Hierarchic clustering according to CDKN2A genomic status in DLBCL with ABC phenotype and survival. (A) Supervised hierarchic clustering according to CDKN2A status in the activated B-cell (ABC) DLBCL subtype. (B) OS probability in the subgroup of patients with ABC-DLBCL analyzed by Affymetrix U133A. (C) Unsupervised hierarchic clustering according to the expression of 27 genes belonging to the ABC 9p21 signature previously defined from array experiments. (D) Unsupervised hierarchic clustering according to the expression of this set of genes in an independent series of ABC-DLBCL samples.³  Green boxes indicate samples with CDKN2A deletions; yellow boxes, samples without CDKN2A deletions.