RFX6 and Hypoplastic pancreas-intestinal atresia-hypoplastic gallbladder syndrome: The genetic studies done for Mitchell-Riley syndrome (RFX6 gene locus) confirmed presence of a homozygous mutation in the RFX6 gene (c.1153C>T p.Arg385*), a previously unreported homozygous mutation in exon 11 of the RFX6 gene.