First for high risk group, no significant difference was found between PTCH1 positive and negative expression groups in terms of mean age (P-value=0.512), sex (P-value =0.868), or BCC subtype (Levene P-value=0.105, F(5,34)=0.69 with P-value=0.64). Here, PTCH1 is linked to skin basal cell carcinoma.