Pathways that followed were ligand-receptor interactions (IHH, PTCH1) (p-value = 5.76 × 10−5) and signalling in basal cell carcinoma (BMP2, STK36, PTCH1) (p-value = 6.73 × 10−5) (Table 2). The gene discussed is PTCH1; the disease is basal cell carcinoma.