Table 1.

Abnormal microRNAs (miRNAs) and the biological processes of keloid scarring

miRNA	Regulation	Target genes	References
miR‐7	DOWN	Type I collagen	67
miR‐29a	DOWN	Type I and type III collagen	69
miR‐199a	DOWN	Not mentioned	60, 61
miR‐21	UP	PTEN, FasL, PDCD4	73, 74, 75
miR‐196a	UP	COL1A1 and COL3A1	65
miR‐152	UP	Unsure	77
miR‐200c	DOWN	TGF‐β1	79, 80