# Pfizer: Phase 2 study closed enrollment, 235 enrolled (Breast Cancer, Solid Tumors)

**Score:** 75/100

| Field | Value |
|---|---|
| Sponsor | Pfizer |
| Sponsor type | Industry (pharma, biotech, medtech) |
| Study | A Study to Learn About the Study Medicine (Called PF-07220060 in Combination With PF-07104091) In Participants With Breast Cancer and Solid Tumors |
| NCT ID | NCT05262400 |
| Phase | Phase 2 |
| Status | active not recruiting |
| Conditions | Breast Cancer; Solid Tumors |
| Intervention types | drug |
| Target enrollment | 235 |
| Site countries | United States, Argentina, Brazil, Bulgaria, China, Czechia, Mexico, South Africa, Spain |
| Posted | 2022-03-02 |
| Planned start | 2022-03-14 |
| Event | Enrollment closed (active, not recruiting) |
| Event date | 2026-09-14 |
| Last update posted | 2026-09-14 |

## Why this score
- Industry sponsor (buys outsourced services).
- Enrollment closed: data management, monitoring and closeout ahead.
- Phase 2: multi-site, larger budget.
- 235 participants planned.

Source: ClinicalTrials.gov (U.S. National Library of Medicine) API v2 (https://clinicaltrials.gov/study/NCT05262400). Last refreshed: 2026-11-04T06:04:38.232Z.
From public ClinicalTrials.gov registrations. Sponsor and study level only: we never list investigators, contacts or participants. A registration describes a planned study and can change. Status changes are read from each study's current status, actual dates and latest posted update, not a full change history, so an update can be a correction rather than a new change. Verify on ClinicalTrials.gov.