Table 1.

Revised characteristics of the individual studies.

GEO ID	Normal : case	Contributor	Year
GSE4237	0 : 10 8 resected human pituitary tumor (1 recurrent + 1 nonrecurrent + 1 invasive + 1 noninvasive + 4 undefined) +2 HP75 tumor cell line	Hussaini IM	2006
GSE22812	0 : 13 Prolactin pituitary tumors (5 noninvasive + 2 invasive + 6 aggressive-invasive)	Wierinckx A	2011
GSE46311	0 : 16 16 somatotroph adenoma (also known as growth hormone-producing somatotroph pituitary adenomas)	Lekva T	2013
GSE36314	3 : 4 4 human prolactinoma 3 human normal pituitary	Oyesiku NM	2012
GSE51618	3 : 7 3 pituitary glands 7 NFPAs (nonfunctioning pituitary adenomas) (4 noninvasive NFPAs + 3 invasive NFPAs)	Feng J	2013