SHH and breast angiosarcoma: Compared to the normal control, the mRNA expression of the Shh signaling pathway-related factor GLI2 and EMT-related factors Snail, vimentin, and α-SMA was significantly increased and E-cadherin expression significantly decreased (all P < 0.05) in the liver tissue of BA patients, and there was no significant difference in the expression of GLI1 and Slug (Table 2 and Figure 1).