# Avonex 15 Year Long Term Follow-up Study

> **NCT00525343** · — · COMPLETED · sponsor: **Biogen** · enrollment: 122 (actual)

## Conditions studied

- Multiple Sclerosis

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT00525343
- **Lead sponsor:** Biogen
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2007-03
- **Primary completion:** —
- **Final completion:** 2008-09
- **Target enrollment:** 122 (ACTUAL)
- **Last updated:** 2010-03-08


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00525343

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00525343, "Avonex 15 Year Long Term Follow-up Study". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT00525343. Licensed CC0.

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