For the development of the new biomarkers using the technique of Mass-spectometry 5ml EDTA blood and a dry blood spot filter card are taken. To proof the correct Gaucher diagnosis in those patients where up to the enrollment in the study no genetic testing has been done, sequencing of Gaucher will be done. The analyses are done in the Albrecht-Kossel-Institute for Neuroregeneration (AKos), POB 100 888, Gehlsheimer Str. 20, 18055 Rostock (Germany)