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Study to Evaluate STI-1499 (COVI-GUARD) in Patients With Moderate COVID-19

A Randomized, Placebo-controlled Study to Evaluate the Safety, Pharmacokinetics and Efficacy of a Single Dose of STI-1499 (COVI-GUARD™) in Hospitalized Patients With Moderate COVID-19

Status
Withdrawn
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04454398
Enrollment
0
Registered
2020-07-01
Start date
2020-09-30
Completion date
2021-01-31
Last updated
2021-01-08

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

Conditions

Covid-19

Brief summary

Randomized, placebo-controlled study to evaluate the safety, pharmacokinetics and efficacy of a single dose of STI-1499 (COVI-GUARD™) in hospitalized patients with moderate COVID-19

Detailed description

This study is a randomized, double-blind, placebo-controlled study to evaluate the safety, pharmacokinetics and efficacy of a single dose of STI-1499 (COVI-GUARD™), a COVID-19 targeting monoclonal antibody, in hospitalized patients with moderate COVID-19. Four dose levels will be tested: 10 mg, 30 mg, 100 mg, and 200 mg.

Interventions

OTHERStandard of Care

Standard of Care as determined by the Investigator

DRUGPlacebo

Diluent

BIOLOGICALCOVI-GUARD

COVI-GUARD (STI-1499) is a monoclonal antibody which targets the COVID-19 spike protein

Sponsors

Sorrento Therapeutics, Inc.
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

* Evidence of moderate COVID-19, diagnosed standard RT-PCR assay or equivalent testing * Willing and able to comply with study procedures and follow-up visits * Subject or family member/caregiver must have provided written informed consent which includes signing the institutional review board approved consent form prior to participating in any study related activity. However, if obtaining written informed consent is not possible, other procedures as provided in the March 27th, 2020 FDA Guidance on Conduct of Clinical Trials of Medical Products during COVID-19 Pandemic, Question 10, may be used.

Exclusion criteria

* Clinical signs indicative of severe COVID-19 * Rapidly progressive COVID-19 which is likely to progress to severe within 24 hours * Documented infection other than COVID-19 * Any medical condition that, in the Investigator's opinion, could adversely impact safety * Pregnant or lactating women * Has participated, or is participating, in a clinical research study evaluating COVID-19 convalescent plasma, monoclonal antibodies (mAbs) against SARS-CoV-2, or intravenous immunoglobulin (IVIG) within 3 months or less than 5 half-lives of the investigational product (whichever is longer) prior to the screening visit. Note: Participants who have been prescribed hydroxychloroquine or chloroquine with or without azithromycin or other approved products for the off-label treatment of COVID-19 prior to study enrollment may be included and may continue to receive these agents so long as the dose remains stable. Additionally, any approved or authorized treatment (e.g., remdesivir, dexamethasone or treatments approved under an Emergency Use Authorization) is allowed.

Design outcomes

Primary

MeasureTime frameDescription
Cytokine levelsRandomization through study completion through Day 60Levels of cytokines including EGF, IFNγ, IL-1β, IL-6, IL-8, IL-10, and TNFα
Incidence of laboratory abnormalities (safety)Randomization through study completion through Day 60Clinically meaningful laboratory abnormalities
SARS-CoV-2 viral load as assessed using various sample typesRandomization through study completion through Day 60Plasma samples and salivary samples are taken to correlate viral load with nasopharyngeal testing at various timepoints; stool or rectal swab samples are taken if possible for additional virologic assessments
Time to hospitalization, treatment, ICU admission, and discharge from ICU and/or hospitalRandomization up to study completion through Day 60Time from onset of COVID-19 symptoms to hospitalization and to treatment on Day 1, and if applicable, time to ICU admission, discharge from ICU and discharge from hospital
Anti-drug antibodiesRandomization through study completion through Day 60Presence and levels of anti-drug antibodies (ADA) directed to COVI-GUARD
Incidence of adverse events (safety)Randomization through study completion through Day 60Types, frequencies, and severities of adverse events and their relationships to COVI-GUARD
Incidence of treatment-emergent adverse events (safety)Randomization through study completion through Day 60Types, frequencies, and severities of treatment-emergent adverse events and their relationships to COVI-GUARD
Incidence of serious adverse events (safety)Randomization through study completion through Day 60Types, frequencies, and severities of serious adverse events and their relationships to COVI-GUARD
All-cause mortality at 29 and 60 daysRandomization through Day 29 and Day 60All-cause mortality at 29 and 60 days
Incidence of dose-limiting toxicities (safety)Randomization through study completion through Day 60Dose-limiting toxicities, particularly presence of acute or delayed hypersensitivity reactions

Secondary

MeasureTime frameDescription
Cmax of COVI-GUARD (PK)Randomization through study completion through Day 60Maximum observed serum concentration (Cmax) of COVI-GUARD
t½ of COVI-GUARD (PK)Randomization through study completion through Day 60Apparent serum terminal elimination half life (t½) of COVI-GUARD
Tmax of COVI-GUARD (PK)Randomization through study completion through Day 60Time to Cmax (Tmax) of COVI-GUARD
AUC of COVI-GUARD (PK)Randomization through study completion through Day 60Area under the serum concentration-time curve (AUC) of COVI-GUARD

Outcome results

None listed

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