Trial of BDC-1001 +/- Pertuzumab in Subjects With HER2-Positive Metastatic Breast Cancer

BDC-1001 is an immune-stimulating antibody conjugate (ISAC) designed to be delivered systemically (intravenously) and act locally by targeting HER2-expressing tumors and related metastatic disease for destruction by the innate and adaptive immune systems. BDC-1001 consists of an investigational biosimilar of the humanized monoclonal antibody (mAb) trastuzumab that is chemically conjugated to a toll-like receptor (TLR)7/8 agonist (payload) with an intervening non-cleavable, cell membrane impermeable linker.

Pertuzumab is a monoclonal antibody that targets HER2 and prevents dimerization of HER2 with other members of the HER family (HER1, HER3, and HER4), thereby blocking ligand-activated downstream signaling.