A Follow-up Trial of GBS-NN/NN2 Vaccine in Healthy Pregnant Women

Phase 3Active Not RecruitingNCT06592586

Minervax ApS137 enrolled

Overview

The main objective of the study is to evaluate the persistence of the immunoglobulin G (IgG) antibody responses, specific to Alpha-like protein CN (AlpCN), Ribosomal Protein N (RibN), Alpha-like protein 1N (Alp1N), and Alpha-like protein 2 and 3 (Alp2-3N), after a primary vaccination with GBS-NN/NN2 in all participants.

Study Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

PREVENTION

Masking

NONE

Enrollment

137

Conditions

Streptococcus Agalactiae Infection Neonatal Sepsis Pneumonia Meningitis Neonatal Infection Gram-Positive Bacterial Infections

Eligibility

Sex: FEMALEMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Participant living in Denmark or South Africa who has participated in Trial MVX0004 (NCT05154578) and has received at least 1 dose of the GBS-NN/NN2 vaccine. * Participant who is able to read and understand and capable of giving personal signed informed consent. * Participant who is willing and able to comply with scheduled visits, the investigational plan, and other trial procedures. * Participant who is granting access to their trial-related medical records and to their trial materials from Trials MVX0004. * Participant who is expected to be available for the duration of the trial and who can be contacted by telephone during trial participation. Exclusion Criteria: * Any personnel involved in the conduct of the trial (and their family members), including, but not limited to, site staff members, MinervaX employees, and any vendor or contract research organisation (CRO) employees. * Participant with confirmed Group B Streptococcus (GBS) infection since participation in Trial MVX0004. * Participant with any psychiatric condition, including recent (within the past year) active suicidal ideation/behaviour that may increase the risk of trial participation or, in the investigator's judgement, make the participant unsuitable for participation in the trial. * Participant who participated in other trials involving investigational drug(s) or devices within 28 days prior to trial entry, and/or are participating in other trials involving investigational drug(s) or devices at trial entry, or plan to (continue to) participate in other trials involving investigational drug(s) or devices during this trial. * Participant with known or suspected immunodeficiency or cancer or a family history of congenital or hereditary immunodeficiency. Note: Human immunodeficiency virus (HIV) infection is not an exclusion criterion if HIV viral load is ≤1000 copies/mL and the participant has been on antiretroviral therapy for at least 3 months prior to screening and is clinically stable. * Participant receiving chronic administration (defined as more than 14 continuous days) of immunosuppressants or other immune-modifying drugs within 6 months prior to trial entry. An immunosuppressive dose of glucocorticoid will be defined as a systemic dose ≥10 mg of prednisone per day or equivalent. The use of topical, inhaled, and nasal glucocorticoids will be permitted. * Participant who received blood, blood products, plasma derivatives, or any immunoglobulin preparations in the 12 weeks prior to trial entry or is planning to receive such products during this trial. * Participant with current or history of drug or alcohol abuse, as judged by the investigator. * Participant who received any marketed or investigational GBS vaccines (other than GBS-NN/NN2 in the MVX0004 Trial) or who is planning to receive any marketed or investigational (other than GBS NN/NN2) GBS vaccines during this trial.

Locations (6)

Hvidovre Hospital - Department Of Obstetrics And Gynaecology

Copenhagen, Capital Region, Denmark

Aarhus Universitetshospital

Aarhus N, Central Jutland, Denmark

Sygehus Lillebælt - Kolding Sygehus

Kolding, Region Syddanmark, Denmark

Sefako Makgatho Health Sciences University, Medunsa Clinical Research Unit (MeCRU)

Ga-Rankuwa, Gauteng, South Africa

Wits Reproductive Health and HIV Institute (Wits RHI)

Johannesburg, Guateng Province, South Africa

Setshaba Research Centre

Pretoria, Guateng Province, South Africa

Outcomes

Primary Outcomes

All Participants: Concentration of IgG Antibodies to AlpN Proteins in Blood Serum

Time frame: Up to approximately 4 years

Secondary Outcomes

Concentration of IgG Antibodies to AlpN Proteins in Blood Serum in Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: Pre-dose, 1 month post-dose, at delivery, and 6 months post-delivery

Concentration Ratio of IgG Antibodies Between Maternal and Cord Blood at Delivery in Pregnant Participants who Received the GBS-NN/NN2 Booster Dose and their Infant

Time frame: At Delivery, at any time during the trial (Up to approximately 4 years)

Concentration of IgG Antibodies to AlpN Proteins in Blood Serum at Delivery in Pregnant Participants who did not Receive the GBS-NN/NN2 Booster Dose

Time frame: At Delivery, at any time during the trial (Up to approximately 4 years)

Concentration Ratio of IgG Antibodies Between Maternal and Cord Blood at Delivery in Participants who did not Receive the of GBS-NN/NN2 Booster Dose

Time frame: At Delivery, at any time during the trial (Up to approximately 4 years)

Concentration of IgG Antibody to AlpN Proteins in Blood Serum in Infants Born to Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: At birth and at 1 and 3 months post-birth

Concentration of IgG Antibody to AlpN Proteins in Cord Blood in Infants Born to Pregnant Participants who did not Receive the GBS-NN/NN2 Booster Dose

Time frame: At Delivery, at any time during the trial (Up to approximately 4 years)

All Participants: Number of Participants Experiencing Procedure-related Serious Adverse Events (SAEs)

Time frame: Up to approximately 4 years

Number of Participants Experiencing Solicited Local and Systemic Adverse Events (AEs) Among Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: Up to approximately Day 7 post-dose

Number of Participants Experiencing Unsolicited AEs Among Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: Up to approximately Day 28 post-dose

Number of Participants Experiencing SAEs Among Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: Up to approximately 6 months post-delivery

Number of Participants Experiencing AEs of Special Interest (AESI) Among Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: Up until delivery, at any time during the trial (Up to approximately 4 years)

Gestational Age (GA) of Infants Born to Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: At Delivery, at any time during the trial (Up to approximately 4 years)

Weight of Infants Born from Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: At Delivery, at any time during the trial (Up to approximately 4 years)

Length of Infants Born from Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: At Delivery, at any time during the trial (Up to approximately 4 years)

Head Circumference of Infants Born from Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: At Delivery, at any time during the trial (Up to approximately 4 years)

Apgar Score of Infants Born from Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: At Delivery, at any time during the trial (Up to approximately 4 years)

Number of Infants Experiencing Unsolicited AEs Born from Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: Up to 1 month post-birth

Number of Infants Experiencing Medically-attended AEs (MAAEs) Born from Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: Up to 6 months post-birth

Number of Infants Experiencing SAEs Born from Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: Up to 6 months post-birth

Number of Infants Experiencing AESIs Born from Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: Up to 6 months post-birth

A Follow-up Trial of GBS-NN/NN2 Vaccine in Healthy Pregnant Women

Overview

Conditions

Interventions

Eligibility

Locations (6)

Outcomes

Primary Outcomes

Secondary Outcomes