~260 spots leftby May 2026

RSV Vaccination + Immunization for Respiratory Syncytial Virus

Recruiting in Palo Alto (17 mi)
+7 other locations
Age: 18 - 65
Sex: Female
Travel: May Be Covered
Time Reimbursement: Varies
Trial Phase: Phase 4
Recruiting
Sponsor: National Institute of Allergy and Infectious Diseases (NIAID)
Must not be taking: Immunosuppressants, Corticosteroids
Disqualifiers: Psychiatric disease, Immune impairment, others
No Placebo Group
Prior Safety Data

Trial Summary

What is the purpose of this trial?

Respiratory Syncytial Virus (RSV) is the leading cause of lower respiratory tract infections (LRTIs) in infants and young children. It is also a leading cause of mortality in children \<5 years of age worldwide. Until recently, no Food and Drug Administration (FDA)-approved vaccines were available to prevent RSV infection. The only prophylactic product for RSV prevention recommended for infants was the monoclonal antibody palivizumab, but administration was limited to those with extreme prematurity, chronic lung disease, or hemodynamically significant congenital heart disease. However, in 2023, the FDA approved two products designed to prevent RSV lower respiratory tract disease (LRTD) in all infants: an active RSV vaccine based on the prefusion F protein (RSVpreF, ABRYSVO, Pfizer) administered during pregnancy, and a passive, long-acting monoclonal antibody (nirsevimab-alip \[henceforth referred to as nirsevimab\], BEYFORTUS, AstraZeneca) administered to infants at birth or at the start of their first RSV season. Both products were evaluated in Phase 3 pivotal clinical trials and have high efficacy in preventing LRTD caused by RSV in infants. Although there is no established correlate of protection against RSV, antibodies have been associated with protection across multiple studies. The clinical development plan for the products did not include comprehensive evaluations of the magnitude and durability of the immune response, nor were the two products tested in a single trial. This study is a prospective, randomized, open-label Phase 4 study with the primary objective of evaluating the magnitude and durability of RSV-specific neutralizing antibodies in infants through 12 months of life following either maternal RSV vaccination, infant nirsevimab administration, or both products combined.

Will I have to stop taking my current medications?

The trial does not specify if you need to stop taking your current medications, but you cannot participate if you have taken immunosuppressive drugs or certain biologic agents within 30 days before enrolling. Inhaled, topical, or certain other forms of steroids are allowed.

What data supports the effectiveness of the drug Nirsevimab for preventing respiratory syncytial virus (RSV) infection?

Nirsevimab has been shown to be effective in preventing RSV infection in newborns and infants during their first RSV season, as demonstrated by positive results in Phase 2b and 3 clinical trials. It is a long-acting antibody that targets a specific part of the RSV virus, allowing for a single dose to provide protection throughout the RSV season.12345

Is the RSV treatment Nirsevimab safe for humans?

Nirsevimab has been approved for preventing RSV infection in newborns and infants based on positive results from clinical trials, indicating it is generally safe for this use.14678

How is the drug Abrysvo, Beyfortus different from other RSV treatments?

Abrysvo and Beyfortus are unique because they offer a long-acting protection against RSV with a single dose, unlike the existing option palivizumab, which requires monthly injections. Beyfortus (Nirsevimab) specifically targets a stable part of the RSV virus, providing effective prevention for infants during their first RSV season.13459

Research Team

Eligibility Criteria

This trial is for healthy infants at risk of Respiratory Syncytial Virus (RSV) infection. It includes those whose mothers are vaccinated during pregnancy with ABRYSVO and infants receiving BEYFORTUS at birth or the start of RSV season. Specific eligibility criteria were not provided.

Inclusion Criteria

I am between 18-45 years old, pregnant with one baby, and not at high risk for pregnancy complications.
Understands and agrees to comply with all study procedures
I plan to give birth in a hospital or facility that can perform study procedures.
See 3 more

Exclusion Criteria

Maternal conditions known to impair transplacental transfer of maternal antibodies (e.g., placental pathology, hypergammaglobulinemia, HIV)
Maternal history of preterm birth (<34 weeks GA)
I have a condition that makes bleeding more likely or can't have shots in my muscles.
See 8 more

Trial Timeline

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Treatment

Mothers receive RSVpreF vaccine during pregnancy and infants receive nirsevimab at birth or at 3 months

