MYC and cancer: Correlating protein abundance and gene expression with tumour content (Table S3A,B), followed by pre‐ranked gene set enrichment analysis (GSEA) separately performed on the proteomic and RNA‐Seq indicated the upregulation of cancer hallmark pathway members such as RNA metabolism, spliceosome, translation or MYC targets with higher tumour content, which was observable at both molecular layers with p < .05 (Table S3C and Figure 2B).