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QLS 4131

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Drug Profile

QLS 4131

Alternative Names: QLS-4131

Latest Information Update: 17 Feb 2026

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At a glance

  • Originator Qilu Pharmaceutical
  • Class Antineoplastics; Immunotherapies; Recombinant fusion proteins; Trispecific antibodies
  • Mechanism of Action Antibody-dependent cell cytotoxicity; Cytotoxic T lymphocyte stimulants
  • 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 Multiple myeloma

Most Recent Events

  • 06 Dec 2025 Efficacy and adverse events data from a phase-I clinical trials in Multiple myeloma presented at the 67th American Society of Hematology Annual Meeting and Exposition(ASH-Hem-2025)
  • 03 Jun 2025 Qilu Pharmaceutical plans to initiate a phase I trial for Systemic Lupus Erythematosus (Treatment experienced) (Injection) (NCT07001839)
  • 25 Apr 2025 Phase-I clinical trials in Multiple myeloma (Second-line therapy or greater, Recurrent) in China (IV) prior to April 2025 (NCT06500507)

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