A Human Monoclonal Antibody Against Staphylococcus Aureus Alpha Toxin in Mechanically Ventilated Adult Subjects - 2 (SAATELLITE-2)

A Phase 3, Randomized, Double-blind, Placebo-controlled, Single-dose Study to Evaluate the Efficacy and Safety of Suvratoxumab in Mechanically Ventilated Adults and Adolescents for the Prevention of Nosocomial Pneumonia

Clinical trial looking at safety and efficacy of suvratoxumab in prevention of pneumonia caused by Staphylococcus aureus in high-risk patients

Study Overview

• Status: Terminated
• Conditions: Staphylococcus Aureus; Ventilator Associated Pneumonia
• Intervention / Treatment: Biological: Suvratoxumab; Drug: Placebo

Detailed Description

This is a Phase 3, randomized, double-blind, placebo-controlled study evaluating the efficacy of a single IV dose of suvratoxumab in mechanically ventilated subjects in the ICU who are at high risk for S. aureus infections and who are currently free of active S. aureus-related disease but are colonized with S. aureus in the LRT.

• Study Type: Interventional
• Enrollment (Actual): 24
• Phase: Phase 3

Contacts and Locations

Study Locations

• Belgium
  • Haine-Saint-Paul, Belgium
    • Research Site Bel03
  • Ottignies, Belgium
    • Research Site Bel02
  • Yvoir, Belgium
    • Research Site Bel05
• France
  • Argenteuil, France
    • Research Site Fra05
  • La Roche-sur-Yon, France
    • Research Site Fra16
  • Le Mans, France
    • Research Site Fra10
  • Lille, France
    • Research Site Fra08
  • Limoges, France, 87042
    • Fra06
  • Orléans, France
    • Research Site Fra07
  • Pierre-Bénite, France
    • Research Site Fra15
  • Tours, France
    • Research Site Fra12
  • Trévenans, France
    • Research Site Fra03
• Greece
  • Larissa, Greece
    • Research Site GRC01
• Israel
  • Haifa, Israel
    • Research Site ISR03
  • H̱olon, Israel
    • Research Site ISR05
  • Ramat Gan, Israel
    • Research Site ISR01
  • Tsefat, Israel
    • Research Site ISR06
• Netherlands
  • Enschede, Netherlands
    • Research Site NLD01
  • Heerlen, Netherlands
    • Research Site NLD03
  • Utrecht, Netherlands
    • Research Site NLD02
• Spain
  • Barcelona, Spain
    • Research Site SPA04
  • Córdoba, Spain
    • Research Site SPA01
  • Madrid, Spain
    • Research Site SPA07
  • Santander, Spain
    • Research Site SPA08
  • Santiago De Compostela, Spain
    • Research Site SPA06
  • Terrassa, Spain
    • Research Site SPA03
  • Valence, Spain
    • Research Site SPA05

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 8 years to 61 years (Child, Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Colonized with Staphylococcus aureus;
2. Expected to require prolonged intubation and mechanical ventilation, without any evidence of active pneumonia.

Exclusion Criteria:

1. Staphylococcal disease at randomisation;
2. Lung injury score consistent with pneumonia;
3. Chronic tracheostomy patients;
4. The study subject is moribund
5. Receipt of anti- S. aureus systemic antibiotics
6. Active pulmonary disease

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: AR-320 (Suvratoxumab); Participants will receive a single intravenous (IV) dose of suvratoxumab on Day 0 of the study.	Biological: Suvratoxumab; Monoclonal antibody; Other Names: AR-320; MEDI4893
Placebo Comparator: Placebo; Participants will receive a single IV dose of placebo to survatoxumab on Day 0 of the study.	Drug: Placebo; Placebo contains only excipients

