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Not yet recruitingNCT07461337Updated Mar 10, 2026

Bacteriophage Therapy for Staphylococcus Lugdunensis Prosthetic Joint Infection

A Phase 1/2 interventional study of Five phage anti-Staphylococcus aureus bacteriophage cocktail in Prosthetic Joint Infections of Hip and Bacteriophage Therapy, sponsored by University of Calgary. Not yet recruiting at 1 site in Canada. Open to female participants. Per ClinicalTrials.gov, last updated 2026-03-10.

Sponsored by University of Calgary · Phase 1/2, Interventional, and Treatment

Phase
Phase 1/2
Study type
Interventional
Enrollment
1
Allocation
Not applicable
Sex
Female
01

Study summary

This is a single-patient, phase I/II clinical trial that aims to evaluate the potential of a bacteriophage drug product to treat and prevent the recurrence of a Staphylococcus lugdunensis prosthetic joint infection of the hip. The patient has exhausted all conventional therapies, both surgical and medical, at considerable detriment to their quality of life. The treatment involves 2 intra-articular injections of bacteriophages into the joint and surrounding area and 14 days of intravenous phage therapy. The goal is to eliminate the infection and prevent further complications, providing a potential new treatment avenue for patients with difficult-to-treat infections.

02

Conditions studied

  • Prosthetic Joint Infections of Hip
  • Bacteriophage Therapy

Keywords

  • Bacteriophage
  • Periprosthetic joint infection
  • Phage therapy
03

In context

Lead sponsor

University of Calgary is the lead sponsor of 686 studies on the registry; 189 are open to participants now.

Of its 10 completed or terminated interventional studies of FDA-regulated products, 2 (20%) have results posted.

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

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • Diagnosis of active chronic prosthetic joint infection
  • Causative bacteria is susceptible to bacteriophage therapy in vitro
  • History of multiple failed antibiotic and surgical interventions

Exclusion criteria

Exclusion Criteria:

  • Stage 5 chronic kidney disease
  • Cirrhosis
  • A known allergy to phage products
  • Fever
  • Involvement in another clinical trial
  • Pregnancy
05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
1 participant (estimated)

Study arms

  • Experimental
    Bacteriophage drug product

    Five phage anti-Staphylococcus aureus bacteriophage cocktail

    Biological: Five phage anti-Staphylococcus aureus bacteriophage cocktail

Interventions

  • BiologicalFive phage anti-Staphylococcus aureus bacteriophage cocktail

    Five phage anti-Staphylococcus aureus bacteriophage cocktail for targeted treatment of a Staphylococcus lugdunensis infection.

06

What researchers measure

Primary outcomes

  1. Clinical response to phage therapy as determined by participant's absence of physical clinical symptoms including wound drainage, swelling, erythema, pain, and fever.

    Resolution of the infection, indicated by the absence of physical clinical symptoms including wound drainage, swelling, erythema, pain, and fever. The infection will be considered to be resolved if these physical clinical symptoms are absent.

    Time frame: 1 year

Secondary outcomes

  1. Safety and tolerability of phage therapy determined by incidence of treatment-emergent adverse events

    The safety outcome focuses on monitoring and documenting any adverse events (both serious and not) or reactions associated with bacteriophage therapy. Key safety measures include observing for immediate allergic reactions during the first dose, conducting regular clinical assessments, and performing routine bloodwork to detect any potential organ damage or unexpected side effects.

    Time frame: 29 days

07

Study locations

1 site
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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 Mar 10, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07461337
Lead sponsor
University of Calgary
Collaborators
Qeen Biotechnologies
Responsible party
Sponsor
First posted
Mar 10, 2026
Start date
Mar 2026 (estimated)
Primary completion
Mar 2027 (estimated)
Completion
Mar 2027 (estimated)
Last update
Mar 10, 2026

Study contacts

James N Powell, MD
Contact
jamesn.powell@albertahealthservices.ca
403-536-3725
Teresa Nguyen
Contact
403-536-3725

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 not yet recruiting, as verified in Feb 2026. You cannot join it, but the record below documents what was studied.

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