Clinical Trial Investigating the Safety and Immunogenicity of GBS6 in Pregnant Women With and Without HIV (PREPARE)

NCT ID: NCT05832502

Last Updated: 2024-02-16

Basic Information

• Recruitment Status: ACTIVE_NOT_RECRUITING
• Clinical Phase: PHASE2
• Total Enrollment: 300 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2022-10-14
• Study Completion Date: 2025-09-30

Brief Summary

A placebo controlled clinical trial investigating the safety and immunogenicity of GBS6 in pregnant women with and without human immunodeficiency virus (HIV) infection and their infants

Detailed Description

This Phase 2, randomised, placebo controlled, double blinded study will be the first evaluation of the investigational GBS6 in HIV-infected pregnant women. This study will enroll pregnant women with and without HIV to receive GBS6 or Placebo in order to provide an expanded safety and immunogenicity data set (for both pregnant women and their infants) and to support progression of the development of this vaccine.

Conditions

Group B Streptococcal Infection

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: QUADRUPLE

Study Groups

Placebo (saline) in HIV-uninfected pregnant woman

Placebo (saline control) administered intramuscularly by injecting 0.5 mL into the deltoid muscle

Group Type: PLACEBO_COMPARATOR

Placebo

Intervention Type: DRUG

Placebo (saline control) administered intramuscularly by injecting 0.5 mL into the deltoid muscle

GBS6 in HIV-uninfected pregnant woman

GBS6 administered intramuscularly by injecting 0.5 mL into the deltoid muscle

Group Type: ACTIVE_COMPARATOR

GBS6

Intervention Type: DRUG

The investigational products are GBS6 and placebo (saline control). The GBS6 dose will be GBS6 20mcg without AlPO4 (equivalent to 240 mcg/mL) 0.5mL dose or 20 mcg CPS/serotype).

Placebo (saline) in HIV-infected pregnant woman

Placebo (saline control) administered intramuscularly by injecting 0.5 mL into the deltoid muscle

Group Type: PLACEBO_COMPARATOR

Placebo

Intervention Type: DRUG

Placebo (saline control) administered intramuscularly by injecting 0.5 mL into the deltoid muscle

GBS6 in HIV-infected pregnant woman

GBS6 administered intramuscularly by injecting 0.5 mL into the deltoid muscle

Group Type: ACTIVE_COMPARATOR

GBS6

Intervention Type: DRUG

The investigational products are GBS6 and placebo (saline control). The GBS6 dose will be GBS6 20mcg without AlPO4 (equivalent to 240 mcg/mL) 0.5mL dose or 20 mcg CPS/serotype).

Interventions

GBS6

The investigational products are GBS6 and placebo (saline control). The GBS6 dose will be GBS6 20mcg without AlPO4 (equivalent to 240 mcg/mL) 0.5mL dose or 20 mcg CPS/serotype).

Intervention Type: DRUG

Placebo

Placebo (saline control) administered intramuscularly by injecting 0.5 mL into the deltoid muscle

Intervention Type: DRUG

Other Intervention Names

Hexavalent anti capsular polysaccharide (CPS) / cross reactive material 197 glycoconjugate

Eligibility Criteria

Inclusion Criteria

1. Age ≥ 18 to ≤ 40 years of age, inclusive at day of signing the ICF.

2. Pregnant at ≥ 27 0/7 to ≤35 6/7 gestation on the day of planned vaccination, verified by ultrasound scan (U/S).

3. Low risk, singleton pregnancy, as assessed by the study physician based on ultra-sound scan and previous obstetric history.

4. Documented negative HBV surface antigen, HCV antibody, and syphilis tests at screening.

5. Documented HIV test during pregnancy undertaken as per the national guidelines.

6. If HIV infected pregnant women, stable on ART for at least 3 months prior to study start

7. Determined by medical history, physical examination, screening laboratory assessment, and clinical judgment to be appropriate for inclusion in the study.

8. Receiving prenatal standard of care including HIV care if applicable at the clin-ics/physician offices/hospital network affiliated with the clinical study site.

9. Willing to give birth at Kawempe Specialised National Referral Hospital, or Kisenyi Health center IV, Uganda.

10. Willing and able to participate for the duration of the study visits and follow-up until 12-months post-delivery.

11. Willing and able to be contacted by telephone for the full duration of the study, and to give informed consent for their infant participant to participate in the study.

