- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04348370
BCG Vaccine for Health Care Workers as Defense Against COVID 19 (BADAS)
Bacillus Calmette-Guerin Vaccination as Defense Against SARS-CoV-2: A Randomized Controlled Trial to Protect Health Care Workers by Enhanced Trained Immune Responses
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study design: A placebo-controlled adaptive multi-center randomized controlled trial.
Study population: High risk HCW with direct patient contacts, defined as physician assistants, respiratory therapists, nurses, physicians or other HCWs working at emergency rooms, ICUs and in locations within hospitals where COVID-infected patients are treated.
Intervention: Participants will be randomized between intradermal administration of BCG vaccine or placebo in a 1:1 ratio.
Recruitment, Randomization, treatment allocation, and blinding
A standardized, IRB approved email will be sent to department chairs describing the study. A research coordinator will reach out to interested participants via phone with the help of an IRB-approved verbal script to introduce the study, confirm eligibility and provide further instructions on how to access and sign the IRB-approved ICD via REDCap using their own electronic devices. It is important that the investigators obtain the consent via REDCAp to a) avoid direct person-to-person contact and comply with social distancing imposed recommendations, and b) minimize the waste of reconstituted BCG by allowing the research personnel to schedule vaccinations in a controlled fashion. Patient registration into the trial will happen immediately after consent has been provided and will involve entering of baseline information into an electronic data capture system (RedCap).
Once the eligibility is confirmed and the ICD signed by the participant and stored in REDCap, the research coordinator will randomize the participant and communicate the treatment assignment to the nurse administering the vaccination. The nurse will subsequently assign an appointment and communicate date and time of vaccination with the participant. All eligible participants will receive intradermal injections of BCG:placebo in a 1:1 ratio.
Both, participants and investigators will be blinded to the treatment assignments during the study. However, in case of an emergency where it is important to know the treatment received, the investigator and/or participant can reach out to the unblinded study personnel who will provide the unblinded data. All participants will receive their treatment allocation at the end of the study, after the data analysis is finalized.
Unblinded personnel will not be involved in the collection and analysis of study data other than the baseline eligibility criteria.
The end of the study is defined as the last patient's last entry in the electronic data capture system.
Informed Consent and Eligibility
The following types of procedures will be conducted as indicated below:
Medical history will be obtained from patient medical record/clinical chart. Informed Consent will be obtained to access these records. When information cannot be obtained or is not available from the patient medical record/clinical chart, it will be obtained via patient interview. Physical examination will be conducted solely to look for existing BCG vaccination scars.
Symptom evaluation will be conducted via an electronic survey administered to participants every 1-3 days.
HIV and pregnancy will be collected as self-reported information. If unknown, a urine pregnancy test will be performed.
Nasopharyngeal, oral and/ or rectal swabs will be collected for rt-PCR test for SARS-CoV2 infection if a study develops symptoms consistent with Covid-19.
If a participant does not know their PPD/IGRA status from within the last 24 months (all health care providers should have this information), an IGRA can be performed to evaluate eligibility.
Study participants have the option of donating blood via phlebotomy (for serological test for Covid-19 disease and PBMCs for immune correlates) or providing a fingerstick and dried blood spot (for serologic test for Covid-19).
Data will be collected at four time points/periods: (1) after consent, (2) at baseline, (3) during follow-up period, and (4) at study end.
Data to be collected during screening includes medical history, physical exam results, results of rt-PCR and serological test results.
Data to be collected during baseline enrollment includes eligibility confirmation, demographic information, risk factors, randomization assignment, confirmation of BCG vaccination/placebo, any immediate reactions to BCG vaccination/placebo.
Data to be collected during follow-up includes intermittent surveys about the presence of flu-like symptoms, rt-PCR test results if done, serological test results, if testing positive for Covid-19 information regarding their disease course, and disease outcome status.
THE FOLLOWING IS COLLECTED AFTER CONSENT IS OBTAINED:
Date of signed Informed Consent Form
Role in hospital
Department in hospital
rt-PCR test for SARS-CoV2 result
Serological test for Covid-19 result
Number of BCG scars (by visual/physical examination)
Medical history*
Previous PPD and IGRA test results
History of TB disease
History of previous HIV testing
Urine Pregnancy test result (if applicable)
Plans of pregnancy in 30 days
Plan to stop working in 3 months/ leave facility in 6 months
Current diabetes mellitus
Current chronic kidney disease
Currently taking immunosuppressive drugs
Living with someone with HIV, immunocompromised, taking immunosuppressive drug
Chemotherapy in past 3 months
History of organ/bone marrow transplant
Access to smartphone
BASELINE DATA COLLECTION/PROCEDURES
The following procedures will be conducted and data collected as indicated below:
A questionnaire to obtain information about age, sex, demographic information, who they live with, smoking status, any current medications they are on, and other comorbidities
Participants will then be randomized to either receive a single dose of BCG vaccination or placebo.
