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

Phase 3RecruitingNCT06592586

Minervax ApS338 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

338

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 either in Trial MVX0004 (NCT05154578) or MVX0005 (NCT04596878) 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 or MVX0005, whatever is applicable. * Participant who are 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 or MVX0005. * 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. * 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 (other than GBS-NN/NN2 in the MVX0004 or MVX0005 Trial) GBS vaccines 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

ACTIVE_NOT_RECRUITING

Aarhus Universitetshospital

Aarhus N, Central Jutland, Denmark

RECRUITING

Sygehus Lillebælt - Kolding Sygehus

Kolding, Region Syddanmark, Denmark

RECRUITING

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

Ga-Rankuwa, Gauteng, South Africa

RECRUITING

Wits Reproductive Health and HIV Institute (Wits RHI)

Johannesburg, Guateng Province, South Africa

RECRUITING

Setshaba Research Centre

Pretoria, Guateng Province, South Africa

RECRUITING

Outcomes

Primary Outcomes

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

Time frame: Up to approximately 5 years

Secondary Outcomes

Concentration of IgG Antibodies to AlpN Proteins in Blood Serum Following GBS-NN/NN2 Booster Dose

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

Difference in Concentration of IgG Antibodies Between Maternal and Cord Blood at Delivery Following GBS-NN/NN2 Booster Dose

Time frame: Up until delivery, approximately 5 years

Concentration of IgG Antibodies to AlpN Proteins in Blood Serum at Delivery in the Absence of GBS-NN/NN2 Booster Dose

Time frame: Up until delivery, approximately 5 years

Difference in Concentration of IgG Antibodies Between Maternal and Cord Blood at Delivery in the Absence of GBS-NN/NN2 Booster Dose

Time frame: Up until delivery, approximately 5 years

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

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

Concentration of IgG Antibody to AlpN Proteins in Cord Blood of Offspring from Pregnant Participants who did not Received the GBS-NN/NN2 Booster Dose

Time frame: Up until birth, approximately 5 years

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

Time frame: Up to approximately 5 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

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

Time frame: Up to approximately Day 28

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

Time frame: Up until delivery, approximately 5 years

Gestational Age (GA) of Offspring from Pregnant Participants who Received the GBS-NN/NN2 Booster Dose

Time frame: Up until birth, approximately 5 years

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

Time frame: Up until birth, approximately 5 years

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

Time frame: Up until birth, approximately 5 years

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

Time frame: Up until birth, approximately 5 years

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

Time frame: Up until birth, approximately 5 years

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

Time frame: Up to 1 month post-birth, approximately 5 years

Developmental Milestones of Offspring from Pregnant Participants who Received the GBS-NN/NN2 Booster Dose as Assessed by the Ages & Stages Questionnaire, 3rd Edition (ASQ-3)

Time frame: At 6 months post-birth, approximately 5 years

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

Time frame: Up to 6 months post-birth, approximately 5 years

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

Time frame: Up to 6 months post-birth, approximately 5 years

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

Time frame: Up to 6 months post-birth, approximately 5 years

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

Overview

Conditions

Interventions

Eligibility

Locations (6)

Outcomes

Primary Outcomes

Secondary Outcomes

Central Contacts