Mitochondrial complex III deficiency (MC3DN) is a relatively rare devastating disorder that impairs energy generation, and leads to variable symptoms such as developmental regression, seizures, kidney dysfunction and frequently death. Until now, mutations in nine genes have been known to cause CIII deficiency. CYC1, UQCRB, UQCRQ, and UQCRC2 encode components of CIII itself, whereas BCS1L, TTC19, LYRM7, UQCC2, and UQCC3 produce mitochondrial assembly factors.
Human diseases in ICD-11 classification [BR:br08403]
05 Endocrine, nutritional or metabolic diseases
Metabolic disorders
Inborn errors of metabolism
5C53 Inborn errors of energy metabolism
H02086 Mitochondrial complex III deficiency
Pathway-based classification of diseases [BR:br08402]
Cellular process
nt06535 Efferocytosis
H02086 Mitochondrial complex III deficiency
nt06529 Thermogenesis
H02086 Mitochondrial complex III deficiency
de Lonlay P, Valnot I, Barrientos A, Gorbatyuk M, Tzagoloff A, Taanman JW, Benayoun E, Chretien D, Kadhom N, Lombes A, de Baulny HO, Niaudet P, Munnich A, Rustin P, Rotig A
Title
A mutant mitochondrial respiratory chain assembly protein causes complex III deficiency in patients with tubulopathy, encephalopathy and liver failure.
Miyake N, Yano S, Sakai C, Hatakeyama H, Matsushima Y, Shiina M, Watanabe Y, Bartley J, Abdenur JE, Wang RY, Chang R, Tsurusaki Y, Doi H, Nakashima M, Saitsu H, Ogata K, Goto Y, Matsumoto N
Title
Mitochondrial complex III deficiency caused by a homozygous UQCRC2 mutation presenting with neonatal-onset recurrent metabolic decompensation.
Gaignard P, Menezes M, Schiff M, Bayot A, Rak M, Ogier de Baulny H, Su CH, Gilleron M, Lombes A, Abida H, Tzagoloff A, Riley L, Cooper ST, Mina K, Sivadorai P, Davis MR, Allcock RJ, Kresoje N, Laing NG, Thorburn DR, Slama A, Christodoulou J, Rustin P
Title
Mutations in CYC1, encoding cytochrome c1 subunit of respiratory chain complex III, cause insulin-responsive hyperglycemia.
Dallabona C, Abbink TE, Carrozzo R, Torraco A, Legati A, van Berkel CG, Niceta M, Langella T, Verrigni D, Rizza T, Diodato D, Piemonte F, Lamantea E, Fang M, Zhang J, Martinelli D, Bevivino E, Dionisi-Vici C, Vanderver A, Philip SG, Kurian MA, Verma IC, Bijarnia-Mahay S, Jacinto S, Furtado F, Accorsi P, Ardissone A, Moroni I, Ferrero I, Tartaglia M, Goffrini P, Ghezzi D, van der Knaap MS, Bertini E
Title
LYRM7 mutations cause a multifocal cavitating leukoencephalopathy with distinct MRI appearance.
Wanschers BF, Szklarczyk R, van den Brand MA, Jonckheere A, Suijskens J, Smeets R, Rodenburg RJ, Stephan K, Helland IB, Elkamil A, Rootwelt T, Ott M, van den Heuvel L, Nijtmans LG, Huynen MA
Title
A mutation in the human CBP4 ortholog UQCC3 impairs complex III assembly, activity and cytochrome b stability.
Gusic M, Schottmann G, Feichtinger RG, Du C, Scholz C, Wagner M, Mayr JA, Lee CY, Yepez VA, Lorenz N, Morales-Gonzalez S, Panneman DM, Rotig A, Rodenburg RJT, Wortmann SB, Prokisch H, Schuelke M
Title
Bi-Allelic UQCRFS1 Variants Are Associated with Mitochondrial Complex III Deficiency, Cardiomyopathy, and Alopecia Totalis.