BCG vaccination or placebo will be administered.
Eligibility screening data will carry forward into the trial.
The following additional data points will be collected:
Age
Sex
Race
Ethnicity
Nationality
Who they live with
Height
Weight
Smoking status/tobacco use
Alcohol use
Current list of medications
Current list of comorbidities
History of diabetes mellitus
History of hypertension
History of stroke
History of kidney disease
History of COPD
Randomization assignment
BCG/placebo administered
FOLLOW-UP PROCEDURES AND DATA COLLECTION:
Participants will be followed to assess whether they get infected with SARS-CoV2:
Participants will complete intermittent surveys via an electronic system every 1-3 days to assess the presence of any flu-like symptom, including sore throat, fever, headache, malaise, and cough. Note that this is part of routine surveillance for Covid-19 in health workers at the United States site. Consent forms will ask for consent to access this survey information.
Any positive response on the survey will trigger a nasopharyngeal, oral and/ or rectal swab to be collected to test for Covid-19 via rt-PCR
All participants, regardless of survey responses, will have serology for Covid-19 tested at 4 week intervals during the follow-up period (6 months)
If a participant completes the follow-up period and does not test positive for disease, their study participation is complete
If a participant does test positive for disease, their disease status will be ascertained for up to two months or until an outcome is available through one of the following mechanisms: (1) an electronic survey if they are not admitted to the hospital, including questions about the number of days they are ill, daily fever, and other symptoms; or (2) (2) if they are admitted to the hospital, ordinal outcomes for disease severity will be extracted from the hospital¿s electronic medical records system.
During the first week of follow-up, all participants will actively be asked about any adverse events; thereafter, participants will report unsolicited AEs through the electronic survey. Vaccine related adverse events will be graded using the FDA guidance (https://www.fda.gov/media/73679/download) and noted using WHO-recommended Adverse event following Immunization forms (AEFI; https://vaccine-safety-training.org/classification-of-aefis.html).
Participants will have the option of donating 12 mL of blood for plasma (serology) and PBMCs for secondary analysis of immune correlates and for future analysis based on covid19-specific IgM and IgG. If they do not donate 12mL of blood, a fingerstick will be required for baseline COVID19 serology.
Dried Blood Spot (DBS): all participants are HCWs and will self-collect DBS samples at week 4, 8, 12, 16, 20 and 24. Envelopes to store the DBS are provided upon enrollment and can be dropped off at work and picked up by study coordinators to minimize HCW distractions.
COVID specific RNA is found in stool for ~21 days when an individual develops infection (https://doi.org/10.1038/s41586-020-2196-x). Participants will have the option of collecting stool swabs monthly if they are asymptomatic or weekly if they develop symptoms. Nucleic acid testing will be performed in retrospect to support secondary objectives.
If participants develop symptoms consistent with COVD19, will be PCR tested for COVID19. They will be given the option of donating 12 mL of blood for plasma and PBMCs 2 weeks after symptoms resolve.
Week 12 (+/- 2 Weeks), participants will be given the option to donate 12 mL of blood for plasma and PBMCs for secondary analysis of immune correlates and for future secondary analysis based on covid-specific IgM and IgG.
Week 24 (+/- 2 Weeks), participants will be given the option to donate 12 mL of blood for plasma and
PBMCs for secondary analysis of immune correlates and for future secondary analysis based on covid-specific IgM and IgG.
Except for the administration of BCG vaccine or placebo and the above mentioned DBS and phlebotomy, participants will undergo no invasive procedures for study purposes.
The following data points will be collected during the follow-up period AND AT
END OF STUDY TIMEPOINT:
Sore throat (collected at multiple time points)
Fever (collected at multiple time points)
Headache (collected at multiple time points)
Malaise (collected at multiple time points)
Cough (collected at multiple time points)
rt-PCR test for SARS-CoV2 result (as indicated)
Serological test for Covid-19 result (every 2 weeks)
Number of days ill
Daily fever
Other Covid-19 symptoms
Admitted to hospital
Required oxygen
Treated in intensive care
Required ventilation
Death
Severe pneumonia
Respiratory failure
Acute respiratory distress syndrome
Sepsis
Septic shock
*Already being collected as part of routine surveillance of health care workers. Will request access to this information in Informed Consent Form.
