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Daptomycin vs. Vancomycin for the Treatment of Methicillin Resistant S. Aureus Bacteremia

DAPTO-SNAP: Daptomycin vs. Vancomycin for the Treatment of Methicillin Resistant S. Aureus Bacteremia

Status
Recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06637332
Acronym
DAPTO-SNAP
Enrollment
300
Registered
2024-10-15
Start date
2024-11-14
Completion date
2029-11-01
Last updated
2026-09-09

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

Conditions

S. Aureus Bacteremia, S. Aureus Bloodstream Infection, Staphylococcus Aureus Bacteremia, Staphylococcus Aureus Endocarditis, Staphylococcus Aureus Septicemia

Keywords

S. aureus bacteremia, Methicllin resistant, MRSA, S. aureus bloodstream infection, Daptomycin, Vancomycin

Brief summary

This is an open label randomized controlled trial for patients with methicillin resistant S. aureus (MRSA) bloodstream infection which will directly compare the two most commonly used therapies, vancomycin and daptomycin. This study is an approved sub-study of The Staphylococcus aureus Network Adaptive Platform (SNAP) trial (NCT05137119)

Interventions

Daptomycin given by injection at a dose determined by the treating team but not to be less than 6mg/kg

Vancomycin by injection to be given at a dose selected by the treating team to achieve a desired trough level or AUC-based target, as determined by local standards of care

Sponsors

Todd C. Lee MD MPH FIDSA
Lead SponsorOTHER
University of Melbourne
CollaboratorOTHER
The Peter Doherty Institute for Infection and Immunity
CollaboratorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

The participant must meet all inclusion and

Exclusion criteria

for the SNAP Platform (NCT05137119) and also the following inclusion and

Design outcomes

Primary

MeasureTime frameDescription
Desirability of Outcome Ranking (DOOR)Day 90 post enrollment in the S. aureus Network Adaptive Platform Trial (NCT05137119)Desirability of Outcome Ranking (DOOR) - an ordinal outcome with 5 levels defined: Rank 1 - Alive without complication Rank 2 - Alive with 1 complication Rank 3 - Alive with 2 complications Rank 4 - Alive with 3 complications Rank 5 - Dead Complications include: 1. Clinical failure: Absence of resolution of clinical signs and symptoms of S. aureus bacteremia such that no additional antibiotic therapy is required or anticipated. 2. Infectious Complications: Including new endocarditis; new evidence of other deep metastatic foci (e.g., osteomyelitis or deep abscess); relapse of MRSA bacteremia after a patient has sterilized their initial blood cultures; readmission for subsequent care of S. aureus bacteremia; need for unplanned source control procedures; change of therapy due to inadequate clinical response. 3. Serious adverse drug event (Common Terminology Criteria class 4) due to study drug OR adverse drug event (classes 1-3) leading to discontinuation of the study drug

Secondary

MeasureTime frameDescription
Clinical failureDay 90 post enrollment in the S. aureus Network Adaptive Platform Trial (NCT05137119)Defined as the absence of resolution of clinical signs and symptoms of S. aureus bacteremia such that no additional antibiotic therapy is required or anticipated for its treatment.
Serious Adverse Event or Adverse Event Leading to DiscontinuationDay 90 post enrollment in the S. aureus Network Adaptive Platform Trial (NCT05137119)Defined as a serious adverse drug event (Common Terminology Criteria for Adverse Events (CTCAE) class 4) presumed due to study drug OR adverse drug event (CTCAE classes 1-3) leading to discontinuation of the study drug
All cause mortalityDay 90 post enrollment in the S. aureus Network Adaptive Platform Trial (NCT05137119)Death from any cause
Infectious ComplicationsDay 90 post enrollment in the S. aureus Network Adaptive Platform Trial (NCT05137119)Defined as change in therapy for inadequate clinical response; new endocarditis; new evidence of other deep metastatic foci (e.g., osteomyelitis or deep abscess); relapse of MRSA bacteremia after a patient has sterilized their initial blood cultures; readmission for subsequent care of S. aureus bacteremia; need for unplanned source control procedures; change of antibiotic therapy due to inadequate clinical response. New implies that the complication was not suspected at enrollment and is not a function of delay to diagnostic testing.
Drug Induced MyostitisOccurring while on therapy up to day 42 from enrollment in SNAP (NCT05137119)Defined as a creatinine kinase level greater than or equal to 5 times the upper limit of normal
Eosinophilic pneumoniaOccurring while on therapy up to day 42 from enrollment in SNAP (NCT05137119)Defined as the development of symptomatic eosinophilic pneumonia as diagnosed by the treating team in consultation with the appropriate specialists

Countries

Australia, Canada, New Zealand

Contacts

CONTACTLina Petrella
lina.petrella@muhc.mcgill.ca514-934-1934
PRINCIPAL_INVESTIGATORTodd C Lee, MD MPH FIDSA

McGill University Health Centre/Research Institute of the McGill University Health Centre

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 10, 2026