Table 1.

Circulating miRNAs as diagnostic markers for different human cancers

Disease	miRNA	Expression level	Contributors
Breast cancer	miR-29a	Up-regulation	Wu et al., J Biomed Biotechnol. (2010) [76]
	miR-21		Asaga et al., Clin Chem. (2011) [77]
Lung cancer	miR-21,1254,574-5p	Up-regulation	Wei et al., Chin J Cancer. (2011) [79]
			Foss et al., J Thorac Oncol. (2011) [78]
Hepatocellular carcinoma	miR-16,miR-199a	Down-regulation	Qu et al., J Clin Gastroenterol. (2011) [80]
	miR-21,miR-122,miR-223	Up-regulation	Xu et al., Mol Carcinog. (2010) [81]
Malignant melanoma	miR-221	Up-regulation	Kanemaru et al., J Dermatol Sci. (2011) [82]
Gastric cancer	miR-1,20a,27a,34,423-5p	Up-regulation	Liu et al., Eur J Cancer. (2011) [83]