Table I.

Statistical information of the sequencing data.

Group	Accession no.	No. of original reads	No. of miRNA alignments	No. of miRNA types
Metastatic melanoma	GSM893568	402556	17847	259
	GSM893576	1226137	18005	123
	GSM893577	708653	16493	262
	GSM893578	395686	31687	279
Primary melanoma	GSM893564	97403	85049	338
	GSM893566	464804	40816	251
	GSM893573	1279059	40267