imPROving Quality of LIFe In the Long COVID Patient (PROLIFIC)

June 22, 2023 updated by: Petter Brodin, Karolinska Institutet

An Interventional, Double-Blinded, 2-Arm Study to Investigate the Efficacy of Orally Administered Nirmatrelvir/Ritonavir Compared With Placebo/Ritonavir in Non-hospitalized Adult Participants Suffering From Post-COVID

The purpose of this study is to investigate the efficacy of orally administered nirmatrelvir/ritonavir compared with placebo/ritonavir to improve quality of life in non-hospitalized adult participants suffering from post-acute COVID-19 syndrome.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

At present there is no curative treatment for post-acute COVID-19 syndrome (PACS). Treatment is focused on symptom management and individualized rehabilitation. There is data indicating SARS-CoV-2 viral persistence and chronic immune system activation in PACS. We are proposing an interventional, randomized and placebo-controlled clinical intervention trial of nirmatrelvir/ritonavir (300/100 mg) or placebo/ritonavir (100mg), twice daily for 15 days, in patients suffering from severe PACS. Patients meeting the WHO definition of severe PACS will be identified from a database of 988 patients cared for by the Karolinska University Hospital Post-COVID clinics since May 2020, and in whom extensive clinical and laboratory examinations have been performed. A total of 400 patients will be enrolled in this study and these will be randomized in a 2:1 ratio to receive either nirmatrelvir/ritonavir or placebo/ritonavir. The study will include deep exploratory systems-level analyses of the immune system in PACS patients, including changes induced by nirmatrelvir/ritonavir (Paxlovid®) treatment. The purpose of this study is to evaluate the efficacy of nirmatrelvir/ritonavir for its potential ability to provide sustained improvement in quality of life, in non-hospitalized patients with post-COVID, a patient group with high unmet medical needs.

Hypothesis: Nirmatrelvir/ritonavir (Paxlovid®) improves health-related quality of life measured using the EQ-5D-5L VAS scale, as compared to placebo/ritonavir, in objective and pre-defined clinical phenotypes: postural orthostatic tachycardia syndrome (POTS), microvascular dysfunction, inappropriate sinus tachycardia, persistent fever, post exertional malaise (PEM), fatigue, brain fog, dyspnea, dysfunctional breathing patterns or inflammatory phenotypes (increased plasma D-dimer, CRP, ESR and ferritin).

Study Type

Interventional

Enrollment (Estimated)

400

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • Sweden
      • Stockholm, Sweden, SE171 77
        • Recruiting
        • Karolinska Institutet
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. The subject has given written consent to participate in the study.
  2. ≥18 years of age at the time of the Screening Visit.
  3. Post-acute COVID-19 syndrome (PACS) according to the WHO definition.
  4. EQ-5D-5L VAS< 50
  5. All fertile participants must agree to use a highly effective method of contraception for the duration of the study and 28 days after last intake of the IMP.

Exclusion Criteria:

General exclusion criteria

  1. Other non-related conditions with PACS like symptoms.
  2. Renal function eGFR eGFRCysC < 60 mL/min/1.73 m2.
  3. Not able to comply with the study protocol.
  4. Previous Paxlovid treatment.
  5. Pregnancy or breastfeeding.
  6. Drug-drug interaction with ongoing treatment, including concomitant use of any medications or substances that are strong inducers of CYP3A4 within 28 days prior to first dose of nirmatrelvir/ritonavir and during study treatment.
  7. Participants who are planning or considering vaccination (including boosters) through Study Day 45.
  8. Active COVID-19 infection as verified by SARS CoV-2 positive antigen test.

  9. Self-reported medical conditions, including:

    1. Type 1 or Type 2 diabetes mellitus.
    2. Chronic kidney disease.
    3. Neurodevelopmental disorders (e.g., cerebral palsy, Down's syndrome) or other conditions that confer medical complexity (e.g., genetic or metabolic syndromes and severe congenital anomalies).
    4. Active cancer other than localized skin cancer, including those requiring treatment including palliative treatment), as long as the treatment is not among the prohibited medications that must be administered/continued during the trial period.
    5. Immunosuppressive disease (e.g., bone marrow or organ transplantation or primary immune deficiencies) OR prolonged use of immune-weakening medications:

    i. Has received corticosteroids equivalent to prednisone ≥20 mg daily for at least 14 consecutive days within 30 days prior to study entry.

    ii. Has received treatment with biologics (e.g., infliximab, ustekinumab, etc.), immunomodulators (e.g., methotrexate, 6MP, azathioprine, etc.), or cancer chemotherapy within 90 days prior to study entry.

    iii. HIV infection with CD4+ cell count <200/mm3.