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Incidence of nosocomial all-cause pneumonia through 30 days post dose	All-cause pneumonia is based on clinical, radiographic, and microbiologic criteria. The percent reduction of the incidence of (% of patients with) nosocomial all-cause pneumonia, regardless of identified etiology, following administration of study drug through 30 days post dose	30 days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of participants with TEAE at 30 days	Treatment emergent adverse events (TEAE) are those adverse events (AEs, any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship) that occur or worsen during the treatment period, i.e., after the administration of study drug, through 30 days post dose	30 days
Number of participants with TESAE at 90 days	Treatment emergent serious adverse events (TESAE) are serious adverse events (SAEs, AEs resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life threatening experience; persistent or significant disability/incapacity; congenital anomaly) that, as TEAEs, are present at baseline that worsened in intensity after administration of study drug or events absent at baseline that emerged after administration of study drug, through 90 days	90 days
Number of participants with TEAESI at 90 days	A TEAE of special interest (TEAESI) is an AE of scientific and medical interest specific to understanding of the study drug and may have required close monitoring and rapid communication by the investigator to the sponsor. An AESI may have been serious or non-serious. The time-frame is 90 days.	90 days
Number of Participants with Nosocomial all-cause pneumonia or death through 30 days post dose	All-cause pneumonia is based on clinical, radiographic, and microbiologic criteria. The percent reduction of the incidence of (% of patients with) nosocomial all-cause pneumonia, regardless of cause, or death following administration of study drug through 30 days post dose	30 days
Number of Participants with Nosocomial S. aureus pneumonia through 30 days post dose	S. aureus pneumonia is based on clinical, radiographic, and microbiologic criteria. The percent reduction of the incidence of (% of patients with) nosocomial S. aureus pneumonia following administration of study drug through 30 days post dose	30 days
Number of Participants with Nosocomial S. aureus pneumonia through 90 days post dose	S. aureus pneumonia is based on clinical, radiographic, and microbiologic criteria. The percent reduction of the incidence of (% of patients with) nosocomial S. aureus pneumonia following administration of study drug through 90 days post dose	90 days
Suvratoxumab Maximum Observed Serum Concentration (Cmax)	Maximum Observed Serum Concentration (Cmax) of suvratoxumab at Day 0 (Pre-dose, end of the infusion, 8 and 24 hours post dose), and on Days 7, 30 and 90. At Day 90 only for a subset of patients.	90 days
Suvratoxumab Area under the Plasma Concentration-Time Curve (AUC)	the area under the plasma concentration-time curve (AUC) will be measured from time 0 to Day 30 (AUC0-30), in all study subjects, and AUC from time 0 to Day 90 (AUC0-90) for a subset of subjects	90 days
Number of Participants With Positive Anti-Drug Antibodies (ADA) Titer to Suvratoxumab	The incidence of (number of patients with) positive anti-drug antibodies (ADA) titer to suvratoxumab will be assessed and summarized by number and percentage of subjects that are ADA positive at predose, Day 30 in all subjects and Day 90 in a subset of patients.	90 days

Collaborators and Investigators

• Sponsor: Aridis Pharmaceuticals, Inc.
• Investigators: Principal Investigator: Francois, MD, Centre Hospitalier Universitaire (CHU) de Limoges

Study record dates

Study Major Dates

• Study Start (Actual): September 2, 2022
• Primary Completion (Actual): July 8, 2024
• Study Completion (Actual): July 8, 2024

Study Registration Dates

• First Submitted: April 1, 2022
• First Submitted That Met QC Criteria: April 15, 2022
• First Posted (Actual): April 18, 2022

Study Record Updates

• Last Update Posted (Actual): March 25, 2025
• Last Update Submitted That Met QC Criteria: March 20, 2025
• Last Verified: January 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Healthcare-Associated Pneumonia; Pathologic Processes; Disease Attributes; Respiratory Tract Infections; Infections; Respiratory Tract Diseases; Lung Diseases; Cross Infection; Iatrogenic Disease; Pneumonia; Pneumonia, Ventilator-Associated
• Other Study ID Numbers: AR-320-003; SAATELLITE-2 (Other Identifier: COMBACTE-NET)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No