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. 2017 Oct 18;7:13421. doi: 10.1038/s41598-017-13644-1

Figure 2.

Figure 2

Derivation of the four consensus medulloblastoma molecular subgroups in a training cohort (n = 220) using genome-wide Illumina 450k DNA methylation microarray data. (a) Principal Component Analysis (PCA) visualization of groups identified using consensus NMF clustering. Subgroup members are shown in their consensus colours (blue (WNT); red (SHH); yellow (Grp3) and green (Grp4)). Covariance spheroids were plotted at 95% confidence intervals. (b) Silhouette plot demonstrates robustness of each group (number and average silhouette width are shown).