Ambrx Biopharma is a clinical-stage biopharmaceutical company that specializes in an expanded genetic code technology platform to create engineered precision biologics. These include next-generation antibody-drug conjugates (ADCs), bispecifics, targeted immuno-oncology therapies, novel cytokines, and long-acting therapeutic peptides. The company is advancing a robust portfolio of clinical and preclinical programs across multiple therapeutic areas, with a focus on optimizing efficacy, safety, and ease of use.
Ambrx's lead product candidate is ARX788, a HER2-directed ADC for metastatic HER2-positive breast cancer. Other key candidates in development include ARX517 (an ADC targeting PSMA for metastatic castration-resistant prostate cancer), ARX788 (a HER2-directed ADC for breast cancer), and ARX305 (an ADC targeting CD-70 for renal cell carcinoma). In March 2024, Ambrx was acquired by Johnson & Johnson for approximately USD 2 billion, providing J&J the opportunity to design, develop and commercialize targeted oncology therapeutics using Ambrx's proprietary ADC technology.
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