CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 52 enrolled
Drug / intervention
514G3 (2 mg/kg) plus standard IV antibiotic treatment +5 morebiological
Likely dose
514G3 (2 mg/kg) plus standard IV antibiotic treatmentfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT02357966
NCT02357966Phase 2Completed

A Phase I-II Study of the Safety and Efficacy of a True Human Antibody, 514G3, in Subjects Hospitalized With Bacteremia Due to Staphylococcus Aureus

XBiotech, Inc.·interventional·Posted Feb 6, 2015·Updated Feb 9, 2026

In Brief

A Phase 2 clinical trial evaluating 514G3 (2 mg/kg) plus standard IV antibiotic treatment, 514G3 (10 mg/kg) plus standard IV antibiotic treatment, and 4 other interventions for Staphylococcus Aureus Bacteremia. Completed, enrolled 52 participants across 2 sites.

Detailed Summary

This study is a Phase I/II, double-blind, placebo-controlled trial investigating the True Human monoclonal antibody 514G3 in subjects hospitalized with Staphylococcus aureus bacteremia. Phase I involves dose escalation to evaluate potential toxicity and establish the recommended phase 2 dosage of 514G3. In Phase II (dose expansion), eligible subjects will be randomized at a ratio of 2:1 to receive either a single dose of 514G3 with standard IV antibiotic therapy or a single dose of placebo with standard IV antibiotic therapy, aiming to assess safety and tolerability. The trial aims to determine the safety, efficacy, and optimal dosage regimen of 514G3 in these hospitalized subjects.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited States
Collaborators--

Timeline

Phase 2CompletedFinished
201520162017201820192020202120222023202420252026
First PostedFeb 6, 2015
Enrollment StartMay 1, 2015
Primary CompletionDec 1, 2016
TodayJul 2, 2026
Enrollment to primary: 1.6 yearsPosted 11.4 years ago

Interventions

514G3 (2 mg/kg) plus standard IV antibiotic treatmentbiological

514G3 (10 mg/kg) plus standard IV antibiotic treatmentbiological

514G3 (40 mg/kg) plus standard IV antibiotic treatmentbiological

Placebo plus standard IV antibiotic treatmentother

Sterile isotonic formulation buffered at pH 6.2 - 6.5 plus standard IV antibiotic treatment

514G3 (40 mg/kg) plus standard IV antibiotic treatment: Phase IIbiological

A single dose of 514G3 plus standard IV antibiotic therapy

Placebo plus standard IV antibiotic treatment: Phase IIother

A single dose of placebo plus standard IV antibiotic therapy