Unsupervised hierarchical clustering of tumor and NAT by the expression level of the biomarkers investigated distinguished two main groups of samples (Fig. 1a), one enriched in tumors (85% of the samples; Fig. 1a, to the left), and the other one containing the majority of NAT (88% of NAT; Fig. 1a to the right). Here, BRD2 is linked to neoplasm.