TCF7 and basal cell carcinoma: Furthermore, seven genes associated with cancer cell invasion were detected in the basal cell carcinoma pathway, including frizzled 4 (FZD4), segment polarity protein dishevelled 3 (DVL3), glycogen synthase kinase 3 beta (GSK3B), axin 1 (AXIN1), adenomatosis polyposis coli protein (APC2), catenin beta 1 (CTNNB1), and transcription factor 7 (TCF7).