The present invention is related to methods and pharmaceutical compositions for the therapeutic and diagnostic use in the treatment of diseases and disorders which are caused by or associated with neurofibrillary tangles. In particular, the invention relates to pharmaceutical composition comprising an antigenic peptide, particularly an antigenic phospho-peptide mimicking a major pathological phospho-epitope of protein tau, for the therapeutic and diagnostic use in the treatment of tauopathies including Alzheimer's Disease.
