Alternative titles and symbols : Mental retardation, severe, and absent nails of hallux and pollex;
Description : Temple-Baraitser syndrome is a rare developmental disorder characterized by severe
mental retardation and anomalies of the first ray of the upper and lower limbs with
absence/hypoplasia of the nails. Various dysmorphic facial features have been reported
(summary by Jacquinet et al., 2010).;
Inheritance : Autosomal dominant;
Molecular basis : Caused by mutation in the voltage-gated potassium channel, subfamily H, member 1 gene
(KCNH1, 603305.0001);