# Study Comparing the Safety of ASP2151 to Valacyclovir and Placebo in Healthy Volunteers

> **NCT00870441** · PHASE1 · TERMINATED · sponsor: **Astellas Pharma Inc** · enrollment: 442 (actual)

## Conditions studied

- Safety of ASP2151

## Interventions

- **DRUG:** ASP2151
- **DRUG:** Valacyclovir
- **DRUG:** Placebo

## Key facts

- **NCT ID:** NCT00870441
- **Lead sponsor:** Astellas Pharma Inc
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** TERMINATED
- **Start date:** 2009-03
- **Primary completion:** 2010-04
- **Final completion:** 2010-04
- **Target enrollment:** 442 (ACTUAL)
- **Why stopped:** Study terminated due to treatment-emergent serious adverse events
- **Last updated:** 2013-02-28


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00870441

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00870441, "Study Comparing the Safety of ASP2151 to Valacyclovir and Placebo in Healthy Volunteers". Retrieved via AI Analytics 2026-05-25 from https://api.ai-analytics.org/clinical/NCT00870441. Licensed CC0.

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