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Study in Adults to Assess the Safety and Efficacy of Inhaled IBIO123, for Post-exposure Prophylaxis of COVID-19

A Phase 2, Randomized, Double-blind, Multicentre, Placebo-controlled Study in Adults to Assess the Safety and Efficacy of Inhaled IBIO123, for Post-exposure Prophylaxis of COVID-19

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05639166
Enrollment
200
Registered
2022-12-06
Start date
2023-02-18
Completion date
2023-05-16
Last updated
2023-05-22

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

Conditions

COVID-19

Keywords

IBIO, IBIO123, Prophylaxis, Inhalation, monoclonal antibodies, Prevention

Brief summary

This is a Phase 2, randomized, double-blind, multicentre, placebo-controlled study in adults to assess the safety and efficacy of inhaled IBIO123, for post-exposure prophylaxis of COVID-19. This study aims to evaluate the efficacy and the safety of IBIO123 and the prophylaxis effect of IBIO123 in participants exposed to COVID-19 in the setting of current and uninterrupted household contacts.

Detailed description

This is a randomized, double-blind, multicentre, placebo-controlled study eligible patients will be randomized in a 1:1 ratio to receive either 10mg of IBIO123 or matching vehicle (placebo). IBIO123 will be administered by inhalation via an Aerogen Ultra mesh nebulizer according to the manufacturer's recommendation. Patients will be followed up for a total period of 14 days after the administration of study intervention to detect an infection to SARS-CoV-2. This study will enroll a total of 140 participants (70 participants on IBIO123 & 70 participants on Placebo).

Interventions

BIOLOGICALIBIO123

IBIO123 10 mg

OTHERPlacebo

Matching Placebo

Sponsors

Immune Biosolutions Inc
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

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

Inclusion criteria

1. Are ≥18 years of age at the time of randomization 2. Subject has a household contact with a confirmed COVID-19 cohabiting individual as subject. Initial diagnosis of the COVID-19 positive individual has been within 3 days of screening. COVID-19 positive result (PCR or Antigen) must have been performed by an accredited lab or medical professional. Current and uninterrupted household contacts were defined as family members or close relatives who had unprotected contact with the index case. 3. Subject must have a negative result with the study provided rapid antigen test at baseline and be COVID-19 symptom free. 4. Are men or non-pregnant women. Reproductive and Contraceptive agreements and guidance is provided in Appendix 2. Contraceptive use by men or women should be consistent with local regulations for those participating in clinical studies. 5. Understand and agree to comply with planned study procedures 6. Agree to the collection of nasopharyngeal swabs 7. The participant or legally authorized representative gives signed informed consent as described in Section 10.1.1.2 which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol.

Exclusion criteria

1. A positive COVID-19 result (PCR or antigen test) within 30 days of screening. 2. Presence of typical COVID-19 symptoms which cannot be explained by another underlying condition (fever \>38°C, Oxygen saturation (SpO2) below 93%, dyspnea, difficulty breathing, chills, ageusia, anosmia, cough, myalgia) in the past 48 hours prior to screening. 3. Hypersensitivity to any component of IBIO123 4. Participants who have been previously administered IBIO123. 5. Have received treatment with a SARS-CoV-2 specific monoclonal antibody 6. Have participated, within the last 30 days, in a clinical study involving an investigational intervention. If the previous investigational intervention has a long half-life, 5 half-lives or 30 days, whichever is longer, should have passed. 7. Are pregnant or breast feeding 8. Are investigator site personnel directly affiliated with this study.

Design outcomes

Primary

MeasureTime frameDescription
Characterize the effect of IBIO123 compared to placebo on laboratory-confirmed COVID-19 infections between baseline and Day 14From Baseline to Day 14• Proportion of participants who had a laboratory-confirmed COVID-19 infection between baseline and Day 14

Secondary

MeasureTime frameDescription
Characterize the effect of IBIO123 compared to placebo on laboratory-confirmed COVID-19 asymptomatic infections between baseline and Day 7From Baseline to Day 7Proportion of participants who had a laboratory-confirmed asymptomatic COVID-19 infection between baseline and Day 7
Characterize the effect of IBIO123 compared to placebo on laboratory-confirmed COVID-19 asymptomatic infections between baseline and Day 14From Baseline to Day 14Proportion of participants who had a laboratory-confirmed asymptomatic COVID-19 infection between baseline and Day 14
Characterize the effect of IBIO123 compared to placebo on laboratory-confirmed COVID-19 infections between baseline and Day 7From Baseline to Day 7Proportion of participants who had a laboratory-confirmed COVID-19 infection between baseline and Day 7
Characterize the effect of IBIO123 compared to placebo on SARS-CoV-2 related symptomsFrom Baseline to Day 14* Time to symptom onset * Proportion of participants demonstrating symptom resolution on Days 7 & 14. * Proportion of participants demonstrating Mild, Moderate and Severe symptoms between baseline to Day 7 and day 14
Characterize the effect of IBIO123 compared to placebo on safety and tolerabilityFrom Baseline to Day 14Safety assessments such as adverse events (AEs) and Serious adverse events (SAEs)
Characterize the effect of IBIO123 compared to placebo on overall participant clinical statusFrom Baseline to Day 14Proportion (percentage) of participants who experience these events by Day 14 * Hospitalisation * Mortality

Countries

South Africa, Ukraine

Outcome results

None listed

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