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PG4

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Drug Profile

PG4

Alternative Names: PG4 pneumococcal vaccine

Latest Information Update: 29 Nov 2025

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At a glance

  • Originator Pfizer
  • Class Antivirals; Pneumococcal vaccines
  • Mechanism of Action Immunostimulants
  • Orphan Drug Status

    Orphan designation is assigned by a regulatory body to encourage companies to develop drugs for rare diseases.

    No
  • New Molecular Entity Yes

Highest Development Phases

  • Phase II Pneumococcal infections

Most Recent Events

  • 30 Jul 2025 Phase-II clinical trials in Pneumococcal infections (Prevention, In infants) in USA and Puerto Rico (Injection) (NCT06531538)
  • 22 Jul 2025 Phase-I clinical trials in Pneumococcal infections (Prevention, In adults, In the elderly) in USA (Injection) (NCT07086677)

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