NCT05595369

Brief Summary

This study is a platform protocol designed to be flexible so that it is suitable for a wide range of settings within health care systems and in community settings where it can be integrated into COVID-19 programs and subsequent treatment plans. This protocol is a prospective, multi-center, multi-arm, double-blind, randomized, controlled platform trial with different interventions organized as appendices to the protocol. Each appendix (or sub-study) evaluates potential mechanisms of action, efficacy, and safety of antivirals and other therapeutics in individuals with PASC, according to the platform protocol objectives. The hypothesis is that persistent viral infection, viral reactivation, and/or overactive/chronic immune response and inflammation are underlying contributors to PASC and that antiviral and other applicable therapies may result in viral clearance or decreased inflammation and improvement in PASC symptoms.

Trial Health

90
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
963

participants targeted

Target at P75+ for phase_2

Timeline
Completed

Started Jul 2023

Geographic Reach
2 countries

69 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

October 11, 2022

Completed
16 days until next milestone

First Posted

Study publicly available on registry

October 27, 2022

Completed
9 months until next milestone

Study Start

First participant enrolled

July 26, 2023

Completed
1 year until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 6, 2024

Completed
7 months until next milestone

Study Completion

Last participant's last visit for all outcomes

March 13, 2025

Completed
9 months until next milestone

Results Posted

Study results publicly available

December 2, 2025

Completed
Last Updated

December 2, 2025

Status Verified

November 1, 2025

Enrollment Period

1 year

First QC Date

October 11, 2022

Results QC Date

July 29, 2025

Last Update Submit

November 17, 2025

Conditions

Keywords

PASC

Outcome Measures

Primary Outcomes (1)

  • Total Number of Participants Enrolled in Each Appendix

    Appendix-specific outcome measure data will be reported under the associated NCT ID.

    90 days

Study Arms (3)

Experimental: Paxlovid 25 day dosing

EXPERIMENTAL

Drug: Paxlovid 25 day dosing Paxlovid (nirmatrelvir 300mg, ritonavir 100mg) bid x 25 days See NCT05965726 (Paxlovid Sub-study)

Drug: Experimental: Paxlovid 25 day dosing

Experimental: Paxlovid 15 day dosing

EXPERIMENTAL

Drug: Paxlovid 15 day Dosing Paxlovid (nirmatrelvir 300mg and ritonavir 100mg) bid x 15 days then ritonavir 100mg bid plus nirmatrelvir matching placebo bid x 10 days See NCT05965726 (Paxlovid Sub-study)

Drug: Experimental: Paxlovid 15 day dosing

Placebo Comparator: Control

PLACEBO COMPARATOR

Drug: Control ritonavir 100mg taken bid plus nirmatrelvir matching placebo bid bid x 25 days See NCT05965726 (Paxlovid Sub-study)

Drug: Placebo Comparator: Control

Interventions

Drug: Paxlovid 25 day dosing Paxlovid (nirmatrelvir 300mg, ritonavir 100mg) bid x 25 days See NCT05965726 (Paxlovid Sub-study)

Experimental: Paxlovid 25 day dosing

Drug: Paxlovid 15 day Dosing Paxlovid (nirmatrelvir 300mg and ritonavir 100mg) bid x 15 days then ritonavir 100mg bid plus nirmatrelvir matching placebo bid x 10 days See NCT05965726 (Paxlovid Sub-study)

Experimental: Paxlovid 15 day dosing

Drug: Control ritonavir 100mg taken bid plus nirmatrelvir matching placebo bid bid x 25 days See NCT05965726 (Paxlovid Sub-study)

