FZD6 plays a pivotal role in the growth and guidance of the nail plate in humans by acting as a molecular switch between different Wnt pathways. Inherited isolated nail anomaly manifesting with onychauxis and onycholysis is a rare condition, caused by mutations in the gene FZD6, encoding membrane-bound Wnt receptor protein. The overexpression of FZD6 may play an important role in the development of Colorectal cancer (CRC). FZD6 repressed gastric cancer cell proliferation and migration via activating non-canonical wnt pathway. FZD6 plays crucial roles in human tumorigenesis.