Drug intelligence / Profile preview

JAB-BX400

Development stage
Preclinical
Lead developer
Jacobio Pharmaceuticals Co., Ltd.
Modality
Small Molecules, Cytotoxic ADCs → Antibody-Drug Conjugates (ADCs) → Antibody Conjugates → Antibody-Based Therapeutics
Administration
Intravenous
01

Overview

JAB-BX400 is a preclinical-stage investigational antibody-drug conjugate (ADC) developed by Jacobio Pharma. It is an immune-stimulating ADC (iADC) that targets the human epidermal growth factor receptor 2 (HER2) and delivers a stimulator of interferon genes (STING) agonist as its payload. The design aims to selectively deliver the STING agonist into HER2-expressing tumor cells, thereby locally activating innate and adaptive antitumor immune responses while minimizing systemic immune-related toxicity. Preclinical studies have shown that JAB-BX400 is effective against DS8201-resistant tumor models and in "cold" tumors such as the SK-OV-3 xenograft model, which are typically less responsive to immunotherapy[2][4][5][6][7]. The drug barely releases free payload in plasma, reducing off-target effects and cytokine release compared to competitors[7]. An IND application for clinical trials is planned for 2024–2025[2].

Other names
HER2-STING iADCHER-2-STING iADCHER 2-STING iADC
02

Targets

STING (Stimulator of interferon genes protein)ERBB2 (Erb-b2 receptor tyrosine kinase 2)

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