We analyzed microarray data from the Cavalli et al., primary medulloblastoma cohort (n = 144) which defined MBGRP3 subtypes (Group 3α, 3β, 3γ) based on MYC status (balanced, loss, gain, and amplification) with the 3γ subtype containing most MYC gained/amplified samples.2 Here, we identified 17 genes associated with SGP (referred to as SGP gene signature) that were significantly altered across MBGRP3 (Supplementary Figure 7A). This evidence concerns the gene MYC and medulloblastoma.