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@ARTICLE{LeGrand:270140,
author = {Le Grand, Quentin and Tsuchida, Ami and Koch, Alexandra and
Imtiaz, Mohammed Aslam and Aziz, N Ahmad and Vigneron,
Chloé and Zago, Laure and Lathrop, Mark and Dubrac,
Alexandre and Couffinhal, Thierry and Crivello, Fabrice and
Matthews, Paul M and Mishra, Aniket and Breteler, Monique M
B and Tzourio, Christophe and Debette, Stéphanie},
title = {{D}iffusion imaging genomics provides novel insight into
early mechanisms of cerebral small vessel disease.},
journal = {Molecular psychiatry},
volume = {29},
number = {11},
issn = {1359-4184},
address = {London},
publisher = {Macmillan},
reportid = {DZNE-2024-00740},
pages = {3567 - 3579},
year = {2024},
abstract = {Cerebral small vessel disease (cSVD) is a leading cause of
stroke and dementia. Genetic risk loci for white matter
hyperintensities (WMH), the most common MRI-marker of cSVD
in older age, were recently shown to be significantly
associated with white matter (WM) microstructure on
diffusion tensor imaging (signal-based) in young adults. To
provide new insights into these early changes in WM
microstructure and their relation with cSVD, we sought to
explore the genetic underpinnings of cutting-edge
tissue-based diffusion imaging markers across the adult
lifespan. We conducted a genome-wide association study of
neurite orientation dispersion and density imaging (NODDI)
markers in young adults (i-Share study: N = 1 758,
(mean[range]) 22.1[18-35] years), with follow-up in young
middle-aged (Rhineland Study: N = 714, 35.2[30-40] years)
and late middle-aged to older individuals (UK Biobank: N =
33 224, 64.3[45-82] years). We identified 21 loci associated
with NODDI markers across brain regions in young adults. The
most robust association, replicated in both follow-up
cohorts, was with Neurite Density Index (NDI) at chr5q14.3,
a known WMH locus in VCAN. Two additional loci were
replicated in UK Biobank, at chr17q21.2 with NDI, and
chr19q13.12 with Orientation Dispersion Index (ODI).
Transcriptome-wide association studies showed associations
of STAT3 expression in arterial and adipose tissue
(chr17q21.2) with NDI, and of several genes at chr19q13.12
with ODI. Genetic susceptibility to larger WMH volume, but
not to vascular risk factors, was significantly associated
with decreased NDI in young adults, especially in regions
known to harbor WMH in older age. Individually, seven of 25
known WMH risk loci were associated with NDI in young
adults. In conclusion, we identified multiple novel genetic
risk loci associated with NODDI markers, particularly NDI,
in early adulthood. These point to possible early-life
mechanisms underlying cSVD and to processes involving
remyelination, neurodevelopment and neurodegeneration, with
a potential for novel approaches to prevention.},
keywords = {Humans / Cerebral Small Vessel Diseases: genetics /
Genome-Wide Association Study: methods / Female / Male /
Adult / Middle Aged / Aged / Diffusion Tensor Imaging:
methods / White Matter: diagnostic imaging / White Matter:
metabolism / Brain: metabolism / Young Adult / Aged, 80 and
over / Genomics: methods / Adolescent / Diffusion Magnetic
Resonance Imaging: methods / Polymorphism, Single
Nucleotide: genetics / Neurites: metabolism},
cin = {AG Breteler / AG Aziz},
ddc = {610},
cid = {I:(DE-2719)1012001 / I:(DE-2719)5000071},
pnm = {354 - Disease Prevention and Healthy Aging (POF4-354)},
pid = {G:(DE-HGF)POF4-354},
experiment = {EXP:(DE-2719)Rhineland Study-20190321},
typ = {PUB:(DE-HGF)16},
pmc = {pmc:PMC11541005},
pubmed = {pmid:38811690},
doi = {10.1038/s41380-024-02604-7},
url = {https://pub.dzne.de/record/270140},
}