The Western blotting was carried out to verify the relative proteins expression levels of TNC, FSCN1, SERPINB1, ACTN1, RAB31, COL3A1, COL1A1 and CD36 in the independent verification samples (2 CSCC, 2 Bowen disease and 2 healthy skin tissues). Here, COL3A1 is linked to Bowen disease of the skin.