Approval Probability
TA Base Rate
Adjusted LOA
ML Risk
Also known as RSVpreF, RSVpreF Vaccine
RSVpreF+qIRV · 1 trial · 1 indication
Local reactions included pain, redness and swelling at the injection site, recorded by participants in an electronic diary (e-diary). Pain at injection site was graded as mild: did not interfere with activity; moderate: interfered with activity; severe: prevented daily activity. Redness and swelling were measured and recorded in measuring device units, where 1 measuring device unit=0.5 centimeter (cm). Redness and swelling were graded as mild: 2.5 cm to 5.0 cm; moderate: greater than (\>) 5.0 cm to 10.0 cm; severe: \> 10 cm.
Local reactions included pain, redness and swelling at the injection site, recorded by participants in an e-diary. Pain at injection site was graded as mild: did not interfere with activity; moderate: interfered with activity; severe: prevented daily activity. Redness and swelling were measured and recorded in measuring device units, where 1 measuring device unit=0.5 cm. Redness and swelling were graded as mild: 2.5 cm to 5.0 cm; moderate: \> 5.0 cm to 10.0 cm; severe: \> 10 cm.
Local reactions included pain, redness and swelling at the injection site, recorded by participants in an e-diary. Pain at injection site was graded as mild: did not interfere with activity; moderate: interfered with activity; severe: prevented daily activity. Redness and swelling were measured and recorded in measuring device units, where 1 measuring device unit=0.5 cm. Redness and swelling were graded as mild: 2.5 cm to 5.0 cm; moderate: \> 5.0 cm to 10.0 cm; severe: \> 10 cm.
Systemic events included fever, fatigue, headache, vomiting, nausea, diarrhea, chills, new/worsened muscle pain and new/worsened joint pain. These were recorded by participants in an e-diary. Fever defined as oral temperature \>=38.0 degrees Celsius (deg C) and categorized as mild: \>=38.0 to 38.4 deg C, moderate: \>38.4 to 38.9 deg C, severe: \>38.9 to 40.0 deg C. Vomiting categorized as mild: 1-2 times in 24 hours (h); moderate: \>2 times in 24h; severe: required intravenous (IV) hydration. Diarrhea categorized as mild: 2-3 loose stools in 24h; moderate: 4-5 loose stools in 24h; severe: 6 or more loose stools in 24h. Headache, fatigue, chills, new/worsened muscle pain and new/worsened joint pain were categorized as mild: didn't interfere with activity; moderate: some interference with activity; severe: prevented daily routine activity.
Systemic events included fever, fatigue, headache, vomiting, nausea, diarrhea, chills, new/worsened muscle pain and new/worsened joint pain. These were recorded by participants in an e-diary. Fever defined as oral temperature \>=38.0 deg C and categorized as mild: \>=38.0 to 38.4 deg C, moderate: \>38.4 to 38.9 deg C, severe: \>38.9 to 40.0 deg C. Vomiting categorized as mild: 1-2 times in 24h; moderate: \>2 times in 24h; severe: required IV hydration. Diarrhea categorized as mild: 2-3 loose stools in 24h; moderate: 4-5 loose stools in 24h; severe: 6 or more loose stools in 24h. Headache, fatigue, chills, new/worsened muscle pain and new/worsened joint pain were categorized as mild: didn't interfere with activity; moderate: some interference with activity; severe: prevented daily routine activity.
Systemic events included fever, fatigue, headache, vomiting, nausea, diarrhea, chills, new/worsened muscle pain and new/worsened joint pain. These were recorded by participants in an e-diary. Fever defined as oral temperature \>=38.0 deg C and categorized as mild: \>=38.0 to 38.4 deg C, moderate: \>38.4 to 38.9 deg C, severe: \>38.9 to 40.0 deg C. Vomiting categorized as mild: 1-2 times in 24h; moderate: \>2 times in 24h; severe: required IV hydration. Diarrhea categorized as mild: 2-3 loose stools in 24h; moderate: 4-5 loose stools in 24h; severe: 6 or more loose stools in 24h. Headache, fatigue, chills, new/worsened muscle pain and new/worsened joint pain were categorized as mild: didn't interfere with activity; moderate: some interference with activity; severe: prevented daily routine activity.
An AE was defined as any untoward medical occurrence in a participant temporally associated with the use of study intervention, whether or not considered related to the study intervention. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were included.
An AE was defined as any untoward medical occurrence in a participant temporally associated with the use of study intervention, whether or not considered related to the study intervention. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were included.
An AE was defined as any untoward medical occurrence in a participant temporally associated with the use of study intervention, whether or not considered related to the study intervention. Exact 2-sided 95% CI was based on the Clopper and Pearson method. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were included.
An SAE was defined as any untoward medical occurrence that, at any dose, met one or more of the following criteria - resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect and was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic and other important medical event.
