We tested other SLC26A9 variants that had been previously shown in GWAS to contribute to the variability of other phenotypes, such as meconium ileus (rs4077468, rs4077469, rs7419153, rs12047830, rs12741299) (Sun et al., 2012) and CFRD (rs4077468, rs4077469, rs1874361) (Blackman et al., 2013). This evidence concerns the gene SLC26A9 and intestinal obstruction in the newborn due to guanylate cyclase 2C deficiency.