D-2-Hydroxyglutaric Aciduria 2, also known as d2hga2, is related to l-2-hydroxyglutaric aciduria and combined d-2- and l-2-hydroxyglutaric aciduria. An important gene associated with D-2-Hydroxyglutaric Aciduria 2 is IDH2 (Isocitrate Dehydrogenase (NADP(+)) 2), and among its related pathways/superpathways are Metabolism and Respiratory electron transport, ATP synthesis by chemiosmotic coupling, and heat production by uncoupling proteins.. Affiliated tissues include brain and myeloid, and related phenotypes are d-2-hydroxyglutaric aciduria and d-2-hydroxyglutaric acidemia