Placebo Comparator: Control

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • ≥ 18 years of age at the time of enrollment
  • Previous suspected, probably or confirmed SARS-CoV-2 infection, as defined by the Pan American Health Organization\*
  • \*Suspected and probable cases will only be allowed if it occurred before May 1, 2021, and will be limited to 10% of the study population. Otherwise, confirmed cases are required.
  • Suspected case of SARS-CoV-2 infection - Three options, A through C:
  • A. A person who meets the clinical OR epidemiological criteria. Clinical criteria: Acute onset of fever AND cough (influenza-like illness) OR Acute onset of ANY THREE OR MORE of the following signs or symptoms: fever, cough, general, weakness/fatigue, headache, myalgia, sore throat, coryza, dyspnea, nausea, diarrhea, anorexia. Epidemiological criteria: Contact of a probable or confirmed case or linked to a COVID-19 cluster; or
  • B. Acute respiratory infection with history of fever or measured fever of ≥ 38°C; and cough; with onset within the last 10 days; and who requires hospitalization); or
  • C. With no clinical signs or symptoms, NOR meeting epidemiologic criteria with a positive professional use or self-test SARS-CoV-2 antigen-Rapid Diagnostic Test.
  • Probable case of SARS-CoV-2 infection:
  • A. A patient who meets clinical criteria above AND is a contact of a probable or confirmed case or is linked to a COVID-19 cluster.
  • Confirmed case of SARS-CoV-2 infection - Two options, A through B:
  • A. A person with a positive nucleic acid amplification test, regardless of clinical criteria OR epidemiological criteria; or
  • B. Meeting clinical criteria AND/OR epidemiological criteria (See suspect case A). With a positive professional use or self-test SARS-CoV-2 Antigen-Rapid Diagnostic Test.
  • At least two moderate symptoms from the same symptom cluster or one severe cluster-associated symptom identified via the Cluster Targeted COVID-19 Symptom Questions (CTCSQ), with participant identifying new symptoms since COVID-19 illness and having persisted for at least 12 weeks
  • Meeting PRO Symptom Cluster criteria for at least one Symptom Cluster
  • Willing and able to provide informed consent, complete the surveys, clinical assessments, and return for all of the necessary follow-up visits

You may not qualify if:

  • An individual who meets any of the following criteria will be excluded from participation in this study. Refer to appendices for additional appendix-level criteria:
  • Known active acute SARS-CoV-2 infection ≤ 4 weeks from consent
  • Known severe anemia, defined as \< 8 g/dL
  • a. Cognitive dysfunction: known stroke that resulted in cognitive impairment within 3 months of enrollment b. Autonomic dysfunction: atrial fibrillation or significant cardiac arrhythmia, more than moderate alcohol consumption\*\*, pre-existing sustained severe hypertension (BP\> 180/110 mmHg in the sitting position) c. Exercise intolerance: i. any of the following within 4 weeks of consent - an acute myocardial infarction or unstable angina, uncontrolled arrhythmias causing symptoms or hemodynamic compromise, acute myocarditis or pericarditis, uncontrolled acutely decompensated heart failure (acute pulmonary edema), acute pulmonary embolism, suspected dissecting aneurysm, severe hypoxemia at rest, any acute or chronic disorder that may affect exercise performance ii. if the participant is aggravated by exercise (e.g., infection, thyrotoxicosis, unable to cooperate)
  • \*\* Defined as greater than 2 drinks a day for men and 1 drink a day for women. A drink is equivalent to 12 ounces of beer (5% alcohol content), 8 ounces of malt liquor (7% alcohol content), 5 ounces of wine (12% alcohol content), 1.5 ounces or a "shot" of 80-proof (40% alcohol content) distilled spirits or liquor (e.g., gin, rum, vodka, whiskey). 21
  • Known diagnosis of chronic Lyme disease with persistent symptoms, sequelae, or related therapy
  • Any non-marijuana illicit drug use within 30 days of informed consent
  • Current or recent use (within the last 14 days) of study intervention\*
  • Known allergy/sensitivity or any hypersensitivity to components of the study intervention (s) or control\*
  • Known contraindication(s) to study intervention(s),
  • Inability to discontinue symptomatic medications for the identified time periods
  • Moderate or severe immunocompromised patients, such as those described in the NIH COVID-19 Treatment Guidelines (https://www.covid19treatmentguidelines.nih.gov/ special populations/immunocompromised/)
  • Currently enrolled in another clinical trial outside this platform protocol or another study intervention appendix in this platform protocol\*\*\*
  • \*\*\*Participants may re-enroll in the trial for a different study intervention appendix if the participant has completed an appropriate washout period and efficacy has been determined for the appendix in which the participant was previously enrolled.
  • Any condition that would make the participant, in the opinion of the investigator, unsuitable for the study
  • +1 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (69)

