# A Study to Find the Dose and Assess the Immune Response and Safety of a Vaccine Against Influenza in Healthy Younger and Older Adults

> **NCT06431607** · PHASE2 · COMPLETED · sponsor: **GlaxoSmithKline** · enrollment: 845 (actual)

## Conditions studied

- Influenza, Human

## Interventions

- **BIOLOGICAL:** F2G22B/DL001Z
- **BIOLOGICAL:** F2H23D/DL001Z-NH
- **BIOLOGICAL:** F2H23B/DL001Z-NH
- **BIOLOGICAL:** F2H23H/DL001Z
- **COMBINATION_PRODUCT:** FDQ23A-NH (Flu D-QIV)
- **BIOLOGICAL:** GSK5800544A
- **COMBINATION_PRODUCT:** Flu D-TIV
- **BIOLOGICAL:** F2H23A/DL001Z-NH
- **BIOLOGICAL:** F2H23G/DL001Z
- **COMBINATION_PRODUCT:** Fluzone HD Quadrivalent
- **COMBINATION_PRODUCT:** Fluzone HD

## Key facts

- **NCT ID:** NCT06431607
- **Lead sponsor:** GlaxoSmithKline
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2024-05-23
- **Primary completion:** 2024-12-27
- **Final completion:** 2025-06-04
- **Target enrollment:** 845 (ACTUAL)
- **Last updated:** 2026-03-10


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT06431607

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT06431607, "A Study to Find the Dose and Assess the Immune Response and Safety of a Vaccine Against Influenza in Healthy Younger and Older Adults". Retrieved via AI Analytics 2026-06-24 from https://api.ai-analytics.org/clinical/NCT06431607. Licensed CC0.

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