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A Phase 1 Study to Evaluate the Safety and Immunogenicity of GC4006A in Healthy Adults

A Phase 1, Randomized, Double-blind, Dose-Escalation, Placebo-Controlled, Multicenter Clinical Trial to Evaluate the Safety and Immunogenicity of the COVID-19 Preventive Vaccine 'GC4006A' in Healthy Adults Aged 19 to 64 Years

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07728396
Enrollment
72
Registered
2026-07-27
Start date
2026-01-28
Completion date
2027-05-01
Last updated
2026-07-27

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

Conditions

COVID - 19

Brief summary

A Phase 1, Randomized, Double-blind, Dose-Escalation, Placebo-Controlled, Multicenter Clinical Trial to Evaluate the Safety and Immunogenicity of the COVID-19 Preventive Vaccine 'GC4006A' in Healthy Adults Aged 19 to 64 Years

Interventions

BIOLOGICALGC4006A

administered as a single dose via Intramuscular injection.

DRUGNormal Saline

Matching placebo administered as a single dose via Intramuscular injection.

Sponsors

GC Biopharma Corp
Lead SponsorINDUSTRY

Study design

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

Eligibility

Sex/Gender
ALL
Age
19 Years to 64 Years
Healthy volunteers
Yes

Inclusion criteria

* Age 19-64 with written informed consent * ≥16 weeks since last COVID-19 vaccination

Exclusion criteria

* Positive SARS-CoV-2 test (RT-PCR/Rapid Antigen) at screening or randomization * \<16 weeks since COVID-19 diagnosis * History of serious adverse event, allergy, or hypersensitivity to the vaccines * Pregnant or lactating women

Design outcomes

Primary

MeasureTime frame
Solicited local and systemic AEsFrom baseline up to 7 days
Acute adverse eventsFrom baseline up to 30 minutes
Unsolicited adverse AEsFrom baseline up to 28 days

Secondary

MeasureTime frameDescription
Serious adverse events (SAE), Adverse events of special interest (AESI), Medically Attended Adverse Events (MAAE)From baseline up to week 52
Clinically significant findings in vital signs, laboratory tests, 12-lead electrocardiograms, and physical examinationsFrom baseline up to week 52
6. Immunogenicity response (SRR, GMT, GMFR for neutralizing antibodies; SRR, GMC, GMFR for binding antibodies)From baseline up to week 52SRR (Seroresponse rate), GMT (Geometric mean titer), GMFR (Geometric mean fold rise), GMC (Geometric mean concentration)

Countries

South Korea

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 28, 2026