PTEN hamartoma tumor syndrome

A syndrome characterized as a spectrum of disorders (Cowden syndrome, Bannayan-Riley-Ruvalcaba syndrome, PTEN-related Proteus syndrome, and Proteus-like syndrome) caused by germline mutations of the PTEN gene.

nonsyndromic congenital nail disorder 4

A nonsyndromic congenital nail disorder that is characterized by complete absence or severe hypoplasia of all fingernails and toenails without significant bone anomalies, and that has_material_basis_in homozygous or compound heterozygous mutation in the R-spondin-4 gene on chromosome 20p13.