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WithdrawnNCT05495815ProperSATUpdated Feb 10, 2026

Proper Duration of Suppressive Antibiotic Therapy After Debridement, Antibiotics, and Implant Retention

An interventional study of 6 months of SAT and 12 months of SAT in Periprosthetic Joint Infection and Antibiotic Suppression, sponsored by University of Maryland, Baltimore. Withdrawn at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-02-10.

Sponsored by University of Maryland, Baltimore · Not applicable, Interventional, and Treatment

Why this study was withdrawn
No participants enrolled.
Phase
Not applicable
Study type
Interventional
Enrollment
0
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Multiple studies have demonstrated oral suppressive antibiotic therapy (SAT), after intravenous antibiotics, maximizes reoperation-free survival of total joint arthroplasty (TJA) debridement, antibiotics, and implant retention (DAIR) for acute periprosthetic joint infection (PJI). However, little is known regarding sequelae of SAT after DAIR for PJI. Prior studies have small or heterogeneous patient cohorts, variable antibiotic regimens, arrive at disparate conclusions, and do not establish antibiotic resistance risk.

The investigators propose a prospective randomized controlled multicenter study to expand on findings in a retrospective, multi-center pilot study. Study aims are to evaluate SAT after DAIR of acutely infected primary TJA regarding: 1) adverse drug reactions/intolerance; 2) reoperation for infection; and 3) antibiotic resistance.

02

Conditions studied

  • Periprosthetic Joint Infection
  • Antibiotic Suppression
03

In context

Lead sponsor

University of Maryland, Baltimore is the lead sponsor of 687 studies on the registry; 130 are open to participants now.

Of its 90 completed or terminated interventional studies of FDA-regulated products, 63 (70%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • over 18 years-old
  • underwent DAIR with modular component exchange for acute TJA PJI, as defined by Musculoskeletal Infection Society Criteria, with symptom duration less than 4 weeks
  • on postoperative oral SAT for at least 3 months

Exclusion criteria

Exclusion Criteria:

  • underwent aseptic revision surgery
  • had one-stage, 1.5-stage, or two-stage revision surgery
  • did not have postoperative SAT
  • did not have follow-up that allowed for evaluation of SAT sequelae
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
0 participants (actual)

Study arms

  • Active comparator
    6 months of SAT

    TJA DAIR, followed by 6 weeks of IV antibiotics then 6 months of oral suppressive antibiotic therapy

    Drug: 6 months of SAT

  • Active comparator
    12 months of SAT

    TJA DAIR, followed by 6 weeks of IV antibiotics then 12 months of oral suppressive antibiotic therapy

    Drug: 12 months of SAT

  • Active comparator
    Indefinite SAT

    TJA DAIR, followed by 6 weeks of IV antibiotics then indefinite oral suppressive antibiotic therapy

    Drug: Indefinite SAT

Interventions

  • Drug6 months of SAT

    6 months of oral suppressive antibiotic therapy

  • Drug12 months of SAT

    12 months of oral suppressive antibiotic therapy

  • DrugIndefinite SAT

    Indefinite oral suppressive antibiotic therapy

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What researchers measure

Primary outcomes

  1. Reoperation for infection recurrence

    Time frame: 2 years after patient enrollment

Secondary outcomes

  1. Antibiotic resistance, evidenced by change in antimicrobial sensitivity profile, developed by infecting organism after suppressive antibiotic therapy causing infection recurrence

    Time frame: At time of reoperation (within 2 years of patient enrollment)

  2. Adverse drug reaction or intolerance, defined as any symptom or laboratory value derangement requiring a change in, or discontinuation of, antimicrobial therapy

    Antibiotic intolerance is any Grade I sign from CTCAE v5.0, while adverse drug reaction is any Grade 2 sign or higher.

    Time frame: During antibiotic administration (up to 2 years after patient enrollment)

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Study locations

1 site
  • University of Maryland
    Baltimore, Maryland 21201, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 10, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05495815
Lead sponsor
University of Maryland, Baltimore
Collaborators
OrthoCarolina Research Institute, Inc., University of Arkansas, OrthoMichigan, NYU School of Medicine, Sinai Hospital, MedStar Health
Responsible party
Sumon Nandi (Associate Professor, Chief of Adult Reconstruction, University of Maryland, Baltimore) — Principal investigator
First posted
Aug 10, 2022
Start date
Dec 2024 (estimated)
Primary completion
Feb 2026 (estimated)
Completion
Jun 2026 (estimated)
Last update
Feb 10, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is withdrawn, as verified in Feb 2026. You cannot join it, but the record below documents what was studied.

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