An SAE was defined as any untoward medical occurrence that, at any dose, met one or more of the following criteria - resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect and was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic and other important medical event.
GMTs and associated 2-sided 95% CIs are reported as descriptive data. GMRs and associated 2-sided 95% CIs are reported in statistical analysis section of this outcome measure. GMR was the ratio of RSV subgroup A (RSV A) or RSV subgroup B (RSV B) neutralizing GMTs in the combination RSVpreF + qIRV group to that in the sequential-administration RSVpreF group.
GMTs and associated 2-sided 95% CIs are reported as descriptive data. GMRs and associated 2-sided 95% CIs are reported in statistical analysis section of this outcome measure. GMR was the ratio of each strain neutralizing GMTs in the combination RSVpreF + qIRV group to that in the sequential-administration RSVpreF group. The analysis was performed on the influenza strains: H1N1 A/Sydney, H3N2 A/Darwin, B/Austria, and B/Phuket.
| Arm | Type | Description |
|---|---|---|
| SSA Group 1: Combination | EXPERIMENTAL | Combination (RSVpreF + qIRV) (Visit 1) followed by placebo (Visit 2). RSVpreF and qIRV are administered as concomitantly but as individual injections. |
| SSA Group 2: Sequential | EXPERIMENTAL | Sequential administration of qIRV (Visit 1) followed by RSVpreF (Visit 2) |
| SSB Group 1: Combination (RSVpreF + qIRV) 1.0-mL formulation | EXPERIMENTAL | RSVpreF lyophilized cake reconstituted with water for injection and mixed with qIRV, yielding an injection volume of 1.0 mL |
| SSB Group 2: Combination (RSVpreF +qIRV) 0.5-mL formulation | EXPERIMENTAL | RSVpreF lyophilized cake reconstituted with qIRV to yield an injection volume of 0.5 mL |
| Name | Type | Description |
|---|---|---|
| RSVpreF+qIRV | BIOLOGICAL | RSVpreF containing 2 stabilized RSV prefusion F antigens, in equal amounts from virus subgroups A and B combined with Quadrivalent influenza modRNA vaccine (qIRV) encoding HA of 4 strains as recommended for the influenza season (2 A strains, 2 B strains) |
| qIRV | BIOLOGICAL | Quadrivalent influenza modRNA vaccine (qIRV) encoding HA of 4 strains as recommended for the influenza season (2 A strains, 2 B strains) |
| RSVpreF | BIOLOGICAL | RSVpreF containing 2 stabilized RSV prefusion F antigens, in equal amounts from virus subgroups A and B |
| Placebo | DRUG | 0.9% saline for injection |
| RSVpreF + qIRV 1.0 mL formulation | BIOLOGICAL | RSVpreF containing 2 Stabilized RSV prefusion F antigens, in equal amounts from virus subgroups A and B plus qIRV Encoding HA of 4 strains as recommended for the influenza season (2 A strains and 2 B strains) plus sterile water as diluent for injection |
| RSVpreF + qIRV 0.5 mL formulation | BIOLOGICAL | RSVpreF containing 2 Stabilized RSV prefusion F antigens, in equal amounts from virus subgroups A and B plus qIRV Encoding HA of 4 strains as recommended for the influenza season (2 A strains and 2 B strains) |
Substudy A: Inclusion Criteria: 1. Participants ≥60 years of age at study enrollment. 2. Participants who are willing and able to comply with all scheduled visits, investigational plan, laboratory tests, lifestyle considerations, and other study procedures. 3. Healthy participants who are determin...
RSVpreF is an investigational vaccine being studied for the prevention of respiratory syncytial virus (RSV) infection and related lower respiratory tract illness in adults. It is in Phase 3 clinical development and is not yet approved by the FDA.
RSVpreF is being developed by Pfizer, Inc. (NYSE: PFE). The company is conducting multiple Phase 3 clinical trials to evaluate the vaccine's safety and immunogenicity in various adult populations.
RSVpreF is currently in Phase 3 clinical development. It is an investigational vaccine and has not received FDA approval. Pfizer is conducting several Phase 3 trials to assess its safety and immune response in different adult groups.
RSVpreF is being studied in four Phase 3 trials, including NCT05842967 (completed, in US adults at high risk), NCT07543380 (recruiting in Japan), NCT07653100 (recruiting in India), and NCT07768345 (not yet recruiting in immunocompromised US adults).
Yes, RSVpreF is also known as RSVpreF Vaccine. Both names refer to the same investigational vaccine being developed by Pfizer for respiratory syncytial virus.
RSVpreF is a vaccine designed to elicit an immune response against respiratory syncytial virus. It is being studied in randomized, double-blind, placebo-controlled trials to evaluate its ability to generate protective antibodies in adults.