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Virus Therapy

COVID-19 Vaccine for COVID-19 (HORIZON 1 Trial)

Phase 2
Waitlist Available
Research Sponsored by Janssen Vaccines & Prevention B.V.
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Be between 18 and 65 years old
Timeline
Screening 3 weeks
Treatment Varies
Follow Up from birth up to 2 and 6 months
Awards & highlights

HORIZON 1 Trial Summary

This trial will study the safety and effectiveness of a single dose of Ad26.COV2.S given to pregnant women in their second or third trimester, and potentially post-partum. Researchers will also study the immune response of these women 28 days after vaccination.

Eligible Conditions
  • Coronavirus Prevention

HORIZON 1 Trial Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~from birth up to 2 and 6 months
This trial's timeline: 3 weeks for screening, Varies for treatment, and from birth up to 2 and 6 months for reporting.

Treatment Details

Study Objectives

Outcome measures can provide a clearer picture of what you can expect from a treatment.
Primary outcome measures
Number of Participants with AEs leading to Discontinuation
Number of Participants with Adverse Events of Special Interest (AESIs)
Number of Participants with Medically-attended Adverse Events (MAAEs)
+5 more
Secondary outcome measures
Group 4: Number of Adult Participants with AESIs Throughout the Study (From Booster Vaccination Until EOS)
Group 4: Number of Adult Participants with MAAEs Until 6 Months After Booster Vaccination
Group 4: Number of Adult Participants with SAEs Throughout the Study (From Booster Vaccination Until End of the Study [EOS])
+17 more

Side effects data

From 2023 Phase 3 trial • 44325 Patients • NCT04505722
2%
Headache
2%
Chills
1%
Fatigue
100%
80%
60%
40%
20%
0%
Study treatment Arm
Ad26.COV2.S
Placebo

HORIZON 1 Trial Design

1Treatment groups
Experimental Treatment
Group I: Groups 1-4: Ad26.COV2.S (One Dose)Experimental Treatment1 Intervention
Participants who are previously vaccinated (Group 1-3) and participants who are vaccine naïve (Group 4) will receive single dose of Ad26.COV2.S vaccine at standard dose level on Day 1. Participants from group 4 who are no longer pregnant may receive single booster dose of Ad26.COV2.S vaccine at standard dose level.
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Ad26.COV2.S
2021
Completed Phase 3
~84050

Find a Location

Who is running the clinical trial?

Janssen Vaccines & Prevention B.V.Lead Sponsor
55 Previous Clinical Trials
1,134,215 Total Patients Enrolled
Janssen Vaccines & Prevention B.V. Clinical TrialStudy DirectorJanssen Vaccines & Prevention B.V.
47 Previous Clinical Trials
135,458 Total Patients Enrolled

Media Library

Ad26.COV2.S (Virus Therapy) Clinical Trial Eligibility Overview. Trial Name: NCT04765384 — Phase 2
Coronavirus Prevention Research Study Groups: Groups 1-4: Ad26.COV2.S (One Dose)
Coronavirus Prevention Clinical Trial 2023: Ad26.COV2.S Highlights & Side Effects. Trial Name: NCT04765384 — Phase 2
Ad26.COV2.S (Virus Therapy) 2023 Treatment Timeline for Medical Study. Trial Name: NCT04765384 — Phase 2
~26 spots leftby May 2025