TREX1 p.A129fs and p.Y305C variants in a large multi-ethnic cohort of CADASIL-like unrelated patients

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Foddis M., Blumenau S., Holtgrewe M., Paquette K., Westra K., Alonso I., ...Daha Fazla

Neurobiology of Aging, cilt.123, ss.208-215, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 123
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1016/j.neurobiolaging.2022.11.013
  • Dergi Adı: Neurobiology of Aging
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Abstracts in Social Gerontology, BIOSIS, CAB Abstracts, EMBASE, MEDLINE, Psycinfo, Veterinary Science Database
  • Sayfa Sayıları: ss.208-215
  • Anahtar Kelimeler: Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL), Early-onset stroke, Exome sequencing, retinal vasculopathy with cerebral leukoencephalopathy and systemic manifestations (RVCL-S), TREX1
  • İstanbul Üniversitesi Adresli: Evet

Özet

© 2022 Elsevier Inc.Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) and retinal vasculopathy with cerebral leukodystrophy and systemic manifestations (RVCL-S) are the most common forms of rare monogenic early-onset cerebral small vessel disease and share clinical, and, to different extents, neuroradiological and neuropathological features. However, whether CADASIL and RVCL-S overlapping phenotype may be explained by shared genetic risk or causative factors such as TREX1 coding variants remains poorly understood. To investigate this intriguing hypothesis, we used exome sequencing to screen TREX1 protein-coding variability in a large multi-ethnic cohort of 180 early-onset independent familial and apparently sporadic CADASIL-like Caucasian patients from the USA, Portugal, Finland, Serbia and Turkey. We report 2 very rare and likely pathogenic TREX1 mutations: a loss of function mutation (p.Ala129fs) clustering in the catalytic domain, in an apparently sporadic 46-year-old patient from the USA and a missense mutation (p.Tyr305Cys) in the well conserved C-terminal region, in a 57-year-old patient with positive family history from Serbia. In concert with recent findings, our study expands the clinical spectrum of diseases associated with TREX1 mutations.