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Contezolid Acefosamil Versus Linezolid for the Treatment of Acute Bacterial Skin and Skin Structure Infection

A Phase 2, Multicenter, Randomized, Double-Blind Study to Evaluate the Safety and Efficacy of Contezolid Acefosamil Compared to Linezolid Administered Intravenously and Orally to Adult Subjects With Acute Bacterial Skin and Skin Structure Infection

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03747497
Enrollment
196
Registered
2018-11-20
Start date
2018-11-15
Completion date
2019-03-26
Last updated
2022-11-08

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

Conditions

Skin Diseases, Bacterial, Gram-Positive Bacterial Infections

Keywords

ABSSSI, Acute bacterial skin and skin structure infection

Brief summary

The purpose of this study is to determine whether contezolid acefosamil is as safe and effective as linezolid in the treatment of adult patients with acute bacterial skin and skin structure infections

Interventions

IV and oral contezolid acefosamil given twice a day for 10 to 14 days

IV and oral linezolid given twice a day for 10 to 14 days

Sponsors

MicuRx
Lead SponsorINDUSTRY

Study design

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

Eligibility

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

Inclusion criteria

* Patients with systemic signs of infection diagnosed with acute bacterial skin and skin structure infection (ABSSSI) * Diagnosed with cellulitis/erysipelas, major cutaneous abscess, or wound infections

Exclusion criteria

* Uncomplicated skin infections * Severe sepsis or septic shock * ABSSSI solely due to Gram-negative pathogens * Prior systemic antibiotics within 96 hours of randomization

Design outcomes

Primary

MeasureTime frameDescription
Early Clinical Response at the Early Assessment Visit (ITT Population)48 to 72 hours after the start of study drugEarly clinical response assessment based on the electronic case report form (eCRF) data at Early Assessment (48-72 hours after start of study drug) where a successful response (i.e., responder) was defined as a reduction in primary ABSSSI lesion size ≥20% compared to baseline, and the subject did not receive a non-protocol specified systemic antibacterial agent with activity against Gram-positive organisms for the treatment of ABSSSI and did not die of any cause up to Early Assessment.

Countries

United States

Participant flow

Recruitment details

196 subjects were randomized

Participants by arm

ArmCount
Contezolid Acefosamil
Contezolid acefosamil 1500 IV x 1 dose, followed by 1000 mg IV q12h, for at least 3 total IV doses, followed by 1300 mg PO q12h
131
Linezolid
Linezolid 600 mg IV q12h, for at least 3 total IV doses, followed by 600 mg PO q12h
65
Total196

Baseline characteristics

CharacteristicTotalContezolid AcefosamilLinezolid
Age, Continuous44.5 years
STANDARD_DEVIATION 11.57
44.9 years
STANDARD_DEVIATION 11.87
43.7 years
STANDARD_DEVIATION 10.94
Ethnicity (NIH/OMB)
Hispanic or Latino
79 Participants51 Participants28 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
117 Participants80 Participants37 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
American Indian or Alaska Native
6 Participants5 Participants1 Participants
Race/Ethnicity, Customized
Asian
3 Participants2 Participants1 Participants
Race/Ethnicity, Customized
Black or African American
12 Participants8 Participants4 Participants
Race/Ethnicity, Customized
Native Hawaiian or Other Pacific Islander
2 Participants2 Participants0 Participants
Race/Ethnicity, Customized
Other
6 Participants5 Participants1 Participants
Race/Ethnicity, Customized
White
167 Participants109 Participants58 Participants
Sex: Female, Male
Female
70 Participants52 Participants18 Participants
Sex: Female, Male
Male
126 Participants79 Participants47 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
1 / 1231 / 64
other
Total, other adverse events
55 / 12327 / 64
serious
Total, serious adverse events
3 / 1231 / 64

Outcome results

Primary

Early Clinical Response at the Early Assessment Visit (ITT Population)

Early clinical response assessment based on the electronic case report form (eCRF) data at Early Assessment (48-72 hours after start of study drug) where a successful response (i.e., responder) was defined as a reduction in primary ABSSSI lesion size ≥20% compared to baseline, and the subject did not receive a non-protocol specified systemic antibacterial agent with activity against Gram-positive organisms for the treatment of ABSSSI and did not die of any cause up to Early Assessment.

Time frame: 48 to 72 hours after the start of study drug

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Contezolid AcefosamilEarly Clinical Response at the Early Assessment Visit (ITT Population)Responder102 Participants
Contezolid AcefosamilEarly Clinical Response at the Early Assessment Visit (ITT Population)Non-Responder3 Participants
Contezolid AcefosamilEarly Clinical Response at the Early Assessment Visit (ITT Population)Indeterminate26 Participants
LinezolidEarly Clinical Response at the Early Assessment Visit (ITT Population)Responder51 Participants
LinezolidEarly Clinical Response at the Early Assessment Visit (ITT Population)Non-Responder6 Participants
LinezolidEarly Clinical Response at the Early Assessment Visit (ITT Population)Indeterminate8 Participants
95% CI: [-14, 2.8]

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