Based on new data patients with heterozygous and compound heterozygous genotypes can have symptom presentation as well. GSID involves deficiency in the enzyme sucrase-isomaltase, which breaks the bond between the glucose and fructose molecules.
Based on updated data, patients with certain genotypes can show symptomatology. GSID involves a deficiency in sucrase-isomaltase, which splits the bond between glucose and fructose.