Clinical trial NCT04632537: BCG Vaccination to Prevent COVID-19
Official title: Novel Use of an Existing Vaccine (BCG) Alliance: The NUEVA Trial
Study type: INTERVENTIONAL
Overall status: WITHDRAWN
Phase: PHASE3
Conditions: COVID-19
Keywords: COVID-19
BCG
vaccine
clinical trial
Lead sponsor: Henry M. Jackson Foundation for the Advancement of Military Medicine
Sponsor class: OTHER
Collaborators: name: Harvard Medical School (HMS and HSDM)
name: Uniformed Services University of the Health Sciences
name: United States Department of Defense
name: Defense Health Agency
First posted: 2020-11-17
Enrollment: 0
Sex: ALL
Minimum age (years): 18
Maximum age (years): 64
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: The current COVID-19 epidemic threatens to overwhelm the capacity of many countries to meet their populations' health care needs. Although several vaccines specific for SARS-CoV-2 have been or are being developed, these require testing in animal and human safety studies and they are unlikely to be available during the expected peak periods of the growing epidemic. Two groups at especially high risk of infection and disease are front line health care workers working directly with COVID-19 patients and elderly residents of group homes or facilities that provide skilled nursing care to this frail population. Interim measures to protect these groups while we await a high efficacy vaccine are desperately needed.

Based on the capacity of BCG to (1) reduce the incidence of respiratory tract infections in children and adults; (2) exert antiviral effects in experimental models; and (3) reduce viremia in an experimental human model of viral infection, we hypothesize that BCG vaccination may induce (partial) protection against susceptibility to and/or severity of SARS-CoV-2 infection.

This study will evaluate the efficacy of BCG to reduce risk of infection by SARS-CoV-2 and mitigate COVID-19 disease severity in at risk health care providers.

A phase III randomized controlled trial provides the highest validity to answer this research question. Given the immediate threat of the SARS-CoV-2 epidemic the trial has been designed as a pragmatic study with a highly feasible primary endpoint, which can be continuously measured. This allows for the most rapid identification of a beneficial outcome that would allow other at-risk individuals, including the control population, to also benefit from the intervention if and as soon as it has demonstrated efficacy and safety.

Detailed description: This study is a multi-center, prospective, double-blind, randomized placebo-controlled trial to assess the efficacy of intradermal TICE BCG (for intravesical use, Merck) BCG LIVE or placebo vaccine, in reducing the incidence of infection of SARS-CoV2 and severity of COVID-19 disease. This study proposes to examine BCG-induced nonspecific trained immunity to provide protection from SARS-CoV2 among health care workers who are likely to care for patients with COVID-19 illness, 18-64 years of age.

Up to 670 individuals will be screened to enroll 550 participants with a planned 50 person enrollment at USU site, 300 persons at Darnall Medical Center (CRDMC) and 200 persons at Brooke Army Medical Center (BAMC), resulting in 275 receiving BCG vaccine and 275 receiving placebo. To account for attrition prior to vaccination we will enroll up to 70 at USU, up to 350 at CRDMC and up to 250 at BAMC.

There are three phases in which research procedures will be completed: (1) initial screening for eligibility, consent, baseline testing; (2) enrollment, randomization, if pertains- prior to vaccination research blood draw for peripheral blood mononuclear cells (PBMC), and immunization with study vaccine (BCG or placebo); and (3) follow-up screening and testing.

Participants will be followed to assess whether infection with SARS-CoV-2 occurs:

Participants will complete intermittent surveys via an electronic system every 2 weeks to assess the presence of any flu-like symptom. Any positive response on the survey will trigger a nasopharyngeal swab to be collected to test for COVID-19 via rt-PCR.

All participants, regardless of survey responses, will have serology (4mL SST tube) for COVID-19 tested at monthly intervals during the 6 month follow-up period or until a positive test result occurs.

If a participant completes the follow-up period and does not test positive for COVID disease, study participation is complete.

If a participant does test positive for COVID-19 disease at any point during follow-up, disease status will be ascertained for up to two months from the time of positive test or until an outcome is available through one of the following mechanisms:

(1) an electronic survey if not admitted to the hospital, including questions about the number of days ill, daily fever, and other symptoms; or (2) if admitted to the hospital, ordinal outcomes for disease severity will be extracted from the hospital's medical records system for the 2 month period of highest acuity. Participants will have a final study visit after hospitalization when cleared for outpatient follow up.

During the first 6 weeks of follow-up post vaccination, all participants will be asked about any adverse events; thereafter, participants will report vaccine-related and solicited adverse events (AE), as well as unsolicited AEs through the electronic survey.

Eligibility criteria: Inclusion Criteria:

* Physicians, physician assistants, nurse practitioners, nurses, medics, respiratory therapists and other HCWs who are likely to care for patients with COVID-19 illness
* Eligible for care in DoD facilities (DEERS eligible)\*
* 18-64 years old
* Willingness to permit review of medical records
* Women of childbearing potential must be willing to use an effective form of birth control for 30 days post vaccination

Exclusion Criteria:

* Previously (medical history) or currently infected or ill with COVID-19
* Previous TB disease
* Fever (\>38 C) within the past 24 hours
* Currently pregnant or breastfeeding or planning on becoming pregnant within 30 days of enrollment
* Current serious underlying medical conditions including: diabetes mellitus, chronic kidney disease, or any other immunocompromising condition:

  * Known infection by Human Immunodeficiency Virus (HIV)
  * History of solid organ or bone marrow transplantation
  * Currently under chemotherapy
  * Currently on any anti-cytokine therapy
  * History of immunodeficiency (including history of anti B cell therapy)
  * Currently taking immunosuppressive drugs
  * Treatment with oral or intravenous steroids, defined as daily doses of 10mg prednisone or equivalent for longer than 3 months
* Active solid or non-solid malignancy or lymphoma within the past two years
* Suspicion of active viral or bacterial infection
* Living with someone HIV+, who is immunocompromised, or is taking an immunosuppressive drug
* Known allergy to (components of) the BCG vaccine or a serious reaction to prior BCG administration
* Plan to terminate their employment at the participating health care facility or change duty stations within the next three months
* Not in possession of a smartphone
* Current participation in a COVID-19 interventional trial

Primary outcomes:
measure: Incidence of symptomatic rt-PCR-confirmed SARS-CoV-2 infection
timeFrame: 6 months
Secondary outcomes:
measure: incidence of Serology-confirmed infection with SARS-CoV-2
timeFrame: 6 months
measure: severity of COVID-19 disease
timeFrame: 6 months
measure: symptomatic respiratory infection
timeFrame: 6 months
measure: effect of prior adult immunization with other vaccines associated with trained immunity
timeFrame: 6 months
Other outcomes:
Locations:
Study officials:
affiliation: Uniformed Services University of the Health Sciences
name: Jeffrey R Livezey, MD
role: PRINCIPAL_INVESTIGATOR
affiliation: Uniformed Services University of the Health Sciences
name: Naomi E Aronson
role: STUDY_CHAIR
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