Combined Oxidative Phosphorylation Deficiency 40, also known as coxpd40, is related to hypoparathyroidism-deafness-renal disease syndrome. An important gene associated with Combined Oxidative Phosphorylation Deficiency 40 is QRSL1 (Glutaminyl-TRNA Amidotransferase Subunit QRSL1). Affiliated tissues include brain and globus pallidus, and related phenotypes are hearing impairment and anemia