BACKGROUND: Pyruvate dehydrogenase (PDH) deficiency is an uncommon condition responsible for primary refractory lactic acidosis, and PDH E1β (PDHB) subunit gene mutation rarely causes of PDH deficiency. We described a missense mutation of PDHB gene in a neonate with PDH deficiency, and verified the mutation damages PDH activity in vitro. METHODS: Whole exome sequencing (WES) was used to discover the missense mutation. We constructed the recombinant eukaryotic recombinant expression vector, the phage-PDHB-wt/mut, containing human full-length wi...
