The expression levels of these genes (apart from MRPS17, MRPL18 MRPL51 in LUAD) were correlated with tumour purity in NSCLC (LUAD: MRPS26: P = 8.25E-08, partial rho = 0.238; LUSC: MRPS26: P = 6.99E-20, partial rho = 0.401; MRPS17: P = 4.89E-06, partial rho = 0.207; MRPL18: P = 5.9E-03, partial rho = 0.126; MRPL51: P = 3.16E-05, partial rho = 0.189) (Fig 4). This evidence concerns the gene MRPL18 and neoplasm.