  10. History of hospitalization for the medical treatment of acute COVID-19
  11. Current need for hospitalization or anticipated need for hospitalization within 48 hours after randomization in the clinical opinion of the site investigator.

  12. Prior/Concomitant Therapy:

    1. Current or expected use of any medications or substances that are highly dependent on CYP3A4 for clearance, and for which elevated plasma concentrations may be associated with serious and/or life-threatening events during treatment and for 4 days after the last dose of nirmatrelvir/ritonavir. List of potential interactions provided by Pfizer provided in Appendix A.
    2. Has received or is expected to receive monoclonal antibody treatment, antiviral treatment (e.g., molnupiravir), or convalescent COVID-19 plasma.

    Prior/Concurrent Clinical Study Experience:

  13. Is unwilling to abstain from participating in another interventional clinical study with an investigational compound or device, including those for post-COVID-19 therapeutics, through the long-term follow-up visit.
  14. Previous administration with any investigational drug or vaccine within 30 days (or as determined by the local requirement) or 5 half-lives preceding the first dose of study intervention used in this study (whichever is longer).

  15. Known prior participation in this trial or other trial involving nirmatrelvir.

    Diagnostic Assessments:

  16. Known history of any of the following abnormalities in clinical laboratory tests (within past 6 months of the screening visit):

    • AST or ALT level ≥2.5 X ULN
    • Total bilirubin ≥2 X ULN (≥3 X ULN for Gilbert's syndrome)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Nirmatrelvir/ritonavir
Oral nirmatrelvir/ritonavir (Paxlovid) 300/100 mg twice daily for 15 days
Drug: Nirmatrelvir/ritonavir
300/100 mg tablet twice daily (q12h) administered orally for 15 days
Other Names:
  • Paxlovid
Placebo Comparator: Placebo/ritonavir
Oral placebo/ritonavir 100 mg twice daily for 15 days
Drug: Placebo/ritonavir
100mg tablet twice daily (q12h) administered orally for 15 days
Other Names:
  • Placebo

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change from baseline in quality of life at day 16
Time Frame: Baseline and day 16
The effect of oral administration of nirmatrelvir/ritonavir on quality of life measured as change from baseline using the EQ-5D-5L VAS scale.
Baseline and day 16

