A Phase 3 interventional study of Abrysvo and Nirsevimab in RSV Immunization, sponsored by PENTA Foundation. Not yet recruiting. Per ClinicalTrials.gov, last updated 2025-06-27.
Sponsored by PENTA Foundation · Phase 3, Interventional, and Prevention
RSV (which stands for Respiratory Syncytial Virus) is an infection that causes cold-like symptoms and is most common during winter months. Most people with RSV infection get better by themselves but babies and younger children can become very poorly. About 1 in 15 infants with confirmed RSV within the first 12 months of life will be hospitalised, and a very small proportion will be seriously ill and may die.
Currently there are two different prevention options that can be used to prevent RSV infection in babies. One is a vaccine given to the mother during pregnancy, and the other is a monoclonal antibody given by injection to the baby. Although both prevention options work well on their own and are safe, neither provides 100% protection to the infant. It is not known whether giving both medicines, one to the mother in pregnancy and one to the infant, would provide better protection than giving only one medicine - this is what the PIPELINE-RSV study will look at.
PIPELINE-RSV-International will recruit about 1500 pregnant women from across Europe in UK, Switzerland, the Netherlands and Belgium. A parallel trial, PIPELINE-RSV-France, running in France will recruit about 1000 pregnant women in France; the protocols will align on key aspects and the data will be analysed together. The study will include three study groups with different prevention options used in each: (1) a vaccine given to the mother in pregnancy, (2) an injection given to the baby at the beginning of RSV season, or (3) both a vaccine given to the mother in pregnancy and an injection given to the baby at around 4 months of age. Each mother-baby pair will be randomly allocated to group by a computer. The numbers of babies in each of these groups who acquire RSV will be compared. In some countries only two of the three study groups may be available.
Pregnant women and their babies will be followed until the baby reaches 12 months of age. Information will be collected about medically-important side effects either the mother or the baby had from their medicine(s) and any symptoms of RSV the baby had. Visits with the mother and baby will occur at birth, and 4 and 12 months later; these will ideally be in-person at birth and at 12 months. The mother will complete questionnaires via a Web-based platform to report any non-routine in-person visits, once in pregnancy and after the baby is born twice a month or monthly (more often in the winter), to also report baby's symptoms, to report their trial experience when the baby is 4 and 12 months' old, and to provide their views on vaccination at birth, and when the baby is 4 and 12 months' old. If the baby develops symptoms that might be RSV, their mother or another caregiver will be asked to take a sample using a swab from the baby's nose or mouth, and to send it by post for testing to find out if the baby has RSV.
As well as the main research study, there are also some substudies. A questionnaire will be given to women who consent to take part, to find out their motivations for joining the study and how they prefer to receive information about taking part in studies. A small number of women will be asked to take part in a study to look at how mothers' and babies' immune systems respond to the two different study prevention options , and to investigate different ways of collecting samples from their babies. In addition, researchers will use data from the study to see whether giving both medicines is cost-effective compared with giving just one medicine.
The study might be adapted in the future to look at other medicines for preventing RSV infection, when they become available.
PENTA Foundation is the lead sponsor of 22 studies on the registry; 3 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Pregnant women
Infant
Live-birth to mother enrolled in the study
Exclusion Criteria:
Pregnant women
Note, all live born infants to mothers participating in the study will be included (with consent as required), but infant mAb will not be given if contraindicated.
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
RSV monoclonal antibody administered to infants at birth (or up to 7 days later) if the infant is born during the RSV season.
Drug: Nirsevimab
RSV Maternal Vaccine administered to the woman in pregnancy, between 24 (or as per country guidance) and 36+6 gestational weeks.
Drug: Abrysvo
RSV Maternal Vaccine administered to the woman in pregnancy, between 24 (or as per country guidance) and 36+6 gestational weeks, combined with infant RSV monoclonal antibody administered to the infant at 4 months of age.
Drug: Abrysvo · Drug: Nirsevimab
Maternal RSV Vaccine (MV). RSV bivalent recombinant vaccine with subgroup A and B stabilised prefusion F antigens, single intramuscular injection of 0.5 mL, administered once, in pregnancy.
Infant RSV monoclonal antibody (mAb). For infants \<5kg: 50mg (0.5mL in pre-filled syringe), for infants ≥5kg: 100mg (1mL in pre-filled syringe), administered as a single intramuscular injection.
Symptomatic RSV respiratory tract infection (RTI) in an infant, confirmed by an approved positive RSV test, by 12 months of age.
Time frame: From birth to when the infant is 12 months of age.
No study locations are listed for this record.
Start is estimated for Sep 2025; primary completion for Nov 2028, 38 months later.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Jun 2025. You cannot join it, but the record below documents what was studied.
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Studies of the drugs tested here: Abrysvo · Nirsevimab
PENTA Foundation