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CompletedNCT04321096CamoCO-19Updated Apr 18, 2025

The Impact of Camostat Mesilate on COVID-19 Infection

A Phase 1/2 interventional study of Camostat Mesilate and Placebo oral tablet in Corona Virus Infection, sponsored by University of Aarhus. Completed at 11 sites in 2 countries. Open to participants aged 18 Years to 110 Years. Per ClinicalTrials.gov, last updated 2025-04-18.

Sponsored by University of Aarhus · Phase 1/2, Interventional, and Treatment

Phase
Phase 1/2
Study type
Interventional
Enrollment
206
Allocation
Randomized
Ages
18 Years to 110 Years
Sex
All
01

Study summary

SARS-CoV-2, one of a family of human coronaviruses, was initially identified in December 2019 in Wuhan city. This new coronavirus causes a disease presentation which has now been named COVID-19. The virus has subsequently spread throughout the world and was declared a pandemic by the World Health Organisation on 11th March 2020. As of 18 March 2020, there are 198,193 number of confirmed cases with an estimated case-fatality of 3%. There is no approved therapy for COVID-19 and the current standard of care is supportive treatment.

SARS-CoV-2 exploits the cell entry receptor protein angiotensin converting enzyme II (ACE-2) to access and infect human cells. The interaction between ACE2 and the spike protein is not in the active site. This process requires the serine protease TMPRSS2. Camostat Mesilate is a potent serine protease inhibitor. Utilizing research on severe acute respiratory syndrome coronavirus (SARS-CoV) and the closely related SARS-CoV-2 cell entry mechanism, it has been demonstrated that SARS-CoV-2 cellular entry can be blocked by camostat mesilate. In mice, camostat mesilate dosed at concentrations similar to the clinically achievable concentration in humans reduced mortality following SARS-CoV infection from 100% to 30-35%.

Read the detailed description

Cohort 1 - enrolment into the cohort of hospitalized patients has been completed (31 Dec 2020). Study results are publicly available at EClinicilMedicine, see link https://www.thelancet.com/journals/eclinm/article/PIIS2589-5370(21)00129-2/fulltext Cohort 2 - outpatients - remains open for enrolment

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Conditions studied

  • Corona Virus Infection

Keywords

  • COVID-19
  • SARS-CoV-2
03

In context

Infections

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

This study's enrollment of 206 is above the median of 120 across 4,201 interventional studies indexed under Infections.

Browse Infections studies →

Lead sponsor

University of Aarhus is the lead sponsor of 1,274 studies on the registry; 183 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 to 110 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Cohort 1)

  • Documented COVID-19 infection as evidenced by positive PCR (or comparable clinical assay) for SARS-CoV-2
  • Less than 48 hours since time of hospital admission OR if hospital-acquired COVID-19 is suspected, less than 48 hrs since onset of symptoms
  • Adolescents and adults age >=18 years
  • Subject or legally authorized representative able to give informed consent
  • Admitted to hospital

Cohort 2)

  • Documented COVID-19 infection as evidenced by positive PCR (or comparable clinical assay) for SARS-CoV-2
  • One or more of the following symptoms of COVID-19 infection: fever, cough, expectoration, shortness of breath, myalgia, fatigue, or head ache
  • No more than 5 days since the beginning of symptom onset
  • Adolescents and adults age >=18 years
  • Subject (or legally authorized representative, for Cohort 1 only) able to give informed consent
  • Do not require immediate hospitalization (newly diagnosed COVID-19 patients who are discharged within 24 hrs of hospital admission are eligible for enrollment)
  • Must be willing to fill out a daily symptom diary
  • Must be available for a daily phone call
  • Must be willing to take their own temperature at least once a day

Exclusion criteria

  • Any condition that, in the Investigator's opinion, will prevent adequate compliance with study therapy (e.g. the patient is considered to be moribund within the next 72 hrs or has uncontrolled substance abuse that prevents adherence to study medication). Patients needing ventilator treatment are eligible to be enrolled if they fulfill the other in/exclusion criteria.
  • The following laboratory values at baseline (Day 0):

    • Serum total bilirubin ≥3 ULN
    • Estimated glomerular filtration rate (eGFR) ≤30 mL/min (based on serum creatinine)
  • Known hypersensitivity to Camostat Mesilate
  • Women who are pregnant or breastfeeding, or with a positive pregnancy test as determined by a positive urine or blood beta- human chorionic gonadotropin test during screening or women of child bearing potential* who are unwilling or unable to use an acceptable method of contraception (combined estrogen and progestogen hormonal contraception (oral, intravaginal or transdermal), progesteron-only hormonal contraception (oral, injectable or implantable), intrauterine device or intrauterine hormone-releasing system) to avoid pregnancy during the study. Sexual abstinence will only be accepted in cases where this reflect the usual lifestyle.
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Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
206 participants (actual)