Subjects can leave the study at any time for any reason if they wish to do so without any consequences. The investigator can decide to withdraw a subject from the study for urgent medical reasons. Participants who received placebo will be unblinded at the end of the study and pending a recommendation by the DSMB, they will be offered the option of receiving the BCG intervention.
A participant will only be replaced in case of withdrawal before the administration of BCG vaccine/placebo.
Study Type
Enrollment (Anticipated)
Phase
- Phase 4
Contacts and Locations
Study Locations
-
-
California
-
Los Angeles, California, United States, 90048
- Cedars-Sinai Medical Center
-
-
Texas
-
Bryan, Texas, United States, 77802
- Texas A&M Family Care Clinic
-
Houston, Texas, United States, 77030
- MD Anderson Cancer Center
-
Houston, Texas, United States, 77030
- Baylor College of Medicine
-
Houston, Texas, United States, 77030
- Baylor St. Luke's Medical Center
-
Houston, Texas, United States, 77030
- Harris Health System - Ben Taub Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Adult (≥18 years)
- Male or female
- Hospital personnel taking care for patients with known or suspected SARS-CoV-2 infection and providing, on average, at least 25 hours per week of direct patient care
Exclusion Criteria:
- Known allergy to (components of) the BCG vaccine or serious adverse events to prior BCG administration
- Known active or latent Mycobacterium tuberculosis or with another mycobacterial species. A history with- or a suspicion of M. tuberculosis infection.
- Fever (>38 C) within the past 24 hours
- Age > 75 years
- Pregnancy or planning pregnancy within 30 days of study enrollment
- Breastfeeding
- Suspicion of active viral or bacterial infection
- Any Immunocompromised subjects. This exclusion category comprises: a) subjects with known infection by the human immunodeficiency virus (HIV-1); b) subjects with known neutropenic with less than 1500 neutrophils/mm3; c) subjects with solid organ transplantation; d) subjects with bone marrow transplantation; e) subjects under chemotherapy; f) subjects with primary immunodeficiency; g) known severe lymphopenia with less than 400 lymphocytes/mm3; h) treatment with any anti-cytokine therapies. i) treatment with oral or intravenous steroids defined as daily doses of 10mg prednisone or equivalent for longer than 3 months
- Living with someone who is immunosuppressed or taking immunosuppressive drugs
- Previous documented infection with COVID19
- Active solid or non-solid malignancy or lymphoma within the prior two years
- Direct involvement in the design or the execution of the study
- Expected absence from work of ≥4 of the following 12 weeks due to any reason (holidays, maternity leave, retirement, planned surgery etc)
- Not in possession of a smartphone
- Inability to keep the vaccine site covered in the case of a draining pustule.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: BCG Group
FDA-approved BCG Tice strain, procured from Merck, will be used.
The vaccine will be reconstituted according to the package insert.
In brief, a vial containing ~1x10^8 CFU of lyophilized BCG will be reconstituted in 50 mL of saline.
A single dose will consist of 0.1 mL (~2x10^5 CFU) will be administered by slow intradermal injection using a 25 gauge/ 0.5 mm syringe in the deltoid area.
|
BCG vaccine will be administered by research nurses.
Participants and investigators will be blinded.
|
Placebo Comparator: Placebo Group
A single dose will consist of 0.1 mL saline
|
Placebo vaccine will be administered by research nurses.
Participants and investigators will be blinded.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Incidence of COVID 19 Infection
Time Frame: 6 months
|
The primary outcome measure is the development of COVID19 infection.
We will use the Cox proportional-hazards model to calculate hazard ratios for the development of Covid-19.
This will be reported as the proportion of individuals receiving the intervention who are PCR-positive or seroconvert.
defined as number of new cases during the 6 month time period
|
6 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Disease Severity
Time Frame: up to 6 months
|
The secondary outcome measure is disease severity calculated using the Covid Severity Scale Scoring of 0 -10.
A score of 10 is worse and a score of 0 is best.
Disease severity score will be based on the level of care required for individuals who test positive for COVID19 as follows: non-hospital-based care; patient hospitalized but no oxygen required; hospitalized and oxygen required; patient treated in intensive care and/or on mechanical ventilation; patient died.
