Last updated 8 months ago

Study of a Respiratory Syncytial Virus Candidate Encapsulated in a Lipid Nanoparticle Based Formulation in Adults Aged 18 to 50 Years and 60 Years and Older

790 patients around the world
Available in Puerto Rico, Honduras, Mexico, United States
Stage 1: The duration of each participant's participation is 12 months for the Sentinel and Main Cohorts, 24 months overall for the subset of participants enrolled in the Booster Cohort. Treatment Duration: - Sentinel Cohort: 1 intra-muscular (IM) injection. Participants will be followed for 12 months post-vaccination. - Main Cohort: 1 IM injection. Participants will be followed for 12 months post-vaccination. - Booster Cohort: 1 IM injection 12 months after the primary vaccination. Participants will be followed for 12 months after administration of the booster dose. Stage 2: The duration of each participant's participation is approximately 6 months. Treatment Duration: 1 IM injection. Participants will be followed for approximately 6 months post vaccination
Sanofi Pasteur, a Sanofi Company
790Patients around the world

This study is for people with

Respiratory syncytial virus

Requirements for the patient

From 18 Years
All Gender

Medical requirements

Sentinel Cohort: Aged 18 to 50 years on the day of inclusion.
Main Cohort: Aged 60 years or older on the day of inclusion.
Sentinel Cohort: A female participant is eligible to participate if she is not pregnant or breastfeeding and is of non-childbearing potential. To be considered of non-childbearing potential, a female must be postmenopausal for at least 1 year or surgically sterile or is of childbearing potential and agrees to use an effective contraceptive method or abstinence from at least 4 weeks prior to study intervention administration until at least 12 weeks after study intervention administration.
Main and Booster Cohorts: A female participant is eligible to participate if she is not pregnant or breastfeeding and is of non-childbearing potential. To be considered of non-childbearing potential, a female must be postmenopausal for at least 1 year or surgically sterile.
Able to attend all scheduled visits and to comply with all study procedures.
Informed consent form has been signed and dated.
Known or suspected congenital or acquired immunodeficiency; or receipt of immunosuppressive therapy, such as anti-cancer chemotherapy or radiation therapy, within the preceding 6 months; or long-term systemic corticosteroid therapy (prednisone or equivalent for more than 2 consecutive weeks within the past 3 months).
Known systemic hypersensitivity to any of the study intervention components (eg, polyethylene glycol, polysorbate); history of a life-threatening reaction to the study interventions used in the study or to a product containing any of the same substances; any allergic reaction (eg, anaphylaxis) after administration of mRNA COVID-19 vaccine.
History of RSV-associated illness, diagnosed clinically, serologically, or microbiologically in the last 12 months.
Previous history of myocarditis, pericarditis, and/or myopericarditis.
Thrombocytopenia or bleeding disorder, contraindicating IM injection based on investigator's judgment.
Bleeding disorder, or receipt of anticoagulants in the 3 weeks preceding inclusion, contraindicating intramuscular injection.
Chronic illness that, in the opinion of the investigator, is at a stage where it might interfere with study conduct or completion.
Alcohol, prescription drug, or substance abuse that, in the opinion of the investigator, might interfere with the study conduct or completion.
Receipt of any vaccine other than mRNA vaccine in the 4 weeks preceding any study intervention administration or planned receipt of any vaccine other than mRNA vaccine in the 4 weeks following any study intervention administration.
Receipt of any mRNA vaccine in the 60 days preceding any study intervention administration or planned receipt of any mRNA vaccine in the 60 days following any study intervention administration.
Previous vaccination against RSV with an investigational vaccine.
Receipt of immune globulins, blood, or blood-derived products in the past 3 months.
Receipt of oral or injectable antibiotic therapy within 72 hours prior to the first blood draw.
Participation at the time of study enrollment (or in the 4 weeks preceding the first study intervention administration) or planned participation during the present study period in another clinical study investigating a vaccine, drug, medical device, or medical procedure.
Deprived of freedom by an administrative or court order, or in an emergency setting, or hospitalized involuntarily.
Self-reported or documented human immunodeficiency virus (HIV) detected by any FDA-approved/validated test, hepatitis B virus surface antigen (HBsAg), hepatits B core antibodies (HBcAb), or hepatitis C virus antibodies (HCV Abs), or positive SARS-CoV-2 RT-PCR or antigen test.
Identified as an investigator or employee of the investigator or study center with direct involvement in the proposed study, or identified as an immediate family member (ie, parent, spouse, natural or adopted child) of the investigator or employee with direct involvement in the proposed study.
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