Comparing Oral Versus Parenteral Antimicrobial Therapy (COPAT)

August 22, 2025 updated by: Joy J. Juskowich, MD, West Virginia University

Comparing Oral Versus Parenteral Antimicrobial Therapy (COPAT) Trial

This is an investigator initiated multisite pragmatic randomized controlled trial designed to demonstrate equivalent effectiveness with improved safety of early transition from intravenous (IV) antimicrobial therapy to complex outpatient oral antimicrobial therapy (COpAT) across various infectious diseases (endovascular, bone and joint, skin and soft tissue, pulmonary, gastrointestinal, and genitourinary infections).

All patients referred for outpatient parenteral antimicrobial therapy (OPAT) will be evaluated by the research team with respect to inclusion/exclusion criteria. If determined eligible for enrollment, patients will be approached by a study investigator who will present the COPAT Trial. Once informed consent is obtained, patients will be randomized 2:1 using computer software into experimental or control (standard of care) group, respectively: Experimental: COpAT only on hospital discharge; Control: Conventional OPAT, OPAT transitioned to COpAT later in outpatient setting, or long-acting parenteral lipoglycopeptides. Both groups will be followed by an ID physician on the research team with in-person or telemedicine ID Clinic standard of care visits at 2, 6, and 12 weeks after hospital discharge. At the 6-week ID Clinic follow-up, patients will be asked to complete a patient satisfaction survey. The following 2 primary outcomes will be assessed: cure at 3 months using clinical (resolution of infection) and laboratory (improvement in inflammatory markers) parameters and adverse events related to antimicrobial therapy/vascular access complication or readmission at 3 months. The following secondary outcome will be assessed: patient satisfaction at 6 weeks. The experimental group is being compared to standard of care in current clinical practice.

As this is a pragmatic clinical trial, patients will not undergo additional invasive testing or procedures.

Study Overview

Status

Terminated

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

94

Phase

  • Phase 4

Contacts and Locations

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

Study Locations

  • United States
    • West Virginia
      • Morgantown, West Virginia, United States, 26506
        • West Virginia University

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 (must meet all of the following):

  • English speaking
  • The patient is hospitalized at J.W. Ruby Memorial Hospital, United Hospital Center, Berkeley Medical Center, Wheeling Hospital, or Camden Clark Medical Center
  • The patient has been diagnosed with ≥ 1 of the following: endovascular, bone and joint, skin and soft tissue, pulmonary, gastrointestinal, or genitourinary infection
  • The patient is being transitioned to 2-8 weeks of IV antibacterial therapy on hospital discharge
  • The patient has capacity to participate in routine OPAT/COpAT follow-up (telephone check-ins, laboratory monitoring, and in-person or telemedicine ID Clinic follow-up)

Exclusion (may not meet any of the following):

  • The patient is not appropriate for OPAT (active injection drug use, lack of infusion resources, and/or unstable outpatient environment)
  • The patient is not appropriate for COpAT (unable to receive PO medication or lack of an effective PO antimicrobial option based on susceptibility testing)
  • The patient is unable to give informed consent
  • The patient is a prisoner, pregnant, and/or mentally handicapped
  • The patient is determined unsafe for enrollment at the primary team's discretion

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: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Group 1 (Experimental)
COpAT (oral antimicrobial therapy) on hospital discharge
Drug: Amoxicillin, amoxicillin-clavulanate, cefadroxil, cefpodoxime, cefalexin, ciprofloxacin, delafloxacin, doxycycline, levofloxacin, linezolid
COpAT (oral antimicrobial therapy) on hospital discharge
Other Names:
  • metronidazole, moxifloxacin, rifampin, trimethoprim-sulfamethoxazole
Active Comparator: Group 2 (Control)
Standard of care (IV antimicrobial therapy) on hospital discharge
Drug: Ampicillin, ampicillin-sulbactam, cefazolin, cefepime, ceftaroline, ceftazidime, ceftazidime-avibactam, dalbavancin, daptomycin, ertapenem
Standard of care (IV antimicrobial therapy) on hospital discharge
Other Names:
  • meropenem, oritavancin, oxacillin, penicillin, piperacillin-tazobactam, tigecycline, vancomycin

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Cure/Control at 3 Months
Time Frame: 3 months after hospital discharge
Number of patients with cure/control using clinical (resolution of infection - e.g., wound healed) and laboratory (improvement in inflammatory markers - e.g., CRP normalization) parameters as adjudicated by 2 ID faculty blinded to study arm
3 months after hospital discharge
Adverse Events Related to Antimicrobial Therapy
Time Frame: Up to 3 months after hospital discharge
Number of participants with adverse events requiring intervention related to antimicrobial therapy (e.g., thrombocytopenia)
Up to 3 months after hospital discharge
Adverse Events Related to Vascular Access
Time Frame: Up to 3 months after hospital discharge
Number of participants with adverse events requiring intervention related to vascular access complication (e.g., deep venous thrombosis)
Up to 3 months after hospital discharge
Overall Readmission
Time Frame: Up to 3 months after hospital discharge
Number of participants readmitted for any reason up to 3 months after discharge from the hospital
Up to 3 months after hospital discharge

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of Participants Reporting 'Satisfied' or 'Very Satisfied' on Patient Satisfaction Survey
Time Frame: 6 weeks after hospital discharge
Patient satisfaction using the COPAT Trial Patient Satisfaction Survey at 6 Weeks, which is a short questionnaire (with the overall satisfaction question incorporating a Likert scale 1= Very Dissatisfied, 5= Very Satisfied) designed to assess overall patient satisfaction. Overall satisfaction totaled from participants answering 4= Satisfied and 5= Very Satisfied.
6 weeks after hospital discharge
Number of Participants Who Answered 'Yes' to the Survey Question "Would You Have Preferred to be in the Other Study Arm? (Yes or No)"
Time Frame: 6 weeks after hospital discharge
The number of participants who expressed a preference to be in the other study arm (i.e., answers 'Yes' to the survey question "Would you have preferred to be in the other study arm? Yes or No").
6 weeks after hospital discharge

Collaborators and Investigators

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

Sponsor

West Virginia University

Investigators

  • Principal Investigator: Joy J. Juskowich, MD, West Virginia University
  • Principal Investigator: Arif R. Sarwari, MD, MSc, MBA, West Virginia University

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

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)

August 4, 2023

Primary Completion (Actual)

February 14, 2025

Study Completion (Actual)

February 14, 2025

Study Registration Dates

First Submitted

July 14, 2023

First Submitted That Met QC Criteria

July 24, 2023

First Posted (Actual)

August 7, 2023

Study Record Updates

Last Update Posted (Estimated)

August 26, 2025

Last Update Submitted That Met QC Criteria

August 22, 2025

Last Verified

August 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2304754420

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.

No

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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