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CompletedNCT04405999Updated Apr 13, 2022Results posted

Prevention of Infection and Incidence of COVID-19 in Medical Personnel Assisting Patients With New Coronavirus Disease

A Phase 4 interventional study of Bromhexine Hydrochloride in Increased Risk of SARS-CoV-2 Infection, sponsored by Federal State Budgetary Institution, V. A. Almazov Federal North-West Medical Research Centre, of the Ministry of Health. Completed at 1 site in Russian Federation. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2022-04-13.

Sponsored by Federal State Budgetary Institution, V. A. Almazov Federal North-West Medical Research Centre, of the Ministry of Health · Phase 4, Interventional, and Prevention

Phase
Phase 4
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This is a randomized controlled trial of the efficacy and safety evaluation of oral administration of Bromhexine hydrochloride for the prevention of SARS-CoV-2 infection and COVID-19 disease in medical personnel assisting patients with a new coronavirus disease

Read the detailed description

This study aims to evaluate the oral administration of Bromhexine hydrochloride for the prevention of SARS-CoV-2 infection and COVID-19 disease in medical personnel assisting patients with a new coronavirus disease. The aim of the study is to determine the preventive role of this drug in the framework of reducing the incidence of coronavirus infection in risk groups (medical personnel). Several studies show, that the acute respiratory syndrome coronavirus SARS-CoV uses endosomal cysteine proteases cathepsin B and L (CatB/L) and the transmembrane protease serine type 2 (TMPRSS2) for the priming of the viral S-protein. The new coronavirus SARS-CoV-2 penetrates into alveolar epithelial type two cells through a similar mechanism. In detail, viral S-protein binds to pneumocyte angiotensin-converting enzyme 2 (ACE2) and then undergoes cleaving by TMPRSS2 in S1- and S2-subunits. This leads to the release of a fusion peptide, which allows the virus to enter the cell via endocytosis. Therefore, the protease TMPRSS2 can serve as a target for pharmacological agents to prevent the penetration of the SARS-CoV-2 into the cell. Bromhexine blocks the TMPRSS2 ability to activate a zymogen precursor of tissue plasminogen activator in vitro. Interestingly, TMPRSS2 is blocked by much lower concentrations then required to inactivate other proteases in the cell culture. However, these data cannot be simply extended to the clinical practice: whether the concentration of bromhexine in the lung tissue of properly treated patients would be enough to prevent the virus entry through the TMPRSS2-inactivation remains unclear. A randomized study in people at risk for coronavirus infection will clarify the role of Bromhexine hydrochloride as a prevention of this disease.

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Conditions studied

  • Increased Risk of SARS-CoV-2 Infection
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In context

Infections

6,687 studies on the registry are indexed under Infections; 807 are open to participants now.

This study's enrollment of 50 is below the median of 120 across 4,200 interventional studies indexed under Infections.

Browse Infections studies →

Lead sponsor

Federal State Budgetary Institution, V. A. Almazov Federal North-West Medical Research Centre, of the Ministry of Health is the lead sponsor of 30 studies on the registry; 9 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Age of 18 years or more;
  2. Negative test (PCR) for SARS-CoV-2 infection;
  3. The absence of clinical manifestations of a respiratory infection;
  4. Contact with patients with laboratory and / or clinically confirmed SARS-CoV-2 infection;
  5. Signed informed consent to participate in the study.

Exclusion criteria

Exclusion Criteria:

  1. Intolerance to Bromhexine hydrochloride;
  2. Work out of contact with SARS-CoV-2 infection;
  3. Non-compliance with the rules for the use of personal protective equipment when working with SARS-CoV-2 infection (the rules for the use of personal protective equipment in accordance with the recommendations of the Ministry of Health of Russia and the internal orders of the Director General of Almazov NMRC, relevant to the dates of research);
  4. Pregnancy and the period of breastfeeding;
  5. Other circumstances that the researcher considers inappropriate to participate in this study
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Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
50 participants (actual)

Study arms

  • Experimental
    Bromhexine hydrochloride Group

    medical personnel at risk for COVID-19 infection with oral administration of Bromhexine hydrochloride

    Drug: Bromhexine Hydrochloride

  • No intervention
    Control Group

    medical personnel at risk for COVID-19 infection without oral administration of Bromhexine hydrochloride

Interventions

  • DrugBromhexine Hydrochloride

    Medical personnel at risk for COVID-19 infection will receive study medication for 14 days

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What researchers measure

Primary outcomes

  1. Negative Polymerase Chain Reaction (PCR)

    Number of Participants with Negative PCR of SARS-CoV-2 and The Absence of Clinical Manifestations of COVID-19 Infection in individuals taking Bromhexine hydrochloride 4 weeks after randomization.

