In functional IF, patients experienced chronic intestinal pseudo‐obstruction syndrome (n = 1), microvillus inclusion disease (n = 1), protein‐losing enteropathy based on primary intestinal lymphangiectasia (n = 1), tricho‐hepato‐enteric syndrome (n = 1), filamin A mutation with pseudo‐obstruction (n = 1), and esophageal atresia with motility problems (n = 1), in addition to one unknown cause. This evidence concerns the gene FLNA and Syndromic diarrhea.