ClinicalTrials.gg
CompletedNCT04834856Updated Sep 8, 2021

Viral Clearance, PK and Tolerability of Ensovibep in COVID-19 Patients

A Phase 2 interventional study of ensovibep in Covid19, sponsored by Molecular Partners AG. Completed at 1 site in Netherlands. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2021-09-08.

Sponsored by Molecular Partners AG · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
12
Allocation
Non-randomized
Ages
18 Years to 70 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 104 studies in COVID-19 with a site in Netherlands — 7 open to participants now, 11 under way, 3 of them phase 3. COVID-19 · Netherlands.

Enrollment
49th of 50
12 · median 221
Started
2021
with 27 others
Phase 2
8 of 104
none open now
Registered
60th of 104
by date

Among the 104 studies in COVID-19 with a site in Netherlands, this one is the 49th largest by enrollment of the 50 interventional ones that give a count, is one of 28 that started in 2021, is one of 8 in phase 2, and was the 60th registered.

COVID-19

7,990 studies on the registry are indexed under COVID-19; 466 are open to participants now.

Browse COVID-19 studies →

Open to participants now

7 of the 104 studies in COVID-19 with a site in Netherlands are open now. Recruiting first, the newest first:

2 more — sign in →

All 7 open studies →

A study can be open while its sites in Netherlands have not opened yet or have stopped. Only those recruiting at a site in Netherlands →

Who these studies take

Of the 356 COVID-19 studies recruiting now, 207 (58%) set no upper age limit and 83 (23%) stop at 75 or younger; 91 take children under 18; 136 take healthy volunteers.

This study: 18 Years to 70 Years · all sexes · no healthy volunteers.

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02

Study summary

This study will investigate how ensovibep is distributed throughout the body, the viral clearance and the tolerability of ensovibep in patients with symptomatic COVID-19 disease

03

Conditions studied

  • Covid19

Browse trials for

Keywords

  • SARS-CoV-2
  • Corona
  • DARPin
04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Men or non-pregnant women, between 18 and 70 years on the day of inclusion.
  • Presence of one or more mild or moderate COVID-19 symptoms: Fever, cough, sore throat, malaise, fatigue, headache, muscle pain, gastrointestinal symptoms, or shortness of breath with exertion.
  • Positive test for SARS-CoV-2 in upper respiratory swab on the day of dosing (rapid antigen test).

Exclusion criteria

Exclusion Criteria:

  • Requiring hospitalization at time of screening, or at time of study drug administration.
  • Oxygen saturation (SpO2) ≤ 93 percent (%) on room air at sea level, respiratory rate ≥ 30 per minute, or heart rate ≥125 per minute.
  • Any serious concomitant systemic disease, condition, or disorder that, in the opinion of the investigator, should preclude participation in this study.
  • Any co-morbidity requiring hospitalization or surgery within \<7 days, or that is considered life-threatening within 29 days.
  • A patient reported history (prior to the current episode) of a positive SARS-CoV-2 serology test or a history of PCR confirmed SARS-CoV-2 infection.
  • Prior or concurrent use of SARS-CoV-2 antiviral medication, including convalescent serum or anti-viral antibodies.
  • Concurrent enrollment in any other type of medical research for improving COVID-19 outcomes or that is judged by the investigator not to be scientifically or medically compatible with this study.
  • Women that are currently breast feeding, pregnant, or plan to get pregnant during the duration of the trial.
  • Severe status (primary immunodeficiency, supraphysiological dose of systemic , transplant patients, known untreated and CD4 T-cells \<200/microliter) or use of any immunosuppressants that, in the opinion of the investigator, should preclude participation in this study.
  • Subjects at high risk for of COVID-19 related complications or mortality
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
12 participants (actual)

Study arms

  • Experimental
    ensovibep dose 1

    Drug: ensovibep

  • Experimental
    ensovibep dose 2

    Drug: ensovibep

Interventions

  • The study will start with a low-dose cohort and after a safety review escalate to the higher dose cohort. One administration at day 1 by infusion.

