Mondo Description Pyruvate dehydrogenase E2 deficiency is a very rare form of pyruvate dehydrogenase deficiency (PDHD) characterized by variable lactic acidosis and neurological dysfunction, mainly appearing during childhood.

Uniprot Description Pyruvate dehydrogenase (PDH) deficiency is a major cause of primary lactic acidosis and neurological dysfunction in infancy and early childhood. In this form of PDH deficiency episodic dystonia is the major neurological manifestation, with other more common features of pyruvate dehydrogenase deficiency, such as hypotonia and ataxia, being less prominent.