Evaluation of ТВ/Flu-05Е Vaccine for the Prevention of Tuberculosis Infection in BCG-vaccinated Volunteers Aged 18-50 Years

NCT ID: NCT05945498

Last Updated: 2024-04-18

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1
• Total Enrollment: 51 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2023-05-10
• Study Completion Date: 2023-09-18

Brief Summary

The aim of the study is to investigate safety, reactogenicity and immunogenicity of the TB/Flu-05E single-dose intranasal vaccine for the prevention of Tuberculosis infection in BCG-vaccinated Volunteers aged 18-50 years.

Detailed Description

Study include 51 participants in two cohorts. At the first stage, 15 volunteers (Cohort 1), randomized in a 2:1 ratio (10 people in the vaccine group and 5 people in the placebo group) will be included in the study. At the second stage, the following 36 people (Cohort 2) will be included in the study, which will be randomly distributed (randomization) in a ratio of 2: 1 for the vaccine preparation (24 people) and placebo (12 people). Duration of the study for each participant is about 4 months (no more than 122 days).

Conditions

Tuberculosis Infection

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: QUADRUPLE

Study Groups

TB/Flu-05E vaccine

Single dose of 7.7 lg EID50 vector vaccine

Group Type: EXPERIMENTAL

TB/Flu-05E vaccine

Intervention Type: BIOLOGICAL

Participants will receive single intranasal injection of A/H1N1pdm09 recombinant attenuated influenza vector (7.7 lg EID50) with modified NS gene coding for the TB10.4 and HspX antigens of M. tuberculosis

Placebo

Single dose of placebo

Group Type: PLACEBO_COMPARATOR

Placebo

Intervention Type: BIOLOGICAL

Participants will receive single intranasal injection of placebo buffer solution

Interventions

TB/Flu-05E vaccine

Participants will receive single intranasal injection of A/H1N1pdm09 recombinant attenuated influenza vector (7.7 lg EID50) with modified NS gene coding for the TB10.4 and HspX antigens of M. tuberculosis

Intervention Type: BIOLOGICAL

Placebo

Participants will receive single intranasal injection of placebo buffer solution

Intervention Type: BIOLOGICAL

Eligibility Criteria

Inclusion Criteria

1. Healthy BCG-vaccinated men and women aged 18 to 50 years

2. Availability of signed informed consent

3. Diagnosed "healthy" according to the data of standard clinical, laboratory and instrumental examination methods, with the absence of clinically significant changes. Participants with chronic conditions that do not require special treatment, such as diabetes mellitus, hypertension, or heart disease, are eligible to participate in this study if the investigator considers the participant's condition to be medically stable

4. The ability and willingness to make entries in the diary of self-observation, as well as to carry out all the visits foreseen in the study for control medical observation

5. Consent to use effective contraceptive methods throughout their participation in the study.

6. Body weight ≥ 50 kg

7. HI antibody titers ≤1:20 to influenza A/H1N1pdm09

8. Negative test for alcohol in exhaled air

9. Consent to use effective contraceptive methods throughout their participation in the study

10. Values of the complete blood count and biochemical blood analysis (during the screening) within 0.9*reference range lower limit and 1,1 * reference range upper limit

11. Negative tests for HIV, hepatitis B, hepatitis C, and syphilis

Exclusion Criteria

1. Participation in another clinical study within three months prior to the start of the current study; planning to participate in another study during the current study period

2. Clinical, radiological or laboratory signs of active or previously transferred tuberculosis of any localization.

3. Passage in the past or at the present time of examination in anti-tuberculosis medical institutions

4. Existence in the past or present of contact with patients with any form of tuberculosis (at home, at work, in the circle of friends and acquaintances)

5. Tuberculous infection confirmed by the TB-FERON IGRA laboratory test

6. Immunization with BCG within six months prior to enrollment in the current study

7. Contact with COVID-19 patients within 14 days prior to the start of the clinical study

8. Positive rapid test result for SARS-CoV-2 antigen

9. Immunization with any other non-study vaccine product within three weeks prior to enrollment in the current study, or refusal to postpone such until the end of the three-week period after completion of the current study

10. Regular use of nasal irrigation therapy during the last six months prior to enrollment in the current study or episodic use of the above method of treatment in the two weeks prior to the screening

11. History of frequent nosebleeds (>5) during the year prior to the current study

12. Clinically significant anatomic pathology or the presence of surgical intervention in the sinus area, paranasal sinuses, or traumatic injuries of the nose within a month before screening

13. Symptoms of acute respiratory disease, including fever, or other acute illness at the time of screening or within two weeks prior to screening

14. Treatment with immunoglobulins or other blood derived medications in the three months prior to screening or planning such treatment during the period of participation in the current study; donation of blood/plasma (450 ml or more) less than 2 months prior to screening

15. The presence or suspicion of the presence of various immunosuppressive or immunodeficiency conditions or continuous use (the drug was prescribed for more than 14 days without a break) of immunosuppressive drugs, immunomodulators for 6 months before the screening (for corticosteroids, ≥0.5 mg/kg per day of prednisone or other corticosteroid equivalent; topical and inhaled steroids).

16. History of bronchial asthma

17. Hypersensitivity and the presence of severe allergic reactions, including Quincke's edema, anaphylactic shock after the previous administration of any vaccine

18. History of wheezing after previous immunization with live influenza vaccine

19. Other adverse events after immunization (fever above 40°C, syncope, non-febrile convulsions, anaphylaxis) when there is a minimal likelihood that they are associated with a previous administration of any vaccine

20. Suspicion of hypersensitivity to any component of the study vaccine, including egg protein

21. Seasonal (in spring or autumn) increased sensitivity to the effects of natural factors

22. Acute or chronic clinically significant lung, cardiovascular, hepatic, endocrine, neurological, or psychiatric disorders, or impaired renal function identified by history, physical examination, or clinical laboratory findings that, in the opinion of the investigator, may influence the outcome of the study

23. History of leukemia or any other malignant diseases of the blood or solid malignant neoplasms of other organs

24. History of thrombocytopenic purpura or bleeding disorders

25. History of convulsions

26. The presence or suspicion of the presence of various immunosuppressive or immunodeficiency conditions, including HIV infection

27. Tuberculosis or residual changes after tuberculosis according to the anamnesis and / or available medical documentation

28. Chronic alcohol dependence or chronic use of illicit drugs, drug abuse

29. Claustrophobia and social phobia according to history and / or available medical records

30. For women of reproductive age - lactation, pregnancy or suspected pregnancy, early postpartum period

31. Premenopausal women (last menstrual period <1 year prior to signing informed consent) who are not surgically sterile and women who are of reproductive potential but do not use or plan to use valid birth control throughout the study and do not agree to perform a urine pregnancy test while participating in the study

32. Military personnel undergoing military service on conscription

33. Persons in custody in pre-trial detention centers and serving sentences in places of deprivation of liberty

34. Special diet (eg, vegetarian, vegan, salt-restricted) or lifestyle (night work, extreme physical activity)

35. Any condition that, in the opinion of the investigator, may increase the risk to the health of a volunteer participating in the study or affect the results of the study

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 50 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Tatyana Zubkova

OTHER

Sponsor Role: lead

Responsible Party

Tatyana Zubkova

Head of the clinical department

Responsibility Role: SPONSOR_INVESTIGATOR

Locations

Smorodintsev Research Institute of Influenza

Saint Petersburg, , Russia

Countries

Russia

Other Identifiers

ВПТ-II-01/2022

Identifier Type: -

Identifier Source: org_study_id