Abstract: A vaccine composition for therapeutic use thereof on cancer patients includes a chemical conjugate of human recombining Epidermic Growth Factor (hrEGF) and a combining protein P64k for performing a conjugation reaction which produces said chemical conjugate in a controlled and reproducible manner. The preferred conjugate surprisingly increases the immunogenic activity causing significant increases in the anti-EGF antibody titers in humans, and provides a vaccine preparation with more than one type of effective dose presentation which enables the immunization dose per patient to be increased, but without involving an increase in immunization frequency and/or the number of immunization sites.

Abstract: The present invention describes the selection and use of antidiotypic monoclonal antibodies. (AB2) IgG type with the main characteristic of being highly connected to the idiotipic network and recognition of B and T human lymphocytes, which are major participants in the immune response. According to the previous statement the objective of this invention is to provide antidiotypic monoclonal antibodies IgG type connected to the immune network, able to interact with T and B lymphocytes and able to exert an immunoregulatory effect, irmunostimulation or immunosupression that can be used for immunotherapy of autoimune diseases, infectious diseases and cancer.