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The First Russian Patient with Native American Myopathy.

Authors :
Murtazina A
Demina N
Chausova P
Shchagina O
Borovikov A
Dadali E
Source :
Genes [Genes (Basel)] 2022 Feb 13; Vol. 13 (2). Date of Electronic Publication: 2022 Feb 13.
Publication Year :
2022

Abstract

Congenital myopathy associated with pathogenic variants in the STAC3 gene has long been considered native American myopathy (NAM). In 2017, the first case of a non-Amerindian patient with this myopathy was described. Here, we report the first Russian patient with NAM. The patient is a 17-year-old female with compound-heterozygous single nucleotide variants in the STAC3 gene: c.862A>T, p.(Lys288Ter) and c.93del, p.(Lys32ArgfsTer78). She has a milder phenotype than the earlier described patients. To our knowledge, this is the first case of a patient who had both nonsense and frameshift variants. It is assumed that the frameshift variant with premature stop codon lead to nonsense-mediated RNA decay. However, there are two additional coding isoforms of the STAC3 gene, which are not affected by this frameshift variant. We can speculate that these isoforms may partially carry out the function, and possibly explain the milder phenotype of our patient.

Details

Language :
English
ISSN :
2073-4425
Volume :
13
Issue :
2
Database :
MEDLINE
Journal :
Genes
Publication Type :
Report
Accession number :
35205385
Full Text :
https://doi.org/10.3390/genes13020341