Table 1. A list of 19 genes that are differentially expressed in more than 4 cancer types and their relevance to different cancer types.

Gene ID	Direction of regulation							Reported to be related to cancers
	Breast	Colon	Kidney	Lung	Pancreas	Prostate	Stomach	B.	C.	K.	L.	Pa.	Pr.	S.	Other cancer types
CDC2	↑	↑		↑	↑		↑	*	*		*		*	*	liver cancer; squamous cell carcinoma;nasopharyngeal carcinoma
AURKA	↑	↑		↑		↑	↑	*	*		*	*	*	*	ovarian cancer;esophageal squamous cancer;uterine cancer;bladder cancer
ABCA8	↓	↓	↓	↓			↓
DPT	↓	↓		↓		↓	↓
TOP2A	↑	↑		↑	↑		↑	*	*					*	bladder cancer;ovarian cancer; squamous cell carcinoma
MMP7		↑		↑	↑		↑	*	*		*	*		*	ovarian cancer; oral cancer; rectal cancers; bladder cancer; liver cancer
MAD2L1		↑		↑	↑		↑		*					*	thyroid carcinomas; oesophageal squamous cancer
KLF4	↓	↓		↓			↓	*	*					*	esophageal cancer;bladder cancer
MELK	↑			↑	↑		↑	*							brain cancer;endometrial cancer
C7		↓	↓	↓		↓		*					*		uterine cervical cancers
ECT2		↑		↑	↑		↑					*
PRC1	↑			↑	↑		↑	*
RRM2	↑			↑	↑		↑				*	*	*
ALDH1A1	↓	↓		↓			↓					*			non-small cell bronchopulmonary cancer; liver cancer; T-cell leukemia
PMAIP1	↑	↑		↑	↑				*		*	*
FABP4	↓	↓		↓			↓	*							Bladder cancer;
COL11A1	↑	↑		↑	↑										adenomas;
TTK		↑		↑		↑	↑
CENPF	↑			↑	↑		↑	*

“↑” indicates up-regulated gene expression in the corresponding cancer type while “↓”is down-regulation. “*” indicates that a gene has been reported as relevant to the corresponding cancer type. “B.” for breast cancer; “C.” for colon cancer; “K.” for kidney cancer”; “L.” for lung cancer”; “Pa.” for pancreatic cancer”; “Pr.” for prostate cancer” and “S.” for stomach cancer”.