CDK4 and neoplasm: Using the median value of relative exon junction expression levels in all 36 samples as a cut-off, we found that 'ACTG2.aAug05' expression correctly classified 89% (16/18 tumor, 16/18 normal) of the samples (P = 5.2 × 10-6, Figure 2C), whereas 'CDK4.aAug05' correctly classified 78% (14/18 tumor, 14/18 normal) of the samples (P = 2.2 × 10-3, Figure 2D).