Additional WHO criteria for severity include severe pneumonia, respiratory failure, acute respiratory distress syndrome, sepsis and septic shock.
|
up to 6 months
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Jeffrey D Cirillo, PhD, Texas A&M University
- Principal Investigator: Andrew DiNardo, MD, Baylor College of Medicine
- Principal Investigator: Ashish M Kamat, MD, M.D. Anderson Cancer Center
- Principal Investigator: Moshe Arditi, MD, Cedars-Sinai Medical Center
Publications and helpful links
General Publications
- Huang C, Wang Y, Li X, Ren L, Zhao J, Hu Y, Zhang L, Fan G, Xu J, Gu X, Cheng Z, Yu T, Xia J, Wei Y, Wu W, Xie X, Yin W, Li H, Liu M, Xiao Y, Gao H, Guo L, Xie J, Wang G, Jiang R, Gao Z, Jin Q, Wang J, Cao B. Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China. Lancet. 2020 Feb 15;395(10223):497-506. doi: 10.1016/S0140-6736(20)30183-5. Epub 2020 Jan 24. Erratum In: Lancet. 2020 Jan 30;:
- Arts RJW, Moorlag SJCFM, Novakovic B, Li Y, Wang SY, Oosting M, Kumar V, Xavier RJ, Wijmenga C, Joosten LAB, Reusken CBEM, Benn CS, Aaby P, Koopmans MP, Stunnenberg HG, van Crevel R, Netea MG. BCG Vaccination Protects against Experimental Viral Infection in Humans through the Induction of Cytokines Associated with Trained Immunity. Cell Host Microbe. 2018 Jan 10;23(1):89-100.e5. doi: 10.1016/j.chom.2017.12.010.
- Nemes E, Geldenhuys H, Rozot V, Rutkowski KT, Ratangee F, Bilek N, Mabwe S, Makhethe L, Erasmus M, Toefy A, Mulenga H, Hanekom WA, Self SG, Bekker LG, Ryall R, Gurunathan S, DiazGranados CA, Andersen P, Kromann I, Evans T, Ellis RD, Landry B, Hokey DA, Hopkins R, Ginsberg AM, Scriba TJ, Hatherill M; C-040-404 Study Team. Prevention of M. tuberculosis Infection with H4:IC31 Vaccine or BCG Revaccination. N Engl J Med. 2018 Jul 12;379(2):138-149. doi: 10.1056/NEJMoa1714021.
- Wardhana, Datau EA, Sultana A, Mandang VV, Jim E. The efficacy of Bacillus Calmette-Guerin vaccinations for the prevention of acute upper respiratory tract infection in the elderly. Acta Med Indones. 2011 Jul;43(3):185-90.
- Hatherill M, Geldenhuys H, Pienaar B, Suliman S, Chheng P, Debanne SM, Hoft DF, Boom WH, Hanekom WA, Johnson JL. Safety and reactogenicity of BCG revaccination with isoniazid pretreatment in TST positive adults. Vaccine. 2014 Jun 30;32(31):3982-8. doi: 10.1016/j.vaccine.2014.04.084. Epub 2014 May 9.
- Kleinnijenhuis J, Quintin J, Preijers F, Joosten LA, Ifrim DC, Saeed S, Jacobs C, van Loenhout J, de Jong D, Stunnenberg HG, Xavier RJ, van der Meer JW, van Crevel R, Netea MG. Bacille Calmette-Guerin induces NOD2-dependent nonspecific protection from reinfection via epigenetic reprogramming of monocytes. Proc Natl Acad Sci U S A. 2012 Oct 23;109(43):17537-42. doi: 10.1073/pnas.1202870109. Epub 2012 Sep 17.
- Biering-Sorensen S, Aaby P, Napirna BM, Roth A, Ravn H, Rodrigues A, Whittle H, Benn CS. Small randomized trial among low-birth-weight children receiving bacillus Calmette-Guerin vaccination at first health center contact. Pediatr Infect Dis J. 2012 Mar;31(3):306-8. doi: 10.1097/INF.0b013e3182458289.
- Kristensen I, Aaby P, Jensen H. Routine vaccinations and child survival: follow up study in Guinea-Bissau, West Africa. BMJ. 2000 Dec 9;321(7274):1435-8. doi: 10.1136/bmj.321.7274.1435.