University of Alabama at Birmingham

Birmingham, Alabama, 35205, United States

Location

University of Arizona/Banner University Medical Center Phoenix

Phoenix, Arizona, 85006, United States

Location

University of Arizona Banner Medical Center

Tucson, Arizona, 85719, United States

Location

Cedars Sinai Medical Center

Los Angeles, California, 90048, United States

Location

Hoag Memorial Hospital

Newport Beach, California, 92663, United States

Location

University of California San Francisco General Hospital

San Francisco, California, 94110, United States

Location

Stanford University

Stanford, California, 94305, United States

Location

Los Angeles Biomedical Institute at Harbor-UCLA Medical Center

Torrance, California, 90502, United States

Location

University of Colorado

Aurora, Colorado, 80045, United States

Location

Howard University Hospital

Washington D.C., District of Columbia, 20060, United States

Location

University of Florida College of Medicine Jacksonville

Jacksonville, Florida, 32206, United States

Location

Lakeland Regional Medical Center

Lakeland, Florida, 33805, United States

Location

Valencia Medical and Research Center

Miami, Florida, 33165, United States

Location

Grady Memorial Hospital

Atlanta, Georgia, 30303, United States

Location

Kaiser Permanente Southwood

Atlanta, Georgia, 30305, United States

Location

Morehouse School of Medicine

Atlanta, Georgia, 30310, United States

Location

Atlanta VA Medical Center

Atlanta, Georgia, 45267, United States

Location

Emory Health Care

Decatur, Georgia, 30030, United States

Location

Northwestern Memorial Hospital

Chicago, Illinois, 60611, United States

Location

Rush University Medical Center

Chicago, Illinois, 60612, United States

Location

University of Illinois at Chicago

Chicago, Illinois, 60612, United States

Location

North Shore University Health System

Evanston, Illinois, 60201, United States

Location

Koch Family Medicine

Morton, Illinois, 61550, United States

Location

Methodist Medical Center of Illinois

Peoria, Illinois, 61603, United States

Location

Saint Francis Medical Center

Peoria, Illinois, 61637, United States

Location

University of Kansas Medical Center

Kansas City, Kansas, 66160, United States

Location

University of Kentucky Chandler Medical Center

Lexington, Kentucky, 40536, United States

Location

Johns Hopkins Hospital

Baltimore, Maryland, 21287, United States

Location

Jadestone Clinical Research, LLC

Silver Spring, Maryland, 20904, United States

Location

Tufts Medical Center

Boston, Massachusetts, 02111, United States

Location

Brigham and Womens Hospital

Boston, Massachusetts, 02115, United States

Location

Boston Medical Center

Boston, Massachusetts, 02118, United States

Location

Beth Israel Deaconess Medical Center

Boston, Massachusetts, 02215, United States

Location

Mayo Clinic

Rochester, Minnesota, 55905, United States

Location

University of Mississippi Medical Center

Jackson, Mississippi, 39216, United States

Location

Washington University School of Medicine

St Louis, Missouri, 63110, United States

Location

Dartmouth Hitchcock Medical Center

Lebanon, New Hampshire, 03756, United States

Location

Rutgers University-Robert Wood Johnson Medical School

New Brunswick, New Jersey, 08901, United States

Location

University of New Mexico Health Science Center

Albuquerque, New Mexico, 87106, United States

Location

NYU Langone Health/Brooklyn Hospital

Brooklyn, New York, 11220, United States

Location

St. Lawrence Health Medical Campus

Canton, New York, 13676, United States

Location

Icahn School of Medicine at Mount Sinai

New York, New York, 10029, United States

Location

Weil Cornell Medicine

New York, New York, 10065, United States

Location

University of North Carolina

Chapel Hill, North Carolina, 27599, United States

Location

East Carolina University

Greenville, North Carolina, 27834, United States

Location

Duke Clinical and Translational Science Institute

