Article Female female 57 gene expression Humans 56 human 56 genetics 53 controlled study 49 male 49 Male 47 adult 45 major clinical study 42 middle aged 39 Middle Aged 38 pathology 31 unclassified drug 29 metabolism 27 gene expression regulation 25 aged 24 Aged 23 case control study 22 Case-Control Studies 21 Gene Expression Regulation, Neoplastic 21 prognosis 20 Prognosis 19 human cell 19 human tissue 19 cancer prognosis 18 microRNA 18 real time polymerase chain reaction 18