TARP Syndrome

A rare developmental defect during embryogenesis syndrome with characteristics of Robin sequence (micrognathia, glossoptosis, cleft palate), atrial septal defect, persistence of the left superior vena cava and talipes equinovarus. The phenotype is variable, some patients present with further dysmorphic characteristics (e.g. hypertelorism, ear abnormalities) while others do not have any key findings. Additional features, such as syndactyly, polydactyly, or brain anomalies (e.g. cerebellar hypoplasia), have also been reported. The syndrome is almost invariably lethal with affected males either dying prenatally or living just a few months. There is evidence this syndrome is caused by mutation in the RBM10 gene on chromosome Xp11.23.