    Also known as: MP0420

06

What researchers measure

Primary outcomes

  1. SARS-CoV-2 viral load

    Changes from baseline to each time point of measurement in SARS-CoV-2 viral load in nasopharyngeal swabs

    Time frame: up to day 29

  2. SARS-CoV-2 viral cultures

    Changes from baseline to each time point of measurement in SARS-CoV-2 viral cultures cultivated from nasopharyngeal swabs

    Time frame: up to day 29

  3. SARS-CoV-2 PCR days to negativity

    Duration in days to SARS-CoV-2 PCR negativity

    Time frame: up to day 29

  4. Observed maximum concentration (Cmax)

    The maximum observed concentration (Cmax) is estimated based on the serum concentrations.

    Time frame: up to day 91

  5. Terminal Elimination Half-Life (T½)

    Time frame: up to day 91

  6. Time to Cmax (Tmax)

    Time frame: up to day 91

  7. The area under the concentration-time curve from time zero extrapolated to infinity time (AUCinf)

    Time frame: up to day 91

  8. The area under the concentration-time curve from time zero to the time of the last quantifiable concentration (AUClast)

    Time frame: up to day 91

  9. Apparent total body clearance of the drug from plasma (CL)

    Time frame: up to day 91

  10. Apparent volume of distribution at steady state (Vss)

    Time frame: up to day 91

Secondary outcomes

  1. 14 Common Covid-19 Related Symptoms score

    Changes in the assessment of 14 Common Covid-19 Related Symptoms score

    Time frame: up to day 29

  2. Treatment-emergent (serious) adverse events ((S)AEs) and AEs of Special Interest (AESIs) including Infusion-related reactions (IRRs)

    Treatment-emergent (S)AEs and AESIs, including infusion-related reactions (IRRs) will be assessed throughout the study

    Time frame: up to day 91

  3. Concomitant medication

    Intake of concomitant medication will be assessed throughout the study

    Time frame: up to day 91

  4. Vital Signs: Heart Rate (bpm)

    Time frame: up to day 91

  5. Vital Signs: Blood Pressure Systolic and Diastolic (mmHg)

    Time frame: up to day 91

  6. Vital Signs: Respiratory Rate (breaths per minute)

    Time frame: up to day 91

  7. Vital Signs: Body Temperature (°C)

    Time frame: up to day 91

  8. Vital Signs: Oxygen Saturation (SpO2)

    Time frame: up to day 91

  9. Clinical laboratory tests (hematology and blood chemistry)

    Time frame: up to day 91

  10. Physical examinations (symptom directed)

    Time frame: up to day 91

  11. Local tolerability at injection site

    Local tolerability at injection site will be assessed via Visual Infusion Phlebitis score

    Time frame: up to 90 min post dose

07

Study locations

1 site
  • Centre for Human Drug Research
    Leiden, 2333, Netherlands
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Apr 2021 to primary completion in Aug 2021, 4 months.

Of 223 industry-sponsored phase 2 interventional studies under COVID-19, half reached primary completion within 8 months of starting (the median), counting those still running; a quarter within 5 and three quarters within 13. This study's 4 months is below that.

Counting every sponsor, half of 582 studies reached it within 9 months; a quarter within 5 and three quarters within 16.

How these figures are worked out, and which studies are left out of them.

Registered
Apr 6, 2021
First posted
Apr 8, 2021
StartActual
Apr 1, 2021
Primary completionActual
Aug 20, 2021
CompletionActual
Aug 20, 2021
Last update
Sep 8, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 8, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04834856
Lead sponsor
Molecular Partners AG
Responsible party
Sponsor
First posted
Apr 8, 2021
Start date
Apr 1, 2021
Primary completion
Aug 20, 2021
Completion
Aug 20, 2021
Last update
Sep 8, 2021

Oversight

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 Sep 2021. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: Ensovibep

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