The present invention provides anti-CD73 binding molecules, such as antibodies and their
antigen-binding fragments. [Solution] Provided are isolated binding molecules or
antigen-binding fragments thereof that contain an
antibody VL and specifically bind to CD73 having a specific sequence. Furthermore, pharmaceutical formulations comprising the disclosed composition, as well as methods for diagnosing and treating diseases associated with CD73 expression, such as
cancer, are also provided. Such diseases can be treated, for example, by direct therapy with the disclosed anti-CD73 binding molecule (e.g., a naked
antibody or
antibody-
drug conjugate that binds to CD73), by
adjuvant therapy with other
antigen-binding anticancer agents such as
immune checkpoint inhibitors (e.g., anti-CTLA-4 and anti-PD-1
monoclonal antibodies), and / or by
combination therapy in which the anti-CD73 molecule is administered before, after, or concurrently with
chemotherapy.