학술논문

Novel dominant distal titinopathy phenotype associated with copy number variation
Document Type
article
Source
Annals of Clinical and Translational Neurology, Vol 8, Iss 9, Pp 1906-1912 (2021)
Subject
Neurosciences. Biological psychiatry. Neuropsychiatry
RC321-571
Neurology. Diseases of the nervous system
RC346-429
Language
English
ISSN
2328-9503
Abstract
Abstract The aim of this study was to analyze patients from two distinct families with a novel distal titinopathy phenotype associated with exactly the same CNV in the TTN gene. We used an integrated strategy combining deep phenotyping and complete molecular analyses in patients. The CNV is the most proximal out‐of‐frame TTN variant reported and leads to aberrant splicing transcripts leading to a frameshift. In this case, the dominant effect would be due to dominant‐negative and/or haploinsufficiency. Few CNV in TTN have been reported to date. Our data represent a novel phenotype–genotype association and provides hypotheses for its dominant effects.