# Study of DS-5670a (COVID-19 Vaccine) in Japanese Healthy Adults and Elderly Subjects

> **NCT04821674** · PHASE1,PHASE2 · COMPLETED · sponsor: **Daiichi Sankyo Co., Ltd.** · enrollment: 142 (actual)

## Conditions studied

- Covid19

## Interventions

- **BIOLOGICAL:** DS-5670a
- **BIOLOGICAL:** Placebo

## Key facts

- **NCT ID:** NCT04821674
- **Lead sponsor:** Daiichi Sankyo Co., Ltd.
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE1,PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2021-03-15
- **Primary completion:** 2021-08-13
- **Final completion:** 2022-07-14
- **Target enrollment:** 142 (ACTUAL)
- **Last updated:** 2022-08-30


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04821674

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04821674, "Study of DS-5670a (COVID-19 Vaccine) in Japanese Healthy Adults and Elderly Subjects". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT04821674. Licensed CC0.

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