- Aaby P, Roth A, Ravn H, Napirna BM, Rodrigues A, Lisse IM, Stensballe L, Diness BR, Lausch KR, Lund N, Biering-Sorensen S, Whittle H, Benn CS. Randomized trial of BCG vaccination at birth to low-birth-weight children: beneficial nonspecific effects in the neonatal period? J Infect Dis. 2011 Jul 15;204(2):245-52. doi: 10.1093/infdis/jir240.
- Netea MG, Joosten LA, Latz E, Mills KH, Natoli G, Stunnenberg HG, O'Neill LA, Xavier RJ. Trained immunity: A program of innate immune memory in health and disease. Science. 2016 Apr 22;352(6284):aaf1098. doi: 10.1126/science.aaf1098. Epub 2016 Apr 21.
- Spencer JC, Ganguly R, Waldman RH. Nonspecific protection of mice against influenza virus infection by local or systemic immunization with Bacille Calmette-Guerin. J Infect Dis. 1977 Aug;136(2):171-5. doi: 10.1093/infdis/136.2.171.
- Benn CS, Netea MG, Selin LK, Aaby P. A small jab - a big effect: nonspecific immunomodulation by vaccines. Trends Immunol. 2013 Sep;34(9):431-9. doi: 10.1016/j.it.2013.04.004. Epub 2013 May 14.
- Kleinnijenhuis J, Quintin J, Preijers F, Benn CS, Joosten LA, Jacobs C, van Loenhout J, Xavier RJ, Aaby P, van der Meer JW, van Crevel R, Netea MG. Long-lasting effects of BCG vaccination on both heterologous Th1/Th17 responses and innate trained immunity. J Innate Immun. 2014;6(2):152-8. doi: 10.1159/000355628. Epub 2013 Oct 30.
- Chang D, Xu H, Rebaza A, Sharma L, Dela Cruz CS. Protecting health-care workers from subclinical coronavirus infection. Lancet Respir Med. 2020 Mar;8(3):e13. doi: 10.1016/S2213-2600(20)30066-7. Epub 2020 Feb 13. No abstract available.
- Zhang J, Zhou L, Yang Y, Peng W, Wang W, Chen X. Therapeutic and triage strategies for 2019 novel coronavirus disease in fever clinics. Lancet Respir Med. 2020 Mar;8(3):e11-e12. doi: 10.1016/S2213-2600(20)30071-0. Epub 2020 Feb 13. No abstract available.
- Han RF, Pan JG. Can intravesical bacillus Calmette-Guerin reduce recurrence in patients with superficial bladder cancer? A meta-analysis of randomized trials. Urology. 2006 Jun;67(6):1216-23. doi: 10.1016/j.urology.2005.12.014.
- Leentjens J, Kox M, Stokman R, Gerretsen J, Diavatopoulos DA, van Crevel R, Rimmelzwaan GF, Pickkers P, Netea MG. BCG Vaccination Enhances the Immunogenicity of Subsequent Influenza Vaccination in Healthy Volunteers: A Randomized, Placebo-Controlled Pilot Study. J Infect Dis. 2015 Dec 15;212(12):1930-8. doi: 10.1093/infdis/jiv332. Epub 2015 Jun 12.
- Arts RJ, Blok BA, Aaby P, Joosten LA, de Jong D, van der Meer JW, Benn CS, van Crevel R, Netea MG. Long-term in vitro and in vivo effects of gamma-irradiated BCG on innate and adaptive immunity. J Leukoc Biol. 2015 Dec;98(6):995-1001. doi: 10.1189/jlb.4MA0215-059R. Epub 2015 Jun 16.
- Cheng SC, Quintin J, Cramer RA, Shepardson KM, Saeed S, Kumar V, Giamarellos-Bourboulis EJ, Martens JH, Rao NA, Aghajanirefah A, Manjeri GR, Li Y, Ifrim DC, Arts RJ, van der Veer BM, Deen PM, Logie C, O'Neill LA, Willems P, van de Veerdonk FL, van der Meer JW, Ng A, Joosten LA, Wijmenga C, Stunnenberg HG, Xavier RJ, Netea MG. mTOR- and HIF-1alpha-mediated aerobic glycolysis as metabolic basis for trained immunity. Science. 2014 Sep 26;345(6204):1250684. doi: 10.1126/science.1250684. Erratum In: Science. 2014 Nov 7;346(6210):aaa1503. van der Meer, Brian M J W [corrected to van der Veer, Brian M J W].
- Shivayogi P. Vulnerable population and methods for their safeguard. Perspect Clin Res. 2013 Jan;4(1):53-7. doi: 10.4103/2229-3485.106389. No abstract available.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2020-0432F
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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