12 months
Multiple visits for administration and monitoring

Follow-up

Participants are monitored for safety and effectiveness after treatment

12 months
Visits at Day 1, 43, 91, 181, and 366

Treatment Details

Interventions

  • Abrysvo (Cancer Vaccine)
  • Beyfortus (Monoclonal Antibodies)
Trial OverviewThe study tests the immune response in infants to either maternal vaccination with ABRYSVO, infant immunization with BEYFORTUS, or both. It's a Phase 4 trial aiming to understand how well these interventions protect against RSV over the first year of life.
Participant Groups
4Treatment groups
Experimental Treatment
Group I: Group 2Experimental Treatment1 Intervention
Mother does NOT receive maternal RSVpreF and infant receives one dose of nirsevimab (BEYFORTUS) 50mg/0.5mL if body weight \<5kg or 100mg/mL if body weight is \>= 5kg at birth . N= 50.
Group II: Group 1CExperimental Treatment2 Interventions
Mother receives 120 mcg/0.5ml of maternal RSVpreF (ABRYSVO) administered intramuscularly once during 32 0/7 to 36 6/7 weeks GA and infant receives one dose of nirsevimab (BEYFORTUS) 50mg/0.5mL if body weight \<5kg or 100mg/mL if body weight is \>= 5kg at 3-month . N= 50.
Group III: Group 1BExperimental Treatment2 Interventions
Mother receives 120 mcg/0.5ml of maternal RSVpreF (ABRYSVO) administered intramuscularly once during 32 0/7 to 36 6/7 weeks GA and infant receives one dose of nirsevimab (BEYFORTUS) 50mg/0.5mL if body weight \<5kg or 100mg/mL if body weight is \>= 5kg at birth. N= 50.
Group IV: Group 1AExperimental Treatment1 Intervention
Mother receives 120 mcg/0.5ml of maternal RSVpreF (ABRYSVO) administered intramuscularly once during 32 0/7 to 36 6/7 weeks GA and infant does NOT receive nirsevimab. N= 50.

Find a Clinic Near You

Who Is Running the Clinical Trial?

National Institute of Allergy and Infectious Diseases (NIAID)

Lead Sponsor

Trials
3,361
Recruited
5,516,000+

Dr. Jeanne Marrazzo

National Institute of Allergy and Infectious Diseases (NIAID)

Chief Executive Officer since 2023

MD, MPH

Dr. H. Clifford Lane profile image

Dr. H. Clifford Lane

National Institute of Allergy and Infectious Diseases (NIAID)

Chief Medical Officer

MD

Findings from Research

The novel PD-1 B-cell peptide vaccine (PD1-Vaxx) demonstrated superior efficacy compared to standard anti-PD-1 monoclonal antibodies in preclinical mouse models of colon carcinoma, suggesting it may be a promising alternative for cancer treatment.
Combining PD1-Vaxx with a HER-2 peptide vaccine resulted in enhanced tumor growth inhibition, and both vaccines showed a favorable safety profile with no observed toxicity or autoimmunity.
Immunogenicity and antitumor efficacy of a novel human PD-1 B-cell vaccine (PD1-Vaxx) and combination immunotherapy with dual trastuzumab/pertuzumab-like HER-2 B-cell epitope vaccines (B-Vaxx) in a syngeneic mouse model.Kaumaya, PTP., Guo, L., Overholser, J., et al.[2021]
Nivolumab, an immune checkpoint inhibitor, shows a low rate of severe adverse effects (grade ≥3 AEs at 12%) and a very low mortality rate (0.25%), indicating it is a relatively safe treatment option for cancer patients.
In terms of efficacy, nivolumab demonstrates better treatment responses and survival rates compared to traditional chemotherapy, with a 1-year overall survival rate of 52% and a significantly higher objective response rate (ORR) of 26%.
Safety and efficacy of nivolumab in the treatment of cancers: A meta-analysis of 27 prospective clinical trials.Tie, Y., Ma, X., Zhu, C., et al.[2022]
The abstract lists a wide range of medical interventions and drugs, indicating a comprehensive review of various treatments, but does not provide specific efficacy or safety data for any individual treatment.
The mention of numerous drugs and therapies suggests a focus on exploring diverse therapeutic options, but without detailed results or conclusions, the effectiveness or mechanisms of action remain unclear.
Gateways to clinical trials.Tomillero, A., Moral, MA.[2008]

References

Nirsevimab: review of pharmacology, antiviral activity and emerging clinical experience for respiratory syncytial virus infection in infants. [2023]
First-in-Human Phase 1 Study of a B Cell- and Monocyte-Based Immunotherapeutic Vaccine Against HER2-Positive Advanced Gastric Cancer. [2023]
Immunogenicity and antitumor efficacy of a novel human PD-1 B-cell vaccine (PD1-Vaxx) and combination immunotherapy with dual trastuzumab/pertuzumab-like HER-2 B-cell epitope vaccines (B-Vaxx) in a syngeneic mouse model. [2021]
Safety and efficacy of nivolumab in the treatment of cancers: A meta-analysis of 27 prospective clinical trials. [2022]
Gateways to clinical trials. [2008]
Analysis of immune-mediated reactions in patients with non-small cell lung cancer treated with nivolumab and its association with effectiveness. [2023]
Tocilizumab for the treatment of immune-related adverse events: a systematic literature review and a multicentre case series. [2021]
Real-world safety of nivolumab in patients with non-small-cell lung cancer in Japan: Postmarketing surveillance. [2021]
The Use of 20% Subcutaneous Immunoglobulin Replacement Therapy in Patients With B Cell Non-Hodgkin Lymphoma With Humoral Immune Dysfunction After Treatment With Rituximab. [2021]