Used in targeted cancer therapy, particularly for tumors overexpressing SLC34A2, such as certain lung and ovarian cancers. Binds specifically to the SLC34A2 protein on cancer cell surfaces, enabling precise delivery of cytotoxic agents when conjugated to drugs. Supports diagnostic imaging by helping locate tumor tissues expressing the target antigen. Also utilized in research to study phosphate transport mechanisms and tumor biology. Shows potential in antibody-dependent cellular cytotoxicity (ADCC) by marking cancer cells for immune destruction.