TARS2 c.470 C > G is a chinese-specific founder mutation in three unrelated families with mitochondrial encephalomyopathy.

Autor: Zhang S; Department of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530003, P.R. China., Qin H; Department of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530003, P.R. China., Wang Q; Department of Medical Genetics, Dongguan Maternal and Child Health Care Hospital, Dongguan, 523120, China., Wang Y; Department of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530003, P.R. China., Liu Y; Shenzhen Luohu People's Hospital, the Third Affiliated Hospital of Shenzhen University, Shenzhen, 518000, P.R. China., Yang Q; Department of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530003, P.R. China., Luo J; Department of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530003, P.R. China., Qin Z; Department of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530003, P.R. China., Ji X; Department of Medical Laboratory, Shenzhen Luohu People's Hospital, the Third Affiliated Hospital of Shenzhen University, Shenzhen, 518000, P.R. China., Kan L; Department of Medical Laboratory, Shenzhen Luohu People's Hospital, the Third Affiliated Hospital of Shenzhen University, Shenzhen, 518000, P.R. China., Geng G; Department of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530003, P.R. China., Huang J; Department of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530003, P.R. China., Wei S; Department of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530003, P.R. China., Chen Q; Department of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530003, P.R. China., Shen Y; Department of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530003, P.R. China.; Division of Genetics and Genomics, Boston Children's Hospital, Harvard Medical School, 02115, Boston, MA, USA., Yuan H; Department of Medical Genetics, Dongguan Maternal and Child Health Care Hospital, Dongguan, 523120, China. haimingyuan@sina.cn., Lai B; Shenzhen Luohu People's Hospital, the Third Affiliated Hospital of Shenzhen University, Shenzhen, 518000, P.R. China. angell_hood95@sina.com.
Jazyk: angličtina
Zdroj: Orphanet journal of rare diseases [Orphanet J Rare Dis] 2024 Oct 11; Vol. 19 (1), pp. 376. Date of Electronic Publication: 2024 Oct 11.
DOI: 10.1186/s13023-024-03365-w
Abstrakt: Biallelic pathogenic variants in TARS2 lead to combined oxidative phosphorylation deficiency, subtype 21 (COXPD21, MIM #615918), which is a rare mitochondrial encephalomyopathy (ME) characterized by early-onset severe axial hypotonia, limb hypertonia, psychomotor developmental delay, epilepsy and brain anomalies. To date, approximately 28 individuals with COXPD21 and 28 TARS2 variants have been identified. In this study, we reported additional four individuals from three unrelated Chinese families with mitochondrial encephalomyopathy caused by pathogenic variants in TARS2, and described the novel clinical phenotypes and genotypic information. In addition to two novel variants (c.512G > A, p.Arg171Lys; c.988dup, p.Arg330Lysfs*4), one previously reported variant (c.470 C > G, p.Thr157Arg) recurred in six Chinese individuals with COXPD21 but was not present in populations of other races. Our findings expanded the mutation spectrum of TARS2 and confirmed that c.470 C > G is a Chinese-specific founder mutation. The novel phenotypes, including reduced fetal movement, eye anomalies and sleep irregularities, observed in our patients enriched the clinical characteristics of COXPD21.
(© 2024. The Author(s).)
Databáze: MEDLINE
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