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HSK 39004

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Drug Profile

HSK 39004

Alternative Names: AN-01 - AirNexis Therapeutics; HSK-39004

Latest Information Update: 26 Feb 2026

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At a glance

  • Originator Haisco Pharmaceutical Group
  • Class Antiasthmatics
  • Mechanism of Action Type 3 cyclic nucleotide phosphodiesterase inhibitors; Type 4 cyclic nucleotide phosphodiesterase inhibitors
  • 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 Asthma; Chronic obstructive pulmonary disease

Most Recent Events

  • 25 Feb 2026 Haisco Pharmaceutical Group plans a phase II trial for Chronic obstructive pulmonary disease (Inhalation, Powder) in China in March 2023 , (NCT07425210)
  • 09 Jan 2026 HSK 39004 licensed to AirNexis Therapeutics worldwide except Greater China
  • 13 Aug 2025 Phase-II clinical trials in Asthma (Inhalation) prior to August 2025 (Haisco Pharmaceutical pipeline, August 2025).

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