# Alexion Pharmaceuticals, Inc.: Phase 3 study closed enrollment, 1182 enrolled (Transthyretin Amyloid Cardiomyopathy)

**Score:** 100/100

| Field | Value |
|---|---|
| Sponsor | Alexion Pharmaceuticals, Inc. |
| Sponsor type | Industry (pharma, biotech, medtech) |
| Study | Study of ALXN2220 Versus Placebo in Adults With ATTR-CM |
| NCT ID | NCT06183931 |
| Phase | Phase 3 |
| Status | active not recruiting |
| Conditions | Transthyretin Amyloid Cardiomyopathy |
| Intervention types | drug |
| Target enrollment | 1182 |
| Site countries | United States, Argentina, Australia, Austria, Belgium, Brazil, Canada, China, Czechia, Denmark, France, Germany |
| Posted | 2023-12-28 |
| Planned start | 2024-01-11 |
| Event | Enrollment closed (active, not recruiting) |
| Event date | 2026-10-22 |
| Last update posted | 2026-10-22 |

## Why this score
- Posted in the last two weeks.
- Industry sponsor (buys outsourced services).
- Enrollment closed: data management, monitoring and closeout ahead.
- Phase 3: multi-site, larger budget.
- 1182 participants planned.

Source: ClinicalTrials.gov (U.S. National Library of Medicine) API v2 (https://clinicaltrials.gov/study/NCT06183931). 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.