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Safety of RSV Preventive Monoclonal Antibody

Safety of Simultaneous Administration of Respiratory Syncytial Virus (RSV) Preventive Monoclonal Antibody With Routine Childhood Immunizations in Infants

Status
Recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07158814
Enrollment
524
Registered
2025-09-08
Start date
2025-10-02
Completion date
2027-04-01
Last updated
2026-03-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Adverse Event Following Immunisation, Fever

Keywords

Respiratory Syncytial Virus (RSV), Fever Following Immunization, RSV Monoclonal Antibody

Brief summary

This is a prospective, randomized, open-label clinical trial to evaluate the safety of administration of respiratory syncytial virus (RSV) preventive monoclonal antibody and other routine childhood vaccines given simultaneously at Visit 1, as compared to sequential administration of respiratory syncytial virus (RSV) preventive monoclonal antibody and other vaccines at separate visits (Visits 1 and 2).

Detailed description

Parent(s) or legal guardians will assess fever and other solicited local and systemic adverse events on the day of immunization (Day 1) and the next 6 days (through Day 7) following Visit 1 and Visit 2 using either a web-based data collection system or a paper memory aid. Serious adverse events and adverse events of special interest will be captured during the entire study period.

Interventions

DRUGRespiratory Syncytial Virus (RSV) Preventive Monoclonal Antibody

ACIP Recommended Preventive Monoclonal Antibody

Sponsors

Duke University
Lead SponsorOTHER
Centers for Disease Control and Prevention
CollaboratorFED
Children's Hospital Medical Center, Cincinnati
CollaboratorOTHER
Columbia University
CollaboratorOTHER
Emory University
CollaboratorOTHER
Kaiser Permanente
CollaboratorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
6 Weeks to 30 Weeks
Healthy volunteers
Yes

Inclusion criteria

* Infants ≥ 6 weeks to \<30 weeks of age at the time of enrollment * Infants eligible for RSV monoclonal antibody and at least one routine childhood vaccine in outpatient clinic * The parent/legal guardian must be willing and capable of providing permission for their infant to participate through the written informed consent process * Parent/legal guardian must be able to read and comprehend English or Spanish * The parent/legal guardian must be available for follow-up study contact by telephone from enrollment to completion of the study period * The parent/legal guardian must agree to sign a medical record release for the infant so that study personnel may obtain medical information about the infant's health (if needed) * The parent/legal guardian must be willing to delay their child's receipt of RSV monoclonal antibody up to two weeks from the scheduled date and to return for a second visit to receive the deferred RSV monoclonal antibody

Exclusion criteria

* Known contraindication or precaution to RSV monoclonal antibody or other routine vaccines being administered * Received any vaccine within 14 days prior to enrollment and the first immunization day in this study * Known previous receipt of RSV monoclonal antibody * Received any experimental/investigational agent (vaccine, drug, biologic, device, blood product, or medication) within 28 days prior to immunization in this study or expects to receive an experimental/investigational agent within the follow-up time period (8 days after the second immunization in this study) * A moderate to severe acute illness and/or a reported temporal temperature greater than or equal to 100.4°F (38.0°C) within 48 hours prior to enrollment or a temporal temperature (measured by temporal artery thermometer) greater than or equal to 100.4°F (38.0°C) at the time of enrollment. (This may result in a temporary delay of immunization) * Receipt of an antipyretic medication (acetaminophen or ibuprofen) within 48 hours prior to enrollment (This may result in a temporary delay of immunization) * Planned receipt of a prophylactic antipyretic medication on the day of and/or days following immunization. This exclusion does not apply if the parent/legal guardian indicates they might administer antipyretics after immunization in response to fever or pain * Has any condition that would, in the opinion of the site investigator, place the participant at an unacceptable risk of injury or render the participant unable to meet the requirements of the protocol * Anyone who is a first-degree relative of any research study personnel * The infant is born to a mother who received a maternal RSV immunization more than 14 days prior to delivery and is not eligible for RSV preventative monoclonal antibody * Bleeding disorder or condition associated with prolonged bleeding that would present as a safety risk per opinion of the investigator * History of severe adverse reaction associated with a vaccine and/or severe allergic reaction to any component of the vaccines or RSV monoclonal antibody * Has an active neoplastic disease, or a history of any hematologic malignancy * History of a severe allergic reaction (e.g., anaphylaxis) after a previous dose or to a component of a vaccine administered on the day of study enrollment * Immunosuppression as a result of an underlying illness or treatment or use of anti-cancer chemotherapy or radiation therapy since birth * For infants receiving DTaP vaccine (alone or combination vaccine): Encephalopathy (e.g., coma, decreased level of consciousness, prolonged seizures), not attributable to another identifiable cause, within 7 days of administration of previous dose of DTaP * Intention to receive non-live or live vaccines during the 4 weeks after Visit 1; vaccines may be administered after enrollment if deemed a personal or public health priority by the health care provider caring for this patient or the study team * Long term (at least 14 days of prednisone 2 mg/kg/day or equivalent other glucocorticoid) use of any parenteral steroids within the 6 months prior to enrollment (topical, nasal and inhaled steroids are allowed)

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants with Fever Following ImmunizationUp to 2 days post administrationNumber of infants with fever (temperature ≥ 38.0°C or ≥ 100.4°F) on day 1 and/or day 2 following Visit 1 and/or Visit 2.

Secondary

MeasureTime frameDescription
Number of Participants with Grade 2 and/or 3 Fever Following Visit 1Up to 2 days post administrationNumber of infants with moderate/severe fever (Grade 2 and/or 3) on day 1 and/or day 2 following Visit 1. (Moderate/severe fever: ≥ 38.4°C or ≥ 101.2°F)
Number of Participants with Grade 2 and/or 3 Fever Following Visit 2Up to 2 days post administrationNumber of infants with moderate/severe fever (Grade 2 and/or 3) on day 1 and/or day 2 following Visit 2. (Moderate/severe fever: ≥ 38.4°C or ≥ 101.2°F)
The Number of Participants with At Least One Serious Adverse EventUp to 98 days post administration
The Number of Participants with At Least One Adverse Event of Special InterestUp to 98 days post administration

Countries

United States

Contacts

CONTACTMichael J Smith, MD
michael.j.smith@duke.edu919 684 6335
CONTACTEmily A Randolph, MBA
emily.randolph@duke.edu919 385 5785
PRINCIPAL_INVESTIGATORMichael J Smith, MD

Duke University

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 17, 2026