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change from baseline in quality of life at days 45 and 90
Time Frame: Baseline and days 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on quality of life measured as change from baseline using the EQ-5D-5L VAS scale.
Baseline and days 45 and 90
Change from baseline in hemodynamic response at days 45 and 90
Time Frame: Baseline and days 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on hemodynamic response (only patients diagnosed with postural orthostatic tachycardia syndrome, POTS). Change from baseline in delta maximum heart rate during active standing test.
Baseline and days 45 and 90
Change from baseline in fever in patients with POTS at days 45 and 90
Time Frame: Baseline and days 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on fever (only patients diagnosed with POTS). Change from baseline in POTS-specific symptoms as measured by using the Malmo POTS score, MAPS.
Baseline and days 45 and 90
Change from baseline in endothelial function at day 45
Time Frame: Baseline and day 45
The effect of oral administration of nirmatrelvir/ritonavir on reactive hyperemia index. Change from baseline in endothelial function measured using the EndoPat® device.
Baseline and day 45
Change from baseline in heart rate at days 45 and 90
Time Frame: Baseline and days 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on 24-h average heart rate. Change from baseline in heart rate using ECG monitoring device.
Baseline and days 45 and 90
Change from baseline in fever at days 16, 45 and 90
Time Frame: Baseline and days 16, 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on fever. Change from baseline in body temperature.
Baseline and days 16, 45 and 90
Change from baseline in physical capacity at days 16, 45 and 90
Time Frame: Baseline and days 16, 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on physical capacity. Change from baseline as measured by 6-minute walk test.
Baseline and days 16, 45 and 90
Change from baseline in handgrip strength at days 16, 45 and 90
Time Frame: Baseline and days 16, 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on handgrip strength. Change from baseline as measured by JAMAR hand dynamometer.
Baseline and days 16, 45 and 90
Change from baseline in physical activity at days 16, 45 and 90
Time Frame: Baseline and days 16, 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on physical activity. Change from baseline as measured by accelerometer.
Baseline and days 16, 45 and 90
Change from baseline in post-exertional malaise at day 90
Time Frame: Baseline and day 90
The effect of oral administration of nirmatrelvir/ritonavir on post-exertional malaise. Change from baseline in total score as measured by the Post-Exertional Malaise (PEM) short form.
Baseline and day 90
Change from baseline in fatigue at days 16, 45 and 90
Time Frame: Baseline and days 16, 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on fatigue. Change from baseline as measured by the fatigue severity scale (FSS) and mental fatigue scale (MFS).
Baseline and days 16, 45 and 90
Change from baseline in cognitive dysfunction at days 16, 45 and 90
Time Frame: Baseline and days 16, 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on cognitive dysfunction. Change from baseline over time as measured by the Montreal Cognitive Assessment (MoCA) test.
Baseline and days 16, 45 and 90
Change from baseline in dyspnea at days 16, 45 and 90
Time Frame: Baseline and days 16, 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on dyspnea measured as change from baseline in respiratory symptoms using the Chronic obstructive disease assessment (CAT) and Modified Medical Research Council (mMRC) tests.
Baseline and days 16, 45 and 90
Change from baseline in dysfunctional breathing patterns, maximum inspiratory pressure and lung function at days 16, 45 and 90
Time Frame: Baseline and days 16, 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on dysfunctional breathing patterns, maximum inspiratory pressure, and lung function. Change from baseline in Njimegen questionnaire, maximal inspiratory pressure (MIP), forced vital capacity (FVC) and forced expiratory volume in one second (FEV1).
Baseline and days 16, 45 and 90
Change from baseline in plasma biomarkers at days 16, 45 and 90
Time Frame: Baseline and days 16, 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on plasma biomarkers. Change from baseline in the following plasma biomarkers: D-dimer, CRP, ESR, ferritin, NTproBNP and LD.
Baseline and days 16, 45 and 90
Change from baseline in dysautonomia at days 45 and 90
Time Frame: Baseline and days 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on dysautonomia symptoms. Change from baseline as measured using the Composite Autonomic Symptom Score (Compass31) questionnaire.
Baseline and days 45 and 90

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change from baseline in breathing patterns at days 16, 45 and 90
Time Frame: Baseline and days 16, 45 and 90
The effect of oral administration of nirmatrelvir/ritonavir on breathing pattern. Change from baseline in dynamic spirometry measurements.
Baseline and days 16, 45 and 90
Change from baseline in persistence of SARS-CoV-2 virus at day 16
Time Frame: At baseline and day 16

The effect of oral administration of nirmatrelvir/ritonavir on persistence of SARS-CoV-2 virus as measured by:

Protein profiling using Olink Explore Inflammation panel. Nucleosome-profiling (using Volition) and circulating spike (using SIMOA™, Quanterix).

PBMC profiling for scTCR-sequencing (using BD Rhapsody) with assessment of Super-Ag-mediated T-cell activation.

Immune system signatures associated with disease states using RNA-sequencing of stabilized whole blood (PaxGene).
At baseline and day 16
Change from baseline in immune cell function at day 16
Time Frame: At baseline and day 16
The effect of oral administration of nirmatrelvir/ritonavir on changes in immune cell function as assessed by high-dimensional cytometry.
At baseline and day 16
Change from baseline in relationships between genotypes and immune function at day 16
Time Frame: At baseline and day 16
The effect of oral administration of nirmatrelvir/ritonavir on the relationship between genotypes and immune function at the molecular level. Circulating protein levels adjusted for DNA-variants.
At baseline and day 16

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Karolinska Institutet

Collaborators

Karolinska University Hospital
Pfizer

Investigators

  • Principal Investigator: Michael Runold, MD, PhD, Karolinska University Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 1, 2023

Primary Completion (Estimated)

January 31, 2024

Study Completion (Estimated)

March 31, 2024

Study Registration Dates

First Submitted

April 20, 2023

First Submitted That Met QC Criteria

April 20, 2023

First Posted (Actual)

April 21, 2023

Study Record Updates

Last Update Posted (Actual)

June 23, 2023

Last Update Submitted That Met QC Criteria

June 22, 2023

Last Verified

June 1, 2023

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • KI-PROLIFIC-2023
  • 2022-003855-32 (EudraCT Number)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

Yes

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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