期刊
JOURNAL OF HUMAN GENETICS
卷 64, 期 12, 页码 1237-1242出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s10038-019-0678-1
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资金
- Department of Health Research, Ministry of Health and Family Welfare, Government of India [V.25011/379/2015-GIA/HR]
VAC14-related disorders include two distinct phenotypes, striatonigral degeneration [MIM# 617054] and Yunis-Varon syndrome. Striatonigral degeneration is a recently described childhood onset dystonia caused by pathogenic variants in VAC14. It is characterized by a period of apparent normalcy followed by abrupt onset neuroregression, dystonia, involuntary movements and degenerative brain lesions involving caudate nucleus, putamen and substantia nigra. Yunis-Varon syndrome is a well described severe condition characterised by skeletal findings and dysmorphism along with neuronal degeneration. Pathogenic variants in FIG4 have been previously reported to cause Yunis-Varon syndrome. Recently, loss of function variants in VAC14 were also reported in an individual affected with Yunis-Varon syndrome. Total seven individuals from four families are reported to have VAC14-related disorders till date. Here, we report another individual with clinical and radiological features suggestive of striatonigral degeneration with homozygous missense variant in VAC14. The patient fibroblasts showed extensive vacuolization, characteristic of VAC14-related disorders. We also review the phenotype and genotype associated with these disorders.
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