Pfizer: Phase 3 study in Respiratory Syncytial Virus (RSV) (920 participants)
Pfizer: Phase 3 study in Respiratory Syncytial Virus (RSV) (920 participants). Its enrollment of 920 is top-decile (93rd percentile of 8,879 records). Dated 42 days ago, it serves as a historical benchmark. Score 75/100. As of 2026-11-04, from ClinicalTrials.gov (U.S. National Library of Medicine) API v2.
Data as of · Compiled by Zalwin from ClinicalTrials.gov (U.S. National Library of Medicine) API v2
enrollment: 920 · 93th percentile of 8,879 ClinicalTrialStartPulse records · 11.5x the median
Free preview: all 14 published fields of this record are shown below. Locked: 499 related US ClinicalTrialStartPulse records and the 7-column CSV export.
| Field | Value |
|---|---|
| Sponsor | Pfizer |
| Sponsor type | Industry (pharma, biotech, medtech) |
| Study | Study to Learn About a Respiratory Syncytial Virus Vaccine in Children at High Risk of RSV Disease |
| NCT ID | NCT07839871 |
| Phase | Phase 3 |
| Status | not yet recruiting |
| Conditions | Respiratory Syncytial Virus (RSV) |
| Intervention types | biological |
| Target enrollment | 920 |
| Site countries | United States, Japan |
| Posted | 2026-09-24 |
| Planned start | 2026-09-28 |
| Event | Newly registered study |
| Event date | 2026-09-24 |
| enrollment percentile | 93th of 8,879 (median 80, 11.5x median) |
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CSV columns: Sponsor · Phase · Conditions · Enrollment · Countries · Event · Posted · official source URL
- Source agency: ClinicalTrials.gov (U.S. National Library of Medicine) API v2
- Record date: 2026-09-24
- Data refreshed: 2026-11-04
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LIVE PUBLIC DATA Source: ClinicalTrials.gov (U.S. National Library of Medicine) API v2 · Last refreshed: Wed, 04 Nov 2026 06:04:38 GMT
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Peer benchmark and outreach value: Pfizer and 2,512 US peers
- US ClinicalTrialStartPulse records like this one: 2,512
- Pfizer's enrollment: 93rd percentile of 8,879 records
- Timing: Low: older than 30 days
- Estimated pipeline if you contact every US peer: $502,400 (peers × rate × deal size; an estimate from your assumptions, not a forecast)
75 / 100 Score
- Industry sponsor (buys outsourced services).
- Phase 3: multi-site, larger budget.
- 920 participants planned.
- Not yet recruiting: vendors still being chosen.
What is the ClinicalTrialStartPulse record for Pfizer?
Pfizer registered a Phase 3 study (NCT07839871) in Respiratory Syncytial Virus (RSV) targeting 920 participants, posted 2026-09-24.
How does Pfizer compare to other ClinicalTrialStartPulse records?
This is a top-decile record: its enrollment of 920 is 11.5x the median of 80 across 8,879 records. It is 42 days old, still within a typical 45-day follow-up window. Its Score of 75/100 puts it among the stronger signals in this feed.
Pfizer vs. top 3 peers
| Organization | Location | Amount | Percentile | Record date |
|---|---|---|---|---|
| Pfizer | US | 920 | 93rd | 2026-09-24 |
| Janssen Research & Development, LLC | US | 864 | 93rd | 2026-11-03 |
| Janssen Research & Development, LLC | US | 743 | 92nd | 2026-11-03 |
| Merck Sharp & Dohme LLC | US | 1,104 | 95th | 2026-11-03 |
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