1. Parent(s) willing and able to comply with scheduled visits, investigational plan, laboratory tests, and other study procedures.

Exclusion Criteria

Any of the following:

1. Investigator site staff members directly involved in the conduct of the study and their family members, site staff members otherwise supervised by the investigator, or participants who are Pfizer employees, including their family members, directly involved in the conduct of the study.

2. Participants whose unborn baby have been fathered by investigational site staff members directly involved in the conduct of the study or their family members, site staff members otherwise supervised by the investigator, or Pfizer employees directly involved in the conduct of the study.

3. Participation in other studies involving investigational drug(s), vaccines, or medical devices within 28 days prior to study entry and/or during study participation.

4. Previous vaccination with any licensed or investigational GBS vaccine.

5. History of severe adverse reaction associated with a vaccine and/or severe allergic reaction (e.g., anaphylaxis) to any component of the investigational product.

6. History of microbiologically proven invasive disease caused by GBS, or history of an infant with GBS disease.

7. Current alcohol abuse or illicit drug use.

8. Body mass index (BMI) of ≥40 kg/m2 at the time of the screening visit.

9. Clinical history of primary genital herpes simplex virus (HSV) infection during the current pregnancy.

10. A prior history of or current pregnancy complications or abnormalities that will increase the risk associated with the participant's participation in, and completion of, the study, including but not limited to the following (refer to the SRM) for further details):

1. Gestational hypertension or preeclampsia eclampsia

2. Placental abnormality

3. Polyhydramnios or oligohydramnios

4. Significant bleeding or blood clotting disorder

5. Gestational diabetes

6. Any signs of premature labour with the current pregnancy

11. Prior late stillbirth (defined as loss of pregnancy at any time after 28 weeks gestation) or neonatal death (defined as death of an infant within the first 28 days of life), prior low birth weight baby (defined as infant <2500 g) or premature delivery (defined as delivery before 37 0/7 weeks gestation), prior history of at least 3 miscarriages, prior pregnancies numbering greater than 5, or previous infant with a known or suspected genetic disorder or major congenital anomaly

12. Confirmed GBS bacteriuria during the current pregnancy

13. Major illness of the mother (outside of HIV serostatus) or conditions of the foetus that, in the investigator's judgment, will substantially increase the risk associated with the participant's participation in, and completion of, the study or could preclude the evaluation of the participant's response, including but not limited to the following (refer to the SRM) for further details):

g. hypertension requiring treatment h. heart disease i. lung disease j. neurological disorders including a history of epilepsy or recurrent afebrile seizures k. kidney disease l. liver disease m. haematological disorders (including sickle cell disease) n. severe anaemia (less than 7.0g/dL) o. significant bleeding or blood clotting disorder p. endocrine disorders including known diabetes mellitus

14. Participants with known or suspected immunodeficiency (outside of HIV positive sero-status).

15. Participants who receive treatment with immunosuppressive therapy including cytotoxic agents or systemic corticosteroids, e.g., for cancer or an autoimmune disease, or planned receipt through the postvaccination blood draw. Inhaled/nebulised, intra articular, intra-bursal, or topical (skin or eyes) corticosteroids are permitted.

16. Receipt of blood/plasma products or immunoglobulin, from 60 days before investigational product administration, or planned receipt through delivery.

17. Known to be Rhesus Negative

18. Psychiatric condition including recent (within the last year) or active suicidal ideation or behaviour or laboratory abnormalities that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the participant inappropriate for entry into this study.

19. Deprived of freedom by an administrative or court order, or in an emergency setting, or hospitalised involuntarily.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 40 Years
• Eligible Sex: FEMALE
• Accepts Healthy Volunteers: Yes

Sponsors

MU-JHU CARE

OTHER

Sponsor Role: collaborator

Pfizer

INDUSTRY

Sponsor Role: collaborator

St George's, University of London

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Musa sekikubo, Prof

Role: PRINCIPAL_INVESTIGATOR

Makerere University - John Hopkins University

Locations

Makerere University, John Hopkins University

Kawempe, , Uganda

Countries

Uganda

Provided Documents

Document Type: Study Protocol

View Document

Other Identifiers

2020.0317

Identifier Type: -

Identifier Source: org_study_id