Whole exome sequencing TCRA T cell fraction values were positively correlated with RNA-Seq data derived enrichment scores for the T cell (rho = 0.53; P = 0.063), CD8 + T cell (rho = 0.79; P = 0.0013) and cytotoxic lymphocyte (rho = 0.69; P = 0.0095) tumour microenvironment cell types (Supplementary Fig. 12). The gene discussed is CD8A; the disease is neoplasm.