Fig. 3

MCI patients were separated according to follow-up diagnosis. From 26 patients diagnosed as MCI in the first place, 2 remained stable and 12 have progressed to AD (see Additional file 1: Table S3). miRNA expression levels were combined using log regression approach. Mean of miRNA signature values for each group is shown. Statistical significance was evaluated by the Mann-Whitney U test. P values < 0.05 were considered statistically significant