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A Phase 1, First-In-Human Study of the Investigational COVID-19 Vaccine SC-Ad6-1 in Healthy Volunteers

A Phase 1, First-In-Human, Open-label, Single Ascending Dose and Multidose Study to Assess the Safety, Reactogenicity, and Immunogenicity of the Adenovirus Vector SARS-CoV-2 Investigational Product SC-Ad6-1 Given Via Intramuscular, Intranasal or Inhaled Administration in Healthy Volunteers

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04839042
Enrollment
196
Registered
2021-04-09
Start date
2021-06-28
Completion date
2025-03-04
Last updated
2025-08-21

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

Conditions

Covid19

Brief summary

This is a single-centre, open-label, first-in-human, single ascending dose and multiple dose study to assess the safety, reactogenicity, and immunogenicity of the SC-Ad6-1 investigational product when administered via the intramuscular (IM), intranasal (IN) or inhaled (IH) route in healthy volunteers.

Interventions

BIOLOGICALSC-Ad6-1

SC-Ad6-1, I.M., single or multiple-dose

Sponsors

Moat Biotechnology Corporation
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
Yes

Inclusion criteria

Key Inclusion Criteria: * Adult males and females, 18 to 60 years of age (inclusive) * Body mass index ≥ 18.0 and ≤ 32.0 kg/m2, with a body weight ≥ 50 kg at screening * Must have been fully vaccinated against COVID-19 and received last dose not less than 3 months prior to Day 1 (High Dose #3 I.M. and I.N. booster arms only), not less than 5 months prior to Day 1 (High Dose #4 I.N. booster arm only) and not less than 12 months prior to Day 1 (I.H. booster arms and I.N or I.H. multiple dose booster arms only) Key

Exclusion criteria

* History or presence of significant cardiovascular, pulmonary, hepatic, renal, haematological, gastrointestinal, endocrine, immunologic, dermatologic or neurological disease * History of chronic respiratory disorders including asthma, emphysema, interstitial lung disease, pulmonary hypertension, recurrent pneumonia, or recent (≤14 days prior to Screening) or ongoing respiratory tract infection * History of thrombosis (e.g., deep vein thrombosis, pulmonary embolism, etc.), any coagulation dysregulation disorder, or a history of thrombosis noted in immediate family members * History of any neurological disorders or seizures including Guillain-Barre syndrome, with the exception of febrile seizures during childhood * Known previous infection with SARS-CoV-2 or presence of antibodies against SARS-CoV-2 or a positive SARS-CoV-2 PCR test (non-booster arms only) * Any history of malignant disease ≤5 years prior to registration * History of clinically relevant immunosuppression from, but not limited to, immunodeficiency conditions such as common variable hypogammaglobulinemia

Design outcomes

Primary

MeasureTime frameDescription
Number of participants with solicited local and systemic adverse events for 7 days Following Each Dose7 days following each doseSolicited local adverse events are defined as pain, redness and swelling at the site of dose administration for the intramuscular arms, are defined as stuffy nose, runny nose, nasal discomfort, loss of smell, sore or scratchy throat for the intranasal arms and are defined as stuffy nose, runny nose, dry mouth, mouth sores, sore or scratchy throat and cough for the inhalation arms. Solicited systemic adverse events for all routes of administration are defined as fever, headache, muscle pain, joint pain, fatigue, nausea or vomiting, and chills.
Incidence and severity of adverse events (AEs), including withdrawals due to safety or tolerability reasonsUp to 106 days following first dose
Humoral response to SARS-CoV-2 as measured by neutralizing antibodies using wild-type virus assayUp to 106 days following first dose

Secondary

MeasureTime frame
Humoral response to SARS-CoV-2 as measured by serum IgG and IgA antibodies to the SARS-CoV-2 spike protein (ELISA)Up to 106 days following first dose
Measurement of adenovirus 6 (Ad6) neutralizing antibodies (anti-drug antibodies (ADA))Up to 106 days following first dose
Humoral response to SARS-CoV-2 as measured by mucosal IgA antibodies to the SARS-CoV-2 spike protein (ELISA) and total mucosal IgAUp to 106 days following first dose
Measurement of cytokine-producing T cells specific for the SARS-CoV-2 spike protein (ELISpot)Up to 106 days following first dose

Countries

Australia

Outcome results

None listed

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