    Time frame: 4 weeks after randomization

Secondary outcomes

  1. Number of Participants With Asymptomatic SARS-CoV-2 Infection

    Number of Participants with Asymptomatic SARS-CoV-2 Infection

    Time frame: 14 days after last contact

  2. Number of Participants With Mild, Moderate and Severe COVID-19 Disease

    number of participants with mild, moderate and severe COVID-19 disease

    Time frame: 14 days after last contact

  3. Number of Participants With Adverse Events

    Number of Participants with Adverse Events

    Time frame: 14 days after last contact

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Results

Posted Apr 13, 2022

Participant flow

Recruitment was performed via the institution's electronic communication system and via personal contacts with healthcare providers. Following a general notification via an institutional electronic system, one hundred and fifty healthcare providers were contacted personally and 50 persons were included.

Participant flow — Overall Study
MilestoneTreatment GroupControl Group
Started2525
Completed2525
Not completed00

Outcome measures

PrimaryNegative Polymerase Chain Reaction (PCR)

Number of Participants with Negative PCR of SARS-CoV-2 and The Absence of Clinical Manifestations of COVID-19 Infection in individuals taking Bromhexine hydrochloride 4 weeks after randomization.

Time frame:
4 weeks after randomization
Reported as:
Count of participants · Participants
Negative Polymerase Chain Reaction (PCR)
ParticipantsTreatment GroupControl Group
Negative Polymerase Chain Reaction (PCR)27
SecondaryNumber of Participants With Asymptomatic SARS-CoV-2 Infection

Number of Participants with Asymptomatic SARS-CoV-2 Infection

Time frame:
14 days after last contact
Reported as:
Count of participants · Participants
Number of Participants With Asymptomatic SARS-CoV-2 Infection
ParticipantsTreatment GroupControl Group
Number of Participants With Asymptomatic SARS-CoV-2 Infection22
SecondaryNumber of Participants With Mild, Moderate and Severe COVID-19 Disease

number of participants with mild, moderate and severe COVID-19 disease

Time frame:
14 days after last contact
Reported as:
Count of participants · Participants
Number of Participants With Mild, Moderate and Severe COVID-19 Disease
ParticipantsTreatment GroupControl Group
Number of Participants With Mild, Moderate and Severe COVID-19 Disease05
SecondaryNumber of Participants With Adverse Events

Number of Participants with Adverse Events

Time frame:
14 days after last contact
Reported as:
Count of participants · Participants
Number of Participants With Adverse Events
ParticipantsTreatment GroupControl Group
Number of Participants With Adverse Events20

Adverse events

Collected over Adverse event data were collected over 8 weeks.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Bromhexine Hydrochloride Group0/25 (0%)0/25 (0%)2/25 (8%)
Control Group0/25 (0%)0/25 (0%)0/25 (0%)
Most frequent other events
Most frequent other events
EventBromhexine Hydrochloride GroupControl Group
Flash hotSkin and subcutaneous tissue disorders1/250/25
Acute coughRespiratory, thoracic and mediastinal disorders1/250/25

Baseline characteristics

Age, Continuous
Age, Continuous(years)Bromhexine Hydrochloride GroupControl GroupTotal
Mean41.7 ± 6.939.5 ± 8.240.6 ± 7.2
Sex: Female, Male
Sex: Female, Male(Participants)Bromhexine Hydrochloride GroupControl GroupTotal
Female141529
Male111021
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Bromhexine Hydrochloride GroupControl GroupTotal
American Indian or Alaska Native000
Asian000
Native Hawaiian or Other Pacific Islander000
Black or African American000
White252550
More than one race000
Unknown or Not Reported000
Region of Enrollment
Region of Enrollment(participants)Bromhexine Hydrochloride GroupControl GroupTotal
Russia252550
08

Study locations

1 site
  • Almazov National Medical Research Centre
    Saint Petersburg, 197341, Russian Federation
09

References and documents

Publications

  • Mikhaylov EN, Lyubimtseva TA, Vakhrushev AD, Stepanov D, Lebedev DS, Vasilieva EY, Konradi AO, Shlyakhto EV. Bromhexine Hydrochloride Prophylaxis of COVID-19 for Medical Personnel: A Randomized Open-Label Study. Interdiscip Perspect Infect Dis. 2022 Jan 29;2022:4693121. doi: 10.1155/2022/4693121. eCollection 2022. PubMed 35103059 ↗

Study documents

  • Protocol and statistical analysis plan · May 12, 2020

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 13, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04405999
Lead sponsor
Federal State Budgetary Institution, V. A. Almazov Federal North-West Medical Research Centre, of the Ministry of Health
Responsible party
Sponsor
First posted
May 28, 2020
Start date
May 14, 2020
Primary completion
Aug 9, 2020
Completion
Aug 31, 2020
Results posted
Apr 13, 2022
Last update
Apr 13, 2022

Study contacts

Evgeny Mikhaylov, MD, PhD
study director · Almazov National Medical Research Centre

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2022. You cannot join it, but the record below documents what was studied.

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