1. UQCRC2-related mitochondrial complex III deficiency, about 7 patients.
- Author
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Bansept C, Gaignard P, Lebigot E, Eyer D, Delplancq G, Hoebeke C, Mazodier K, Ledoyen A, Rouzier C, Fragaki K, Ait-El-Mkadem Saadi S, Philippe C, Bruel AL, Faivre L, Feillet F, and Abi Warde MT
- Subjects
- Ubiquinone, Electron Transport Complex III genetics, Electron Transport Complex III deficiency, Phenotype, Humans, Mitochondrial Diseases genetics, Acidosis, Lactic genetics
- Abstract
Isolated complex III defect is a relatively rare cause of mitochondrial disorder. New genes involved were identified in the last two decades, with only a few cases described for each deficiency. UQCRC2, which encodes ubiquinol-cytochrome c reductase core protein 2, is one of the eleven structural subunits of complex III. We report seven French patients with UQCRC2 deficiency to complete the phenotype reported so far. We highlight the similarities with neoglucogenesis defect during decompensations - hypoglycaemias, liver failure and lactic acidosis - and point out the rapid improvement with glucose fluid infusion, which is a remarkable feature for a mitochondrial disorder. Finally, we discuss the relevance of coenzyme Q10 supplementation in this defect., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2019 Elsevier B.V. and Mitochondria Research Society. All rights reserved. All rights reserved.)
- Published
- 2023
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