#$%^&*AU2013100532B420131128.pdf#####H:\rxs\nirwoven\NRPodtbl\DCC\RXSI5072064_1.Ac Abstract The present invention relates to crystalline forms and hydrates of 2-Amino-2-[2-(4-C 2-20-alkylphenyl)ethyl]propane-1,3-diol, and to the use thereof, in particular in the treatment or prevention of various autoimmune conditions,