Novel biallelic variants in NRROS associated with a lethal microgliopathy, brain calcifications, and neurodegeneration.
Novel biallelic variants in NRROS associated with a lethal microgliopathy, brain calcifications, and neurodegeneration.
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DOI:
10.1007/s10048-022-00683-8
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发表时间:
2022-04
期刊:
影响因子:
2.2
通讯作者:
中科院分区:
文献类型:
--
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Negative regulator of reactive oxygen species (NRROS) is a leucine-rich repeat protein expressed by microglia and perivascular macrophages. To date, 9 individuals have been reported with biallelic NRROS variants. Here, we report one individual with a severe neurodegenerative phenotype in which exome sequencing identified 2 novel variants in NRROS, a missense variant (c.185T>C, p.Leu62Pro) and a premature stop codon (c.310C>T, p.Gln104Ter). Pathological examination revealed both extensive grey and white matter involvement, dystrophic calcifications and infiltration of foamy macrophages. This is the first reported case of NRROS variants with an ultrastructure mitochondrial abnormality noted on electron microscopy analysis of post-mortem tissue.
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