Recent study demonstrated that Gli1 was present only in the nuclei of cancer-associated fibroblasts in OSCC, indicating that HH signaling is active in the progression of OSCC.200 Furthermore, endophytic-type parenchyma of OSCC possessed a stronger expression of Shh and Ptch1 than exophytic-type parenchyma of OSCC.201. The gene discussed is PTCH1; the disease is cancer.