# JC-virus (JCV) Epidemiology in Multiple Sclerosis (MS)

> **NCT01185717** · — · COMPLETED · sponsor: **Biogen** · enrollment: 7726 (actual)

## Conditions studied

- Multiple Sclerosis

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT01185717
- **Lead sponsor:** Biogen
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2010-09
- **Primary completion:** 2012-05
- **Final completion:** 2012-06
- **Target enrollment:** 7726 (ACTUAL)
- **Last updated:** 2014-06-02


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01185717

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01185717, "JC-virus (JCV) Epidemiology in Multiple Sclerosis (MS)". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT01185717. Licensed CC0.

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