PDK1 and occult macular dystrophy: From the up-regulated gene cluster 7, we identified OMD, JAK2, MMP3 and CSFI while from up-regulated gene cluster 17 we identified CLIP and SOD2. From the down-regulated gene cluster 12, we identified SOX9, APCDD1L, NCEH1 and LRP8 while from down-regulated gene cluster 15 we identified PDK1. The selected genes identified in the data set and their function in osteogenic differentiation are listed in Table 1.