# Does Quality of Life Improve in Multiple Sclerosis Patients Treated With Interferon Beta-1a?

> **NCT00534261** · PHASE4 · COMPLETED · sponsor: **Biogen** · enrollment: 284 (actual)

## Conditions studied

- Relapsing Remitting Multiple Sclerosis

## Interventions

- **DRUG:** Interferon beta-1a

## Key facts

- **NCT ID:** NCT00534261
- **Lead sponsor:** Biogen
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 1999-11
- **Primary completion:** —
- **Final completion:** 2004-02
- **Target enrollment:** 284 (ACTUAL)
- **Last updated:** 2007-12-13


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00534261

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00534261, "Does Quality of Life Improve in Multiple Sclerosis Patients Treated With Interferon Beta-1a?". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT00534261. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*