# A Study of Ad26.COV2.S in Healthy Adults (COVID-19)

> **NCT04894305** · PHASE1 · COMPLETED · sponsor: **Janssen Vaccines & Prevention B.V.** · enrollment: 380 (actual)

## Conditions studied

- Healthy

## Interventions

- **BIOLOGICAL:** Ad26.COV2.S

## Key facts

- **NCT ID:** NCT04894305
- **Lead sponsor:** Janssen Vaccines & Prevention B.V.
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2021-05-25
- **Primary completion:** 2021-12-08
- **Final completion:** 2021-12-08
- **Target enrollment:** 380 (ACTUAL)
- **Last updated:** 2021-12-22


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04894305

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04894305, "A Study of Ad26.COV2.S in Healthy Adults (COVID-19)". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT04894305. Licensed CC0.

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