Abstract: The present invention relates generally to methods for selecting or designing a compound for modulating the aggregation of a Tau protein. The method comprising using computer-implemented molecular modelling means to compare the three-dimensional structure of a candidate compound with a three-dimensional structure of at least a part of the Tau protein comprising amino acids 315-378 and determine whether the candidate compound is able to simultaneously form non-covalent interactions with two or more of Leu315, Ser341, Glu342, Lys343, Phe346, Lys347, Val350, Ser352, Ile354, Lys369, Ile371, Glu372, Phe378 and Thr373. A candidate compound that is able to form said interactions is predicted to modulate the aggregation of the Tau protein or truncated form thereof.