The present invention relates to antibodies that immunospecifically bind to phospho-Akt and certain p-Akt substrates. The invention encompasses human and humanized forms of the antibodies and their use in treating cancers and other proliferative disorders. The invention also relates to p-Akt-derived peptides useful for preparing the antibodies. Methods and compositions for detecting, diagnosing, treating or ameliorating a disease or disorder, especially cancer and other proliferative disorders using the present antibodies also are disclosed.
