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JS 019

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Drug Profile

JS 019

Alternative Names: JS-019

Latest Information Update: 12 Feb 2026

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At a glance

  • Originator Beijing Eirene Biotech
  • Developer Beijing Eirene Biotech; Suzhou Kebo Ruijun Biotechnology
  • Class Antineoplastics; Immunotherapies; Monoclonal antibodies
  • Mechanism of Action Antibody-dependent cell cytotoxicity; CD39 antigen 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 I/II Hypereosinophilic syndrome
  • No development reported Solid tumours

Most Recent Events

  • 06 Dec 2025 Adverse events and efficacy data from a phase I/II trial in Hypereosinophilic syndrome presented efficacy and adverse events data from the trial at the 67th American Society of Hematology Annual Meeting and Exposition (ASH-Hem-2025)
  • 28 Apr 2025 No recent reports of development identified for phase-I development in Solid-tumours(Late-stage disease, Monotherapy, Second-line therapy or greater) in China (IV, Infusion)
  • 31 Mar 2022 Phase-I clinical trials in Solid tumours (Monotherapy, Late-stage disease, Second-line therapy or greater) in China (IV) (NCT05374226)

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