Novel exon 1 progranulin gene variant in Alzheimer's disease

F. Cortini, C. Fenoglio, I. Guidi, E. Venturelli, S. Pomati, A. Marcone, D. Scalabrini, C. Villa, F. Clerici, E. Dalla Valle, C. Mariani, S. Cappa, N. Bresolin, E. Scarpini, D. Galimberti

Research output: Contribution to journalArticle

Abstract

Background and purpose: Progranulin (PGRN) expression is increased in activated microglia in Alzheimer's disease (AD) brain, suggesting a potential role in this pathology. Methods: A mutation scanning of exons and flanking regions of PGRN was carried out in 120 patients with sporadic frontotemporal lobar degeneration and 145 with sporadic AD. Results: Amongst variants not yet deposited, a novel allelic variant was identified in Exon 1 (g100169G > A). It leads to an amino acidic change (p.Gly35Arg) and was observed in a patient with late onset AD. In silico analysis predicted that this mutation is possibly damaging. A second variant (g.100165C > T), resulting in a silent mutation (pAsp33Asp), was found in a patient with semantic dementia and in another with early onset AD. Both variants were absent in 226 controls. In addition, two rare non-pathogenic variants lying very close to PGRN splice-site regions (IVS2 + 7→G > A and IVS7 + 7→G > A) were observed. Transcriptional analysis in peripheral blood mononuclear cells from patients demonstrated they do not affect exon splicing. Conclusions: A novel putative PGRN mutation leading to an amino acidic substitution was identified in a patient with clinical AD.

Original languageEnglish
Pages (from-to)1111-1117
Number of pages7
JournalEuropean Journal of Neurology
Volume15
Issue number10
DOIs
Publication statusPublished - Oct 2008

Keywords

  • Allelic variant
  • Alzheimer's disease
  • Frontotemporal lobar degeneration
  • Mutation
  • Polymorphism
  • Progranulin

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

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  • Cite this

    Cortini, F., Fenoglio, C., Guidi, I., Venturelli, E., Pomati, S., Marcone, A., Scalabrini, D., Villa, C., Clerici, F., Dalla Valle, E., Mariani, C., Cappa, S., Bresolin, N., Scarpini, E., & Galimberti, D. (2008). Novel exon 1 progranulin gene variant in Alzheimer's disease. European Journal of Neurology, 15(10), 1111-1117. https://doi.org/10.1111/j.1468-1331.2008.02266.x