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Study Evaluating Safety, Tolerability, and Efficacy of Intravenous AP-SA02 in Subjects With S. Aureus Bacteremia

Phase 1b/2a, Randomized, Double-Blind, Placebo-Controlled, Multiple Ascending Dose Study of Safety, Tolerability, and Efficacy of Intravenous AP-SA02 as an Adjunct to Best Available Antibiotic Therapy for the Treatment of Adults With Bacteremia Due to Staphylococcus Aureus

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05184764
Acronym
diSArm
Enrollment
56
Registered
2022-01-11
Start date
2022-04-26
Completion date
2025-01-14
Last updated
2026-03-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bacteremia, Bacteremia Due to Staphylococcus Aureus, Bacteremia Staph, Staphylococcus Aureus, Staphylococcus Aureus Bacteremia

Keywords

Bacteriophage, Phage, Bacteremia, Staphylococcus Aureus, Staphylococcus, SAB

Brief summary

Phase 1b/2a, Randomized, Double-Blind, Placebo-Controlled, Multiple Ascending Dose Escalation Study of the Safety, Tolerability, and Efficacy of Intravenous AP SA02 as an Adjunct to Best Available Antibiotic Therapy Compared to Best Available Antibiotic Therapy Alone for the Treatment of Adults With Bacteremia Due to Staphylococcus aureus

Detailed description

This study will be conducted in two phases: Phase 1b will to evaluate the safety and tolerability of multiple ascending intravenous (IV) doses of AP-SA02 or placebo as an adjunct to best available therapy (BAT) compared to BAT alone in subjects with SA bacteremia (SAB). Phase 2a will evaluate the efficacy, safety, and tolerability of multiple doses of AP-SA02 or placebo as an adjunct to BAT compared to BAT alone in subjects with complicated SAB.

Interventions

BIOLOGICALAP-SA02

Bacteriophage administered via intravenous bolus infusion

OTHERPlacebo

Inactive Placebo administered via intravenous bolus infusion

Sponsors

Armata Pharmaceuticals, Inc.
Lead SponsorINDUSTRY
United States Department of Defense
CollaboratorFED

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Intervention model description

Randomized, double-blind, placebo-controlled

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * A hospitalized female or male ≥ 18 years old * Positive blood culture for Staphylococcus aureus (SA) * Source of SA infection controlled, or a plan for source control, if relevant * Not pregnant or breastfeeding and is not of reproductive potential or agrees to use contraception if or reproductive potential Key

Exclusion criteria

* Concomitant growth of organisms besides SA * Left-sided infectious endocarditis by modified Duke criteria * Known or suspected brain abscess or meningitis * Known allergy to phage products

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Treatment-Emergent Adverse Events (Safety and Tolerability) Following Multiple Doses of Intravenous AP-Sa02.Day 1 first dose through Day 12 or through EOS (28 days after BAT) (Day 39-81).Incidence and severity of treatment-emergent adverse events as assessed by CTCAE v4.0. Per SAP, all patients with uncomplicated SAB (Phase 1 Cohort 1 and Cohort 2) will be combined.

Secondary

MeasureTime frameDescription
Clinical Improvement or Response at Day 1212 DaysDescription of clinical outcome in the Intent-to-Treat (ITT) Population. Clinical outcome of improvement or response is defined as survival with resolution of S. aureus-related clinical signs and symptoms as well as eradication of S. aureus bacteremia, and without new foci of infection or complications of S. aureus bacteremia.
Clinical Improvement or Response at 7 Days After Completion of Antibiotic Therapy as Assessed by the Investigator7 days post completion of best available antibiotic therapy, up to 60 days.Description of clinical outcome in the Intent-to-Treat (ITT) Population. Clinical outcome of improvement or response is defined as survival with resolution of S. aureus-related clinical signs and symptoms as well as eradication of S. aureus bacteremia, and without new foci of infection or complications of S. aureus bacteremia.
Clinical Improvement or Response at 7 Days After Completion of Antibiotic Therapy Assessed by the CEAC7 days post completion of best available antibiotic therapy, up to 60 days.Description of clinical outcome in the Intent-to-Treat (ITT) Population. Clinical outcome of improvement or response is defined as survival with resolution of S. aureus-related clinical signs and symptoms as well as eradication of S. aureus bacteremia, and without new foci of infection or complications of S. aureus bacteremia.
Clinical Improvement or Response as Assessed by the Investigator at 28 Days Post Completion of Best Available Antibiotic Therapy28 days post completion of best available antibiotic therapy, up to 81 days.Description of clinical outcome in the Intent-to-Treat (ITT) Population. Clinical outcome of improvement or response is defined as survival with resolution of S. aureus-related clinical signs and symptoms as well as eradication of S. aureus bacteremia, and without new foci of infection or complications of S. aureus bacteremia.
Clinical Improvement or Response as Assessed by the CEAC at 28 Days Post Completion of Best Available Antibiotic Therapy28 days post completion of best available antibiotic therapy, up to 81 days.Description of clinical outcome in the Intent-to-Treat (ITT) Population. Clinical outcome of improvement or response is defined as survival with resolution of S. aureus-related clinical signs and symptoms as well as eradication of S. aureus bacteremia, and without new foci of infection or complications of S. aureus bacteremia.

Countries

Australia, United States

Contacts

STUDY_DIRECTORDeborah Birx, MD

Armata Pharmaceuticals, Inc.

Baseline characteristics

Characteristic
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
1 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
13 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
34 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Region of Enrollment
Australia
1 participants
Region of Enrollment
United States
16 participants
Sex: Female, Male
Female
17 Participants
Sex: Female, Male
Male
39 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
deaths
Total, all-cause mortality
1 / 290 / 130 / 30 / 30 / 10 / 1
other
Total, other adverse events
19 / 2912 / 133 / 32 / 31 / 11 / 1
serious
Total, serious adverse events
4 / 293 / 133 / 32 / 31 / 10 / 1

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 24, 2026