Anti-AMHR2 mAb BCG007

7E1 is a novel anti-human AMHR2 blocking antibody with desirable pharmacokinetic and pharmacodynamic properties. 7E1 may potentially find broad application for a range of cancer indications in which AMH signaling is implicated.

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  • Highlights of Anti-AMHR2 mAb
  • About AMHR2

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    Highlights of Anti-AMHR2 mAb
    • Fully human Anti-AMHR2 mAbs: AMHR2 knock-out fully human RenMab mice.
    • Higher affinity, improved specificity and ADCC effect than Murlentamab analog.
    • Distinct binding epitope associated with efficient inhibition of AMH binding and signaling.
    • Great endocytosis activities.
    • PK in AMHR2-humanized mice: T1/2 > 14 days.
    • Superior in vivo efficacy than Murlentamab analog.
    • No signs of systemic toxicity.
    • Good Drugability.
    7E1 significantly inhibits the AMH-activated signal in luciferase reporter assay
    7E1 shows much longer half-life than Murlentamab analog (14.8 days vs 6.8 days)
    7E1 inhibits tumor growth in hAMHR2 ID8 models in a dose-dependent manner
    Treatment i.p biw*4 Tumor size on day 14 TGITV
    Vehicle 2915±372 mm3 -
    Murlentamab analog 20 mg/kg 1965±503 mm3 33.3%
    7E1 10 mg/kg 1504±434 mm3 49.5%
    7E1 20 mg/kg 1261±205 mm3 58.0%
    About AMHR2

    Ovarian cancer, comprising 85-90% of malignant gynecologic tumors, is highly prone to metastasis and has a significant mortality rate. Unfortunately, 70% of ovarian cancer patients are diagnosed in advanced stages, with most experiencing recurrence despite effective initial treatment. As such, the need for drugs to address ovarian cancer is urgent. AMHR2, a type I transmembrane protein with low-level expression in normal tissues and high expression in ovarian, cervical, and endometrial carcinomas, is an excellent potential target for broad-spectrum tumor treatment. Its ligand, AMH, induces phosphorylation of SMAD4 to activate a series of signaling pathways. Therefore, AMHR2 antibodies that promote apoptosis or directly eliminate tumor cells show great promise for treating ovarian cancer and could lead to significant clinical benefits.

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