BioAtla and F1 Oncology reported a global license agreement to combine BioAtla's CAB technology with F1 Oncology's proprietary technologies to develop and commercialize chimeric antigen receptor T-cell (CAR-T) therapies and other ACTs for the treatment of cancer. BioAtla has granted F1 Oncology an exclusive worldwide license under patents and know-how controlled by BioAtla to discover, develop, manufacture and commercialize ACT preparations and treatments for cancer. The financial terms of this license to F1 Oncology include a mid-single digit royalty outside of China, Hong Kong, Macau and Taiwan (the Territory). Within the Territory, the license is royalty-free and fully paid, and BioAtla shares in the product revenue. In exchange for the license rights, as well as BioAtla's agreement not to compete in ACTs, BioAtla received a majority, non-controlling interest of the outstanding capital stock of F1 Oncology and has no funding or financial obligation. BioAtla also has a conditional and time-limited option to acquire at a fixed valuation all of the outstanding equity securities of F1 Oncology held by all other investors. BioAtla and F1 Oncology said that they have identified CAR-T and other ACT therapies as potential opportunities for the application of CAB technology. BioAtla has demonstrated in preclinical studies that CAB antibodies can be constructed in the same single chain format used by CAR-Ts and can retain their selectivity for binding under conditions representative of the tumor microenvironment (TME) and with minimal to no detectable binding in normal cell conditions. CARs are constructs that contain an antigenbinding domain of an antibody fused to a strong T-cell activator domain. T-cells modified with the CAR construct can bind to the antigen and be stimulated to attack the bound cells. On-target, off-tumor toxicity has largely limited current CAR-T therapies to target blood cancers such as leukemia and some lymphomas. While CAR-T related toxicities are multifactorial and complex, CAR-T cells containing CAB CAR domains targeting solid tumor antigens would be intended to reduce on-target, off-tumor toxicity and potentially increase patient safety.
BioAtla, Inc. is a clinical-stage biopharmaceutical company focused on developing antibody-based therapeutics for the treatment of solid tumor cancer. The Companyâs product candidates include Mecbotamab vedotin (BA3011), Ozuriftabmab vedotin (BA3021), BA3071, and BA3182. Its lead product candidate, BA3011, is a conditionally active biologics (CAB) antibody-drug conjugates (ADC) that targets AXL, which is a protein kinase receptor. The BA3071 is a potential therapeutic for multiple solid tumor types, including soft tissue and bone sarcoma, and non-small cell lung cancer (NSCLC). BA3021 is developing a CAB antibody drug conjugate directed against a receptor tyrosine kinase such as orphan receptor 2 (ROR2). BA3071 is a CAB anti-CTLA-4 antibody that is being developed as a therapeutic for multiple solid tumor indications. BA3182 is designed with an EpCAM binding domain and a CD3 binding domain, both binding domains with CAB activity (Dual-CAB), for the treatment of advanced adenocarcinoma.
BIOATLA, INC. 
