Mutations in PIGS, Encoding a GPI Transamidase, Cause a Neurological Syndrome Ranging from Fetal Akinesia to Epileptic Encephalopathy. - Nguyen TTM; Murakami Y; Wigby KM; Baratang NV; Rousseau J; St-Denis A; Rosenfeld JA; Laniewski SC; Jones J; Iglesias AD; Jones MC; Masser-Frye D; et al. (American journal of human genetics, 2018)