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Adjunctive Clindamycin Versus Linezolid for β-lactam Treated Patients With Invasive Group A Streptococcal Infections

Comparative Effectiveness of Adjunctive Clindamycin Versus Linezolid for β-lactam Treated Patients With Invasive Group A Streptococcal Infections: A Target Trial Emulation

Status
UNKNOWN
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT06126263
Acronym
iGASAntitox
Enrollment
1000
Registered
2023-11-13
Start date
2023-01-01
Completion date
2024-06-30
Last updated
2023-11-13

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

Conditions

Infection, Bacterial, Infection, Bloodstream, Invasive Group A Beta-Haemolytic Streptococcal Disease, Necrotizing Soft Tissue Infection, Streptococcal Sepsis, Streptococcal Toxic Shock Syndrome

Keywords

Invasive GAS, necrotizing soft tissue infection, streptococcal toxic shock syndrome, linezolid, clindamycin, anti-toxin therapy

Brief summary

This study aims to emulate a hypothetical target pragmatic multi-center, non-blinded trial of adult inpatients in the PINC AITM dataset with B-lactam treated culture confirmed monomicrobial invasive Group A streptococcus (GAS) between the years 2015-2021

Interventions

DRUGLinezolid

Adjunctive antitoxin therapy

DRUGClindamycin

Adjunctive antitoxin therapy

Sponsors

Emory University
CollaboratorOTHER
National Institutes of Health Clinical Center (CC)
Lead SponsorNIH

Study design

Observational model
COHORT
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to 100 Years
Healthy volunteers
No

Inclusion criteria

* Adult inpatients patients (=\> 18 y of age) * Monomicrobial Group A streptococcus invasive infection * Primary therapy with a B-lactam agent (initiated before or on same day as adjunctive anti-toxin therapy)

Exclusion criteria

* Patients with a polymicrobial GAS culture (non-GAS organisms identified on eligibility GAS culture) * Patients who received linezolid but have a documented linezolid resistant isolate * Patients with GAS infections of non-sterile non-invasive sites (i.e sites which do not meet above mentioned inclusion criteria) which include but not limited to the lower urinary tract, upper respiratory tract * Patient with concomitant MSSA/MRSA invasive infection (+/- seven days of index GAS eligibility culture) * Patients who receive both anti-toxin agents (violation of protocol) * Patient who do not complete at least 3 days of B-lactam (violation of protocol)

Design outcomes

Primary

MeasureTime frameDescription
In hospital mortality or discharge to hospiceHospital stayIn hospital mortality or discharge to hospice

Secondary

MeasureTime frameDescription
Length of stay among survivorsHospital stayDuration of hospitalization among surviving participants
Clostridioides difficile infectionWithin hospital stay of interestC. difficile positive (PCR or antigen) result within same encounter downstream of the antitoxin therapy within 30 days and/or presence of a non present on admission (POA) C. difficile diagnosis code in conjugation with receipt of C. difficile therapy (PO/rectal vancomycin or PO fidaxomicin or IV metronidazole)

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026