• Determination of virus neutralizing antibody titer before and at days 14, 28, and 42 after vaccination;
• Determination of antigen-specific cellular immunity (specific T-cell immunity) before the vaccine administration and at days 14 and 28 after vaccination.

Condition or disease	Intervention/treatment	Phase
Preventive Immunization COVID-19	Biological: Gam-COVID-Vac	Phase 1; Phase 2

Detailed Description:

An open two stage non-randomized Phase 1 study with the participation of healthy volunteers. This clinical trial is an open study of safety, tolerability and immunogenicity of the drug "Gam-COVID-Vac ", ly solution for intramuscular administration, with the participation of healthy volunteers.

Stage one

1. the First group, 9 volunteers, will receive the drug, a solution for intramuscular administration, in the mode of single immunization with component 1 in a full therapeutic dose.
2. the Second group, 9 volunteers, will receive the drug, a solution for intramuscular administration, in the mode of single immunization with component 2 in the full therapeutic dose.

The studied drugs will be administered to a total of 18 volunteers in a hospital setting and after administration, the drug's safety will be continuously monitored for 5 days. Based on the results of the safety assessment, the Chief investigator decides to proceed to the second stage of the study on the 5th day after the introduction of the studied drugs.

Second stage The second stage will include 20 volunteers and three understudies. Volunteers of the second stage will be vaccinated no earlier than 5 days after vaccination of participants of the first stage.

Volunteers participating in the second stage of the study (a total of 20 people) will receive the study drug according to the booster scheme: the introduction of component 1 will be carried out on day 1, and component 2-on the 21st day of the study. Follow-up will be carried out during 4 visits: on 7, 14, 28, 42 days after administration of the drug, and phone calls at days 90 and 180

Throughout the inpatient observation and the follow-up period of visits during the entire study, safety information will be collected

Study Design

• Study Type: Interventional (Clinical Trial)
• Actual Enrollment: 38 participants
• Allocation: Non-Randomized
• Intervention Model: Parallel Assignment
• Intervention Model Description: An open, prospective, two-stage, non-randomized, first-phase study involving healthy volunteers
• Masking: None (Open Label)
• Primary Purpose: Prevention
• Official Title: An Open Study of the Safety, Tolerability and Immunogenicity of the Drug "Gam-COVID-Vac" a Solution for Intramuscular Injection With the Participation of Healthy Volunteers
• Actual Study Start Date: June 17, 2020
• Actual Primary Completion Date: August 3, 2020
• Actual Study Completion Date: August 10, 2020

Arms and Interventions

Arm	Intervention/treatment
Experimental: Component 1; rAd26 Component, 1 vaccination Component 1 consists of a recombinant adenovirus vector based on the human adenovirus type 26, containing the SARS-CoV-2 S protein gene	Biological: Gam-COVID-Vac; adenoviral-based vaccine against SARS-CoV-2
Experimental: Component 2; rAd5 Component, 1 vaccination Component 2 consists of a vector based on the human adenovirus type 5, containing the SARS-CoV-2 S protein gene.	Biological: Gam-COVID-Vac; adenoviral-based vaccine against SARS-CoV-2
Experimental: Prime-Boost Immunization; Day 1 rAd26 Component Day 21 rAd5 Component	Biological: Gam-COVID-Vac; adenoviral-based vaccine against SARS-CoV-2

Outcome Measures

Primary Outcome Measures :

1. Changing ofantibody levels against the SARS-CoV-2 glycoprotein S in 42 days [ Time Frame: at days 0,14, 21, 28, 42 ]
   Determination of antibody levels against the SARS-CoV-2 glycoprotein S measured by an ELISA vs. baseline values
2. Number of Participants With Adverse Events [ Time Frame: through the whole study, an average of 180 days ]
   Determination of Number of Participants With Adverse Events

Secondary Outcome Measures :

1. Changing of of virus neutralizing antibody titer [ Time Frame: at days 0,14, 28, 42 ]
   Determination of virus neutralizing antibody titer
2. Changing of antigen-specific cellular immunity level [ Time Frame: at days 0,14, 42 ]
   Determination of antigen-specific cellular immunity (specific T-cell immunityin particular, IFN-gamma production or lymphoproliferation)

Eligibility Criteria

• Ages Eligible for Study: 18 Years to 60 Years (Adult)
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: Yes

Criteria

Inclusion Criteria:

1. males and females within the age range from 18 to 60 years;
2. written informed consent;
3. subject body mass index (BMI): 18.5 ≤ BMI ≤ 30;
4. negative PCR test results for SARS-CoV-2 (during the screening);
5. no history of COVID-2019 disease;
6. no contacts of volunteers with patients with COVID-2019 for at least 14 days;
7. negative test results for IgM and IgG antibodies to SARS-CoV-2;
8. subject agrees to use effective contraceptive methods during the entire period of participation in the study;
9. absence of acute infectious diseases at the time of vaccine administration and 14 days before vaccination;
10. negative pregnancy test of blood or urine (for women of childbearing age);
11. subject has negative tests for HIV, hepatitis B and С, syphilis or confirmed medical history;
12. subject has a negative result of the urine test for residual narcotic drugs;
13. negative test for alcohol in exhaled air;
14. the absence of malignant diseases of any nature and localization;
15. in medical history and based on the screening results, subject has no diseases or pathologies of the gastrointestinal system, liver, kidneys, cardiovascular system and blood, CNS, musculoskeletal system, urogenital, immune and endocrine systems that from the point of view of the researcher and/or of the organizer of the study, may affect the safety of the volunteer and the evaluation of the study results (clinical, instrumental and laboratory tests did not reveal diseases or clinically significant deviations).