Kannapolis, North Carolina, 28081, United States

Location

Wake Forest University

Winston-Salem, North Carolina, 27103, United States

Location

Lillestol Research, LLC

Fargo, North Dakota, 58104, United States

Location

University of Cincinnati Medical Center

Cincinnati, Ohio, 45267, United States

Location

University Hospitals Cleveland Medical Center

Cleveland, Ohio, 44106, United States

Location

MetroHealth System

Cleveland, Ohio, 44109, United States

Location

Cleveland Clinic

Cleveland, Ohio, 44195, United States

Location

Oklahoma Clinical and Translational Science Institute

Oklahoma City, Oklahoma, 73104, United States

Location

Oregon Health and Science University

Portland, Oregon, 97239, United States

Location

UPMC Presbyterian Shadyside

Pittsburgh, Pennsylvania, 15213, United States

Location

Avera McKennan Hospital & University Health Center

Sioux Falls, South Dakota, 57108, United States

Location

Clinical Trials Center of Middle Tennessee

Franklin, Tennessee, 37067, United States

Location

Houston Methodist Hospital

Houston, Texas, 77030, United States

Location

University of Texas Health Science Center at Houston

Houston, Texas, 77030, United States

Location

University of Texas Health Science Center at San Antonio

San Antonio, Texas, 78229, United States

Location

Vermont Lung Center, University of Vermont

Colchester, Vermont, 05446, United States

Location

University of Virginia

Charlottesville, Virginia, 22903, United States

Location

Sentara Norfolk General Hospital

Norfolk, Virginia, 23507, United States

Location

Swedish Health Services

Seattle, Washington, 98104, United States

Location

University of Washington

Seattle, Washington, 98109, United States

Location

Providence Medical Research Center

Spokane, Washington, 99204, United States

Location

West Virginia Clinical and Translational Science Institute

Morgantown, West Virginia, 26506, United States

Location

Froedtert Hospital-Medical College of Wisconsin

Milwaukee, Wisconsin, 53226, United States

Location

Hispanic Alliance for Clinical and Translational Research, Univ of Puerto Rico

San Juan, 00935, Puerto Rico

Location

Related Links

MeSH Terms

Conditions

Post-Acute COVID-19 Syndrome

Condition Hierarchy (Ancestors)

COVID-19Pneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract DiseasesPost-Infectious DisordersChronic DiseaseDisease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Results Point of Contact

Title
Kanecia Zimmerman, MD, PhD, MPH
Organization
Duke University

Study Officials

  • Kanecia Zimmerman, MD PhD

    Duke University

    STUDY CHAIR
  • Richard Whitley, MD

    University of Alabama at Birmingham Medical Center

    STUDY CHAIR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Masking Details
Double blind
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: As part of screening, potential participants will answer symptom questions. Eligible participants will then complete relevant Symptom Cluster assessments at the Screening visit. Participants will subsequently be assigned to one of the three Symptom Clusters based on the assessments. Participants must meet certain criteria within a specific symptom cluster in order to be included in the cluster. After study enrollment and initial cluster assignment, further assessments will be performed. Participants will undergo assessments for the symptom clusters for which the participants qualify.
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Associate Professor of Pediatrics

Study Record Dates

First Submitted

October 11, 2022

First Posted

October 27, 2022

Study Start

July 26, 2023

Primary Completion

August 6, 2024

Study Completion

March 13, 2025

Last Updated

December 2, 2025

Results First Posted

December 2, 2025

Record last verified: 2025-11

Data Sharing

IPD Sharing
Will not share

The PIs will share the summary of results on the study website: https://recovercovid.org/

Locations