Any hyperinsulinemic hypoglycemia which is accompanied by cystic structures in the kidneys, and in which the cause of the disease is a variation in the PMM2 promoter. [ https://clinicalgenome.org/affiliation/40066/ http://www.ncbi.nlm.nih.gov/pubmed/28373276 http://www.ncbi.nlm.nih.gov/pubmed/36412659 ]