A Genetic Variant of the Sortilin 1 Gene is Associated with Reduced Risk of Alzheimer's Disease
Artikel i vetenskaplig tidskrift, 2016

Alzheimer's disease (AD) is a neurodegenerative disorder represented by the accumulation of intracellular tau protein and extracellular deposits of amyloid-β (Aβ) in the brain. The gene sortilin 1 (SORT1) has previously been associated with cardiovascular disease in gene association studies. It has also been proposed to be involved in AD pathogenesis through facilitating Aβ clearance by binding apoE/Aβ complexes prior to cellular uptake. However, the neuropathological role of SORT1 in AD is not fully understood. To evaluate the associations between gene variants of SORT1 and risk of AD, we performed genetic analyses in a Swedish case-control cohort. Ten single nucleotide polymorphisms (SNPs), covering the whole SORT1 gene, were selected and genotyped in 620 AD patients and 1107 controls. The SNP rs17646665, located in a non-coding region of the SORT1 gene, remained significantly associated with decreased risk of AD after multiple testing (pc = 0.0061). In addition, other SNPs were found to be nominally associated with risk of AD, as well as altered cognitive function and the CSF biomarker Aβ42, but these associations did not survive correction for multiple testing. The fact that SORT1 has been strongly associated with risk of cardiovascular disease is intriguing as cardiovascular disease is also regarded as a risk factor for AD. Finally, increased knowledge about SORT1 function has a potential to increase our understanding of APOE, the strongest risk factor for AD.

Författare

Carl-Henrik Andersson

Göteborgs universitet

Oskar Hansson

Lunds universitet

Skånes universitetssjukhus (SUS)

L. Minthon

Lunds universitet

Skånes universitetssjukhus (SUS)

Niels Andreasen

Karolinska Institutet

Kaj Blennow

Göteborgs universitet

Henrik Zetterberg

Göteborgs universitet

Ingmar Skoog

Göteborgs universitet

Anders Wallin

Göteborgs universitet

Staffan Nilsson

Göteborgs universitet

Chalmers, Matematiska vetenskaper, Tillämpad matematik och statistik

Petronella Kettunen

Göteborgs universitet

Journal of Alzheimers Disease

1387-2877 (ISSN)

Vol. 53 1353-1363

Ämneskategorier

Neurovetenskaper

DOI

10.3233/JAD-160319

PubMed

27392867