SLC26A9 and intestinal obstruction in the newborn due to guanylate cyclase 2C deficiency: Identified in a genome-wide association study (GWAS) of intestinal obstruction (meconium ileus) in CF7, the C allele of rs7512462 in intron 5 of Solute Carrier Family 26 member 9 (SLC26A9) (chr1:205899595, GRCh37) has since consistently demonstrated a beneficial effect for several CF co-morbidities, including in the exocrine2,3 and endocrine pancreas4,22.