TEAD2 and medium chain acyl-CoA dehydrogenase deficiency: There is no urinary excretion of 3‐OH‐GA in glutaric aciduria type II (GA II), the deficiency of the electron transferring flavoprotein (ETF), which mediates the electron transport from all mitochondrial acyl‐CoA dehydrogenases (including SCAD, MCAD, and LCAD) to the respiratory chain.