~333 spots leftby Sep 2025

RSVpreF + Shingles Vaccine for Respiratory Syncytial Virus

(PISSARRO Trial)

Recruiting at 15 trial locations
PC
Overseen ByPfizer CT.gov Call Center
Age: 18+
Sex: Any
Travel: May Be Covered
Time Reimbursement: Varies
Trial Phase: Phase 3
Waitlist Available
Sponsor: Pfizer
No Placebo Group
Pivotal Trial (Near Approval)
Prior Safety Data

Trial Summary

What is the purpose of this trial?

This purpose of this phase 3 multicenter, parallel-group, open-label study is to learn about the safety, tolerability, and immunogenicity of RSVpreF and HZ/su vaccine when given together in adults 50 years of age and older.

Research Team

PC

Pfizer CT.gov Call Center

Principal Investigator

Pfizer

Eligibility Criteria

Adults aged 50 and older can join this study to test the safety and immune response of two vaccines given together: one for shingles (Herpes Zoster) and another for Respiratory Syncytial Virus (RSV).

Inclusion Criteria

I am 50 or older and either healthy or have stable chronic conditions.

Exclusion Criteria

Immunocompromised individuals with known or suspected immunodeficiency, as determined by history and/or laboratory/physical examination, and medication list
I have not had the Zostavax vaccine in the last 2 years.
I currently have or had shingles within the last year.
See 6 more

Treatment Details

Interventions

  • HZ/su (Virus Therapy)
  • RSVpreF (Virus Therapy)
Trial OverviewThe trial is testing RSVpreF, a vaccine aimed at preventing RSV, alongside HZ/su, a shingles vaccine. Participants will receive both vaccines to see how well they work when administered at the same time.
Participant Groups
2Treatment groups
Experimental Treatment
Group I: Sequential Administration GroupExperimental Treatment2 Interventions
* Visit 1 (Day 1): HZ/su dose 1 * Visit 2 (Month 1): RSVpreF * Visit 3 (Month 2): HZ/su dose 2
Group II: Coadministration GroupExperimental Treatment2 Interventions
* Visit 1 (Day 1): RSVpreF + HZ/su dose 1 * Visit 3 (Month 2): HZ/su dose 2

Find a Clinic Near You

Who Is Running the Clinical Trial?

Pfizer

Lead Sponsor

Trials
4,712
Recruited
50,980,000+
Known For
Vaccine Innovations
Top Products
Viagra, Zoloft, Lipitor, Prevnar 13

Albert Bourla

Pfizer

Chief Executive Officer since 2019

PhD in Biotechnology of Reproduction, Aristotle University of Thessaloniki

Patrizia Cavazzoni profile image

Patrizia Cavazzoni

Pfizer

Chief Medical Officer

MD from McGill University