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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/ct2/show/NCT04765384




Registration number
NCT04765384
Ethics application status
Date submitted
19/02/2021
Date registered
21/02/2021
Date last updated
8/11/2023

Titles & IDs
Public title
A Study of Ad26.COV2.S in Healthy Pregnant Participants (COVID-19)
Scientific title
An Open-label, Phase 2 Study to Evaluate the Safety, Reactogenicity, and Immunogenicity of Ad26.COV2.S in Healthy Pregnant Participants
Secondary ID [1] 0 0
2020-005330-14
Secondary ID [2] 0 0
CR108962
Universal Trial Number (UTN)
Trial acronym
HORIZON 1
Linked study record

Health condition
Health condition(s) or problem(s) studied:
COVID-19 Prevention 0 0
Condition category
Condition code
Infection 0 0 0 0
Other infectious diseases
Respiratory 0 0 0 0
Other respiratory disorders / diseases

Intervention/exposure
Study type
Interventional(has expanded access)
Description of intervention(s) / exposure
Other interventions - Ad26.COV2.S

Experimental: Groups 1-4: Ad26.COV2.S (One Dose) - 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.


Other interventions: Ad26.COV2.S
Participants will receive intramuscular (IM) injection of Ad26.COV2.S.

Intervention code [1] 0 0
Other interventions
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Number of Participants with Solicited Local Adverse Events (AEs) for 7 Days After Vaccination or Until Resolution
Timepoint [1] 0 0
7 days after vaccination or until resolution (Up to Day 8)
Primary outcome [2] 0 0
Number of Participants with Solicited Systemic AEs for 7 Days After Vaccination or Until Resolution
Timepoint [2] 0 0
7 days after vaccination or until resolution (Up to Day 8)
Primary outcome [3] 0 0
Number of Participants with Unsolicited AEs
Timepoint [3] 0 0
28 days after vaccination (Up to Day 29)
Primary outcome [4] 0 0
Number of Participants with Serious Adverse Events (SAEs)
Timepoint [4] 0 0
Up to 16 months
Primary outcome [5] 0 0
Number of Participants with Adverse Events of Special Interest (AESIs)
Timepoint [5] 0 0
Up to 16 months
Primary outcome [6] 0 0
Number of Participants with Medically-attended Adverse Events (MAAEs)
Timepoint [6] 0 0
6 months after vaccination (Up to Day 183)
Primary outcome [7] 0 0
Number of Participants with AEs leading to Discontinuation
Timepoint [7] 0 0
Up to 16 months
Primary outcome [8] 0 0
Serological Response to Vaccination as Measured by Enzyme-linked Immunosorbent Assay (ELISA) 28 Days After Vaccination
Timepoint [8] 0 0
28 days after vaccination (Day 29)
Secondary outcome [1] 0 0
Group 4: Number of Adult Participants with Solicited Local AEs for 7 Days After Booster Vaccination or Until Resolution
Timepoint [1] 0 0
Up to 7 days after booster vaccination or until resolution (up to 16 months)
Secondary outcome [2] 0 0
Group 4: Number of Adult Participants with Solicited Systemic AEs for 7 Days After Booster Vaccination or Until Resolution
Timepoint [2] 0 0
Up to 7 days after booster vaccination or until resolution (up to 16 months)
Secondary outcome [3] 0 0
Group 4: Number of Adult Participants with Unsolicited AEs For 28 Days After Booster Vaccination
Timepoint [3] 0 0
Up to 28 days after booster vaccination
Secondary outcome [4] 0 0
Group 4: Number of Adult Participants with SAEs Throughout the Study (From Booster Vaccination Until End of the Study [EOS])
Timepoint [4] 0 0
Up to 16 months
Secondary outcome [5] 0 0
Group 4: Number of Adult Participants with AESIs Throughout the Study (From Booster Vaccination Until EOS)
Timepoint [5] 0 0
Up to 16 months
Secondary outcome [6] 0 0
Group 4: Number of Adult Participants with MAAEs Until 6 Months After Booster Vaccination
Timepoint [6] 0 0
6 months after booster vaccination
Secondary outcome [7] 0 0
Number of Adult Participants with AEs leading to Discontinuation (During the Entire Study)
Timepoint [7] 0 0
Up to 16 months
Secondary outcome [8] 0 0
Number of Adult Participants with Pregnancy Outcomes
Timepoint [8] 0 0
Up to 6 months
Secondary outcome [9] 0 0
Number of Adult Participants with Pregnancy Related AEs
Timepoint [9] 0 0
Up to 6 months
Secondary outcome [10] 0 0
Serological Response to Vaccination as Measured by ELISA and/or Equivalent Assay, at all Blood Collection Timepoints in Adult Participants
Timepoint [10] 0 0
Up to 16 months
Secondary outcome [11] 0 0
Serological Response to Vaccination as Measured by Virus Neutralization Assay (VNA) Titers, 28 Days After Vaccination in Adult Participants
Timepoint [11] 0 0
28 days after vaccination (Day 29)
Secondary outcome [12] 0 0
Group 4: Serological Response to Booster Vaccination Measured by Binding (S-ELISA and/or Equivalent Assay) in Adult Participants
Timepoint [12] 0 0
Up to 16 months
Secondary outcome [13] 0 0
Group 4: Serological Response to Booster Vaccination Measured by Neutralizing (VNA) Antibody Titers in Adult Participants
Timepoint [13] 0 0
Up to 16 months
Secondary outcome [14] 0 0
Serological Response to Vaccination as Measured by ELISA and/or Equivalent Assay in Infants and Neonates
Timepoint [14] 0 0
From birth up to 2 and 6 months
Secondary outcome [15] 0 0
Serological Response to Vaccination as Measured by VNA Titers at Birth in Neonates and Infants
Timepoint [15] 0 0
At birth
Secondary outcome [16] 0 0
Number of Neonates and Infants with SAEs
Timepoint [16] 0 0
From birth up to 12 months
Secondary outcome [17] 0 0
Number of Neonates and Infants with AESIs
Timepoint [17] 0 0
From birth up to 12 months
Secondary outcome [18] 0 0
Number of Neonates and Infants with MAAEs
Timepoint [18] 0 0
From birth up to 6 months
Secondary outcome [19] 0 0
Number of Neonates and Infants with AEs leading to Study Discontinuation
Timepoint [19] 0 0
From birth up to 12 months
Secondary outcome [20] 0 0
Number of Neonates and Infants with or without any Complications, Anomalies and Deaths
Timepoint [20] 0 0
From birth up to 12 months

