The United States of America, as represented by the Secretary, Department of Health and Human Services;The United States of America; as represented by the Secretary; Department of Health and Human Services;University of Maryland, College Park
Antibodies and antigen binding fragments that specifically bind to IL-7Rα are disclosed. Nucleic acids encoding the antibodies and antigen binding fragments, and vectors including the nucleic acid molecules are also provided. Methods for detecting a ca cancer or a cell that expresses IL-7Rα using the antibodies and antigen binding fragments are disclosed, as is the use of the antibodies and antigen binding fragments to prevent and/or treat a subject with a cancer that expresses IL-7Rα, such as acute lymphoblastic leukemia.