Study arms

  • Placebo comparator
    Placebo

    2 pills 3 times daily for 5 days

    Drug: Placebo oral tablet

  • Experimental
    Camostat Mesilate

    2x100 mg pills 3 times daily for 5 days

    Drug: Camostat Mesilate

Interventions

  • DrugCamostat Mesilate

    Serine protease inhibitor that blocks TMPRSS-2 mediated cell entry of SARS-CoV-2

    Also known as: Foipan

  • DrugPlacebo oral tablet

    Placebo

    Also known as: Placebo

06

What researchers measure

Primary outcomes

  1. Cohort 1: Days to clinical improvement from study enrolment

    Clinical improvement defined as live hospital discharge OR a 2 point improvement (from time of enrolment) in disease severity rating on the 7-point ordinal scale

    Time frame: 30 days

  2. Cohort 2: Days to clinical improvement from study enrolment

    Days to clinical improvement from study enrolment defined no fever for at least 48 hrs AND improvement in other symptoms (e.g. cough, expectoration, myalgia, fatigue, or head ache)

    Time frame: 30 days

Secondary outcomes

  1. Safety evaluation, as measured by AEs, Adverse Reactions (ARs), SAEs, Serious ARs (SARs)

    Time frame: 30 days

  2. Cohort 1: Clinical status as assessed by the 7-point ordinal scale at day 7, 14 and 30

    The ordinal scale is an assessment of the clinical status at the first assessment of a given study day. The scale is as follows: 1) Death; 2) Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO); 3) Hospitalized, on non-invasive ventilation or high flow oxygen devices; 4) Hospitalized, requiring supplemental oxygen; 5) Hospitalized, not requiring supplemental oxygen; 6) Not hospitalized, limitation on activities; 7) Not hospitalized, no limitations on activities.

    Time frame: 30 days

  3. Cohort 1: Day 30 mortality

    Mortality

    Time frame: 30 days

  4. Cohort 1: Change in NEW(2) score from baseline to day 30

    NEWS2

    Time frame: 30 days

  5. Cohort 1: Admission to ICU

    ICU

    Time frame: 30 days

  6. Cohort 1: Use of invasive mechanical ventilation or ECMO

    invasive mechanical ventilation or ECMO

    Time frame: 30 days

  7. Cohort 1: Duration of supplemental oxygen (days)

    Nasal or high-flow oxygen

    Time frame: 30 days

  8. Cohort 1+2: Days to self-reported recovery (e.g. limitations in daily life activities) during telephone interviews conducted at day 30

    Subjective clinical improvement

    Time frame: 30 days

  9. Cohort 2: Number participant-reported secondary infection of housemates

    No of new COVID-19 infections in the household

    Time frame: 30 days

  10. Cohort 2: Time to hospital admission related to COVID-19 infection

    Hospital admission

    Time frame: 30 days

07

Study locations

11 sites
  • Region Hospital North Jutland
    Hjørring, Region Nord, Denmark
  • Department of Infectious Diseases
    Aalborg, Denmark
  • Department for Infectious Diseases, Aarhus University Hospital
    Aarhus N, 8200, Denmark
  • Herning Regional Hospital
    Herning, 7400, Denmark
  • Northzealands hospital - Hillerød
    Hillerød, 3400, Denmark
  • Horsens Regional Hospital
    Horsens, 8700, Denmark
  • Bispebjerg hospital
    København, 2400, Denmark
  • Dept. of Infectious Diseases, Odense University Hospital
    Odense, 5000, Denmark
  • Randers Regional Hospital
    Randers, 8900, Denmark
  • Silkeborg Hospital
    Silkeborg, 8600, Denmark
  • Örebro Hsopital
    Örebro, Örebrolan, Sweden
08

References and documents

Publications

  • Gunst JD, Staerke NB, Pahus MH, Kristensen LH, Bodilsen J, Lohse N, Dalgaard LS, Bronnum D, Frobert O, Honge B, Johansen IS, Monrad I, Erikstrup C, Rosendal R, Vilstrup E, Mariager T, Bove DG, Offersen R, Shakar S, Cajander S, Jorgensen NP, Sritharan SS, Breining P, Jespersen S, Mortensen KL, Jensen ML, Kolte L, Frattari GS, Larsen CS, Storgaard M, Nielsen LP, Tolstrup M, Saedder EA, Ostergaard LJ, Ngo HTT, Jensen MH, Hojen JF, Kjolby M, Sogaard OS. Efficacy of the TMPRSS2 inhibitor camostat mesilate in patients hospitalized with Covid-19-a double-blind randomized controlled trial. EClinicalMedicine. 2021 May;35:100849. doi: 10.1016/j.eclinm.2021.100849. Epub 2021 Apr 22. PubMed 33903855 ↗

Individual participant data

Plan to share: Yes — Data sharing plan: Individual deidentified participant data (including data dictionaries) will be shared following the publication of the primary and secondary endpoints as outlined in this protocol. Data to be shared includes deidentified data points in published, peer-reviewed articles. Additional, related documents will also be available (study protocol, informed consent form, statistical analysis plan). Data will become available following publication with no planned end date.

Supporting information: Study protocol, Sap, Icf

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 18, 2025, 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
NCT04321096
Lead sponsor
University of Aarhus
Responsible party
Sponsor
First posted
Mar 25, 2020
Start date
Apr 4, 2020
Primary completion
Jan 31, 2022
Completion
May 1, 2023
Last update
Apr 18, 2025

Study contacts

Lars Østergaard, Professor
study chair · Head of Department

Oversight

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

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