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AC 699

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Drug Profile

AC 699

Alternative Names: AC-0699; AC-699

Latest Information Update: 11 May 2026

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At a glance

  • Originator Accutar Biotechnology
  • Class Antineoplastics
  • Mechanism of Action Estrogen receptor degraders
  • 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 HER2 negative breast cancer

Most Recent Events

  • 11 May 2026 AC 699 is still in phase I trials for HER2-negative-breast-cancer (Inoperable/Unresectable, Late-stage disease, Metastatic disease, Second-line therapy or greater) in USA (PO) (NCT05654532)
  • 28 Jan 2026 No recent reports of development identified for phase-I development in HER2-negative-breast-cancer(Inoperable/Unresectable, Late-stage disease, Metastatic disease, Second-line therapy or greater) in USA (PO)
  • 10 Dec 2024 Updated efficacy, pharmacodynamics and adverse events data from a phase I trial in HER2-negative-breast-cancer presented at the 47th Annual San Antonio Breast Cancer Symposium (SABCS-2024) .

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