Only minimally SBIR involved - and that some considerable time ago - Ambrx Biopharma Inc., is a clinical-stage biologics company structured around discovery and development of engineered precision biologics using its proprietary expanded genetic code technology platform. The company's lead product candidate is ARX788, an anti-HER2 antibody-drug conjugate (ADC), which is investigated in various clinical trials for the treatment of breast cancer, gastric/gastroesophageal junction cancer, and other solid tumors, including ongoing Phase 2/3 clinical trials for the treatment of HER2-positive metastatic breast cancer and gastric cancer. It is also developing two earlier-stage product candidates, including ARX517, an anti-PSMA ADC, which is in a Phase 1 clinical trial for the treatment of prostate cancer and other solid tumors; and ARX305, an anti-CD70 ADC in investigational new drug-enabling studies for the treatment of renal cell carcinoma and other cancers. In addition, the company is developing ARX102, an immuno-oncology IL-2 pathway agonist to stimulate the patient's own immune system by targeting the ß and gamma receptors on the cytotoxic T cell. Ambrx Biopharma Inc. has collaborations with Bristol Myers Squibb Company; AbbVie Inc.; BeiGene; Sino Biopharmaceutical Co., Ltd.; NovoCodex; and Elanco Animal Health. Now headquartered in La Jolla, California, the company was incorporated in 2003
