Abstract: Monoclonal anti-TfR antibodies and antigen-binding fragments thereof for delivering an agent to the brain of a subject in need thereof are described. Also described are conjugates and fusion constructs containing the anti-TfR antibody or antigen-binding fragment thereof coupled to a therapeutic or diagnostic agent, such as a second antibody and antigen-binding fragment thereof, for treating or detecting a neurological disorder and/or delivering a therapeutic or diagnostic agent across the blood-brain barrier. Also described are nucleic acids encoding the antibodies, conjugates and fusion constructs and related recombinant host cells.

Abstract: Monoclonal anti-CD98 antibodies and antigen-binding fragments thereof for delivering an agent to the brain of a subject in need thereof are described. Also described are conjugates and fusion constructs containing the anti-CD98 antibody or antigen-binding fragment thereof coupled to a therapeutic or diagnostic agent, such as a second antibody and antigen-binding fragment thereof, for treating or detecting a neurological disorder and/or delivering a therapeutic or diagnostic agent across the blood-brain barrier. Also described are nucleic acids encoding the antibodies, conjugates and fusion constructs and related recombinant host cells.

Abstract: Monoclonal anti-PHF-tau antibodies and antigen-binding fragments thereof are described. Also described are nucleic acids encoding the antibodies, compositions comprising the antibodies, methods of producing the antibodies and using the antibodies for treating or preventing conditions such as tauopathies.