Eligibility
Key inclusion criteria
- If on medication for a condition, the medication dose must have been stable for at
least 4 weeks preceding vaccination

- Participant must be healthy as confirmed by medical history, physical examination,
vital signs, and obstetric history performed at Screening. Participant may have
underlying illnesses, as long as the symptoms and signs are medically controlled

- Participant will be at second or third trimester of pregnancy, that is, Week 16 to
Week 38 of gestation (inclusive), at the time of vaccination, based on ultrasound at
the time of screening (or not longer than 10 days prior to vaccination if performed
elsewhere)

- Participant agrees to not donate bone marrow, blood, and blood products from the first
study vaccine administration until 3 months after receiving the last dose of study
vaccine

- Participant must be willing to provide verifiable identification, has means to be
contacted and to contact the investigator during the study

- Participant either received their last COVID-19 vaccination with an
authorized/licensed COVID-19 vaccine (at least 4 months prior to first study
vaccination) or is COVID 19 vaccine-naïve
Minimum age
18 Years
Maximum age
45 Years
Sex
Females
Can healthy volunteers participate?
Yes
Key exclusion criteria
- Participants with medical or obstetric histories that put them at higher risk for
maternal or fetal complications (example, chronic pregnancy-related disorders, birth
defects or genetic conditions during previous pregnancy)

- Participant with abnormal pregnancy screening test (example, ultrasound fetal
abnormalities, maternal blood screen)

