The T9176G mtDNA mutation severely affects ATP production and results in Leigh syndrome.

Carrozzo, R; Tessa, A; Vázquez-Memije, M E; Piemonte, F; Patrono, C; Malandrini, A; Dionisi-Vici, C; Vilarinho, L et al. · Neurology · 2001

case_report · Level V

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Abstract

The authors identified a novel mtDNA mutation (T9176G) in the ATPase 6 gene in a family in which a 10-year-old girl had a severe neurodegenerative disorder, her elder sister had died of Leigh syndrome (LS), and a maternal uncle had a spinocerebellar disorder. Biochemical studies disclosed a reduced rate of ATP synthesis in skin fibroblast cultures from the proposita as the likely explanation of her severe illness. The findings expand the genetic variants associated with LS.

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