# European Extension Study to Evaluate Safety and Efficacy of CTP-543 in Adults With Alopecia Areata

> **NCT05041803** · PHASE3 · COMPLETED · sponsor: **Sun Pharmaceutical Industries, Inc.** · enrollment: 407 (actual)

## Conditions studied

- Alopecia Areata

## Interventions

- **DRUG:** CTP-543

## Key facts

- **NCT ID:** NCT05041803
- **Lead sponsor:** Sun Pharmaceutical Industries, Inc.
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2021-10-19
- **Primary completion:** 2024-07-18
- **Final completion:** 2024-07-18
- **Target enrollment:** 407 (ACTUAL)
- **Last updated:** 2025-11-21


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05041803

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05041803, "European Extension Study to Evaluate Safety and Efficacy of CTP-543 in Adults With Alopecia Areata". Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/clinical/NCT05041803. Licensed CC0.

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