CTSD and leukemia: Among these genes, gene MPO (with column number 1,720), CST3 (with column number 1,823), ZYX (with column number 4,788), CTSD (with column number 2,062), CD79A/MB-1(with column number 2,583), LYZ (with column number 6,738) in Leukemia dataset are important biomarkers as these are selected by different filter methods mentioned in Fig. S4.