Finally, a larger metanalysis of 30 pediatric studies examining 34,753 disaccharide assays found the proportion of lactase deficiency to be 39.2%, maltase deficiency 12.6%, sucrase deficiency 9.0%, and palatinase (isomaltase) deficiency 9.1% [22]. The gene discussed is LCT; the disease is hyperinsulinemic hypoglycemia, familial, 4.