Evaluation of PLG0206 in Prevention of Recurrent Infection in Patients Undergoing Debridement, Antibiotics, and Implant Retention (DAIR) for Treatment of a Periprosthetic Joint Infection (PJI) Following Knee Arthroplasty
RETAIN
RETAIN: A Phase 2/3 Randomized, Placebo-Controlled Study to Evaluate the Efficacy of PLG0206 in Prevention of Recurrent Infection in Patients Undergoing Debridement, Antibiotics, and Implant Retention (DAIR) for Treatment of a Periprosthetic Joint Infection (PJI) Following Total Knee Arthroplasty (TKA)
1 other identifier
interventional
240
1 country
7
Brief Summary
The goal of this clinical trial is to evaluate whether the investigational drug PLG0206 can help reduce recurrence of infection in adults who have undergone total knee replacement and are receiving a DAIR (Debridement, Antibiotics, and Implant Retention) surgical procedure to treat a Prosthetic Joint Infection (PJI). The study will also assess the safety of PLG0206 when used as an irrigation solution during the DAIR procedure. Participants will receive either PLG0206 or a placebo (an inactive substance that looks like the investigational drug), in addition to standard of care treatments. All participants will be monitored for approximately one year following their DAIR procedure.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_2
Started Feb 2026
7 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
September 18, 2025
CompletedFirst Posted
Study publicly available on registry
October 9, 2025
CompletedStudy Start
First participant enrolled
February 3, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
September 1, 2028
ExpectedStudy Completion
Last participant's last visit for all outcomes
September 1, 2028
March 10, 2026
March 1, 2026
2.6 years
September 18, 2025
March 6, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Reduction in Treatment Failure Post DAIR
Proportion of participants with PJI treatment failure following DAIR
From treatment through 12 months
Secondary Outcomes (17)
Reduction Rate of PJI-related Surgical Intervention
From treatment through 12 months
Safety of PLG0206
From treatment through 12 months
Survival
From treatment through 12 months
Efficacy of PLG0206 on Clinical Outcome
At Days 14, 30, 90, 180, 270, and 365
Time to Treatment Failure
From treatment through 12 months
- +12 more secondary outcomes
Study Arms (2)
PLG0206
EXPERIMENTALPLG0206 will be administered as an irrigation solution during DAIR procedure
Placebo
PLACEBO COMPARATORPlacebo (normal saline) will be administered as an irrigation solution during DAIR procedure
Interventions
Eligibility Criteria
You may qualify if:
- Male or female participants age between 18 and \<80 years
- Able to provide informed consent, geographically stable, and able to comply with the required follow-up visits
- Suspected or confirmed PJI of the knee
- Well-fixed and positioned prosthesis and good condition of surrounding soft tissue (no sinus tract)
- A single DAIR procedure is indicated as treatment of PJI
- Agree to use contraceptives if of childbearing potential
You may not qualify if:
- Loose prosthesis or surgical treatment planned for removal of well-fixed, nonmodular implants
- Anticipated to require antibiotic therapy for \>6 months after DAIR procedure
- Infection spread beyond the affected knee joint (e.g., osteomyelitis)
- History of a prior PJI of the affected knee
- Two or more prior revisions in the affected joint
- Epithelialized sinus tract with evidence of communication to the joint or visualization of prosthesis
- Diabetes mellitus and with an A1c ≥9%
- History of malignant disease and having received immunosuppressive therapy, radiation therapy, or chemotherapy within the past year
- Known immunodeficiency (e.g., splenectomy; sickle cell anemia; human immunodeficiency virus \[HIV\] with recent CD4 count \<200 cells/mm3; or primary humoral, bone marrow, or other transplantation)
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Peptilogicslead
Study Sites (7)
Clinical Trial Site
Sarasota, Florida, 34239, United States
Clinical Trial Site
Tamarac, Florida, 33321, United States
Clinical Trial Site
Baltimore, Maryland, 21215, United States
Clinical Trial Site
Boston, Massachusetts, 02120, United States
Clinical Trial Site
Cincinnati, Ohio, 45267, United States
Clinical Trial Site
Columbus, Ohio, 43210, United States
Clinical Trial Site
Morgantown, West Virginia, 26506, United States
MeSH Terms
Interventions
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- RANDOMIZED
- Masking
- TRIPLE
- Who Masked
- PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
September 18, 2025
First Posted
October 9, 2025
Study Start
February 3, 2026
Primary Completion (Estimated)
September 1, 2028
Study Completion (Estimated)
September 1, 2028
Last Updated
March 10, 2026
Record last verified: 2026-03