Exclusion Criteria:

1. volunteer involvement in another study over the last 90 days;
2. any vaccination over the last 30 days;
3. history of COVID-2019 disease;
4. positive PCR test results for SARS-CoV-2 (during the screening);
5. positive test results for IgM and IgG antibodies to SARS-CoV-2;
6. health staff in contact with people with COVID-2019;
7. respiratory symptoms in the last 14 days;
8. the administration of immunoglobulins or other blood products in the last 3 months;
9. regular current or past use of narcotic drugs;
10. subject has received immunosuppressive and/or immunomodulating agents within 6 months before the start of the study;
11. pregnancy or breast feeding;
12. exacerbation of allergic diseases at the time of vaccination;
13. subject has systolic blood pressure less than 100 mm Hg or greater than 139 mm Hg; diastolic blood pressure less than 60 mm Hg or greater than 90 mm Hg; heart rate lower than 60 beats per minute or above 100 beats per minute;
14. a burdened allergic history (anaphylactic shock, Quincke's edema, polymorphic exudative eczema, atopy, a history of serum sickness, hypersensitivity or allergic reactions to the introduction of any vaccines in history, known allergic reactions to vaccine components, etc.);
15. a history of autoimmune diseases in the volunteer's medical history and in relatives' medical history of the 1-2 degree of kinship;
16. subject smokes more than 10 cigarettes per day;
17. alcohol intake exceeding the low-risk level: no more than 20 grams of pure alcohol per day, no more than 5 days a week, alcohol intake within 48 hours before the administration of the drug;
18. planned hospitalization and/or surgery during the period of participation in the study, as well as 4 weeks before the expected date of the administration of the drug;
19. the presence of an associated disease that may affect the assessment of the results of the study;
20. any conditions that, according to the researcher's doctor, may be a contraindication to the participation in the study.

Contacts and Locations

Locations

Russian Federation

Main military clinical hospital named after academician N. N. Burdenko

Moscow, Russian Federation

Sponsors and Collaborators

Gamaleya Research Institute of Epidemiology and Microbiology, Health Ministry of the Russian Federation

Acellena Contract Drug Research and Development

More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

Logunov DY, Dolzhikova IV, Zubkova OV, Tukhvatullin AI, Shcheblyakov DV, Dzharullaeva AS, Grousova DM, Erokhova AS, Kovyrshina AV, Botikov AG, Izhaeva FM, Popova O, Ozharovskaya TA, Esmagambetov IB, Favorskaya IA, Zrelkin DI, Voronina DV, Shcherbinin DN, Semikhin AS, Simakova YV, Tokarskaya EA, Lubenets NL, Egorova DA, Shmarov MM, Nikitenko NA, Morozova LF, Smolyarchuk EA, Kryukov EV, Babira VF, Borisevich SV, Naroditsky BS, Gintsburg AL. Safety and immunogenicity of an rAd26 and rAd5 vector-based heterologous prime-boost COVID-19 vaccine in two formulations: two open, non-randomised phase 1/2 studies from Russia. Lancet. 2020 Sep 26;396(10255):887-897. doi: 10.1016/S0140-6736(20)31866-3. Epub 2020 Sep 4. Erratum In: Lancet. 2021 Jan 9;397(10269):98.

• Responsible Party: Gamaleya Research Institute of Epidemiology and Microbiology, Health Ministry of the Russian Federation
• ClinicalTrials.gov Identifier: NCT04436471
• Other Study ID Numbers: 02-Gam-COVID-Vac-2020
• First Posted: June 18, 2020
• Last Update Posted: August 12, 2020
• Last Verified: June 2020

Individual Participant Data (IPD) Sharing Statement:

• Plan to Share IPD: No

• Studies a U.S. FDA-regulated Drug Product: No
• Studies a U.S. FDA-regulated Device Product: No

Keywords provided by Gamaleya Research Institute of Epidemiology and Microbiology, Health Ministry of the Russian Federation:

COVID-19; SARS-CoV-2; vector vaccine

Additional relevant MeSH terms:

COVID-19; Pneumonia, Viral; Pneumonia; Respiratory Tract Infections; Infections; Virus Diseases; Coronavirus Infections; Coronaviridae Infections; Nidovirales Infections; RNA Virus Infections; Lung Diseases; Respiratory Tract Diseases