- Participant has a history of malignancy within 2 years before screening (exceptions
are squamous, basal cell carcinomas of the skin, carcinoma in situ of the cervix, or
malignancy, considered cured with minimal risk of recurrence)

- Participant has a known or suspected allergy or history of anaphylaxis or other
serious adverse reactions to vaccines or their excipients (including specifically the
excipients of the study vaccine)

- Participant has a history of any serious, chronic, or progressive neurological
disorders or seizures including Guillain-Barre syndrome, with the exception of febrile
seizures during childhood

- Participant has a positive diagnostic test result (polymerase chain reaction [PCR]
based viral ribonucleic acid [RNA] detection) severe acute respiratory syndrome
coronavirus-2 (SARS-CoV-2) infection at screening or Day 1 (if more than 4 days in
between)

- Participant has a history of thrombosis with thrombocytopenia syndrome (TTS),
including cerebral venous sinus thrombosis (CVST), or heparin-induced thrombocytopenia
(HIT)

- Participant has a history of capillary leak syndrome (CLS)

Study design
Purpose of the study
Prevention
Allocation to intervention
N/A
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?



Intervention assignment
Single group
Other design features
Phase
Phase 2
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Active, not recruiting
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
Sample size
Target
Accrual to date
Final
Recruitment in Australia
Recruitment state(s)
Recruitment outside Australia
Country [1] 0 0
United States of America
State/province [1] 0 0
Mississippi
Country [2] 0 0
United States of America
State/province [2] 0 0
Nebraska
Country [3] 0 0
United States of America
State/province [3] 0 0
New Mexico
Country [4] 0 0
United States of America
State/province [4] 0 0
Texas
Country [5] 0 0
Brazil
State/province [5] 0 0
Belo Horizonte
Country [6] 0 0
Brazil
State/province [6] 0 0
Criciúma
Country [7] 0 0
Brazil
State/province [7] 0 0
Marilia
Country [8] 0 0
Brazil
State/province [8] 0 0
Natal
Country [9] 0 0
Brazil
State/province [9] 0 0
Porto Alegre
Country [10] 0 0
Brazil
State/province [10] 0 0
Sao Bernardo do Campo
Country [11] 0 0
Brazil
State/province [11] 0 0
Sao Jose do Rio Preto
Country [12] 0 0
Brazil
State/province [12] 0 0
Sorocaba
Country [13] 0 0
Brazil
State/province [13] 0 0
São Paulo
Country [14] 0 0
South Africa
State/province [14] 0 0
Dennilton
Country [15] 0 0
South Africa
State/province [15] 0 0
Johannesburg
Country [16] 0 0
South Africa
State/province [16] 0 0
Mamelodi East
Country [17] 0 0
South Africa
State/province [17] 0 0
Soweto

Funding & Sponsors
Primary sponsor type
Commercial sector/Industry
Name
Janssen Vaccines & Prevention B.V.
Address
Country

Ethics approval
Ethics application status

Summary
Brief summary
The purpose of this study is to assess the safety and reactogenicity of Ad26.COV2.S
administered intramuscularly (IM) as a 1-dose schedule at the standard dose level in adult
participants during the second and/or third trimester of pregnancy and (potentially)
post-partum; to assess the humoral immune response in peripheral blood of adult participants
to Ad26.COV2.S administered IM as a 1-dose schedule during the second and/or third trimester
of pregnancy, 28 days after vaccination.
Trial website
https://clinicaltrials.gov/ct2/show/NCT04765384
Trial related presentations / publications
Public notes
This record is viewable in the ANZCTR as it had previously listed Australia and/or New Zealand as a recruitment site, however these sites have since been removed

Contacts
Principal investigator
Name 0 0
Janssen Vaccines & Prevention B.V. Clinical Trial
Address 0 0
Janssen Vaccines & Prevention B.V.
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for scientific queries



Summary Results

For IPD and results data, please see https://clinicaltrials.gov/ct2/show/NCT04765384