Consensus clustering overlap matrices for the 3-cluster model.(A) Sample overlap comparing sample assignment between HC and SOMs. Entries are the number of samples in overlapping clusters. (B) Marker overlap between HC and SOMs. Gene markers for k = 3 clusters using HC and SOMs were evaluated to assess the number of markers held in common between clustering techniques. Entries are presented as: residual [no. observed | no. expected], where residual = (observed −expected) / sqrt (expected).