rs10186876 (Pcombined=9.75 × 10−11) lies 15 kb upstream of LRPPRC (leucine-rich pentacotripeptide-containing), which has been implicated in the French-Canadian variant of Leigh Syndrome (MIM: 220111), a cytochrome C oxidase deficiency with features including developmental delay, hypotonia and weakness29. This evidence concerns the gene LRPPRC and hyperinsulinemic hypoglycemia, familial, 4.