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. 2025 May;40(5):950-961.
doi: 10.1002/mds.30150. Epub 2025 Mar 8.

Copy Number Variation and Haplotype Analysis of 17q21.31 Reveals Increased Risk Associated with Progressive Supranuclear Palsy and Gene Expression Changes in Neuronal Cells

Hui Wang  1   2 Timothy S Chang  3 Beth A Dombroski  1   2 Po-Liang Cheng  1   2 Ya-Qin Si  4 Albert Tucci  4 Vishakha Patil  3 Leopoldo Valiente-Banuet  3 Chong Li  5 Kurt Farrell  6 Catriona Mclean  7 Laura Molina-Porcel  8   9 Alex Rajput  10 Peter Paul De Deyn  11   12 Nathalie Le Bastard  13 Marla Gearing  14 Laura Donker Kaat  15 John C Van Swieten  15 Elise Dopper  15 Bernardino F Ghetti  16 Kathy L Newell  16 Claire Troakes  17 Justo G de Yébenes  18 Alberto Rábano-Gutierrez  19 Tina Meller  20 Wolfgang H Oertel  20 Gesine Respondek  21 Maria Stamelou  22   23 Thomas Arzberger  24   25 Sigrun Roeber  25 Ulrich Müller  26 Franziska Hopfner  27 Pau Pastor  28   29 Alexis Brice  30 Alexandra Durr  30 Isabelle Le Ber  30 Thomas G Beach  31 Geidy E Serrano  31 Lili-Naz Hazrati  32 Irene Litvan  33 Rosa Rademakers  34   35 Owen A Ross  35 Douglas Galasko  33 Adam L Boxer  36 Bruce L Miller  36 Willian W Seeley  36 Vivianna M Van Deerlin  1 Edward B Lee  1   37 Charles L White 3rd  38 Huw R Morris  39 Rohan de Silva  40 John F Crary  6 Alison M Goate  41 Jeffrey S Friedman  42 Yaroslau Compta  43   44 Yuk Yee Leung  1   2 Giovanni Coppola  3   45 Adam C Naj  1   2   46 Li-San Wang  1   2 PSP Genetics Study GroupClifton Dalgard  47 Dennis W Dickson  35 Günter U Höglinger  21   27   48 Jung-Ying Tzeng  4   49 Daniel H Geschwind  3   50   51 Gerard D Schellenberg  1   2 Wan-Ping Lee  1   2
Collaborators, Affiliations

Copy Number Variation and Haplotype Analysis of 17q21.31 Reveals Increased Risk Associated with Progressive Supranuclear Palsy and Gene Expression Changes in Neuronal Cells

Hui Wang et al. Mov Disord. 2025 May.

Abstract

Background: The 17q21.31 region with various structural forms characterized by the H1/H2 haplotypes and three large copy number variations (CNVs) represents the strongest risk locus in progressive supranuclear palsy (PSP).

Objective: To investigate the association between CNVs and structural forms on 17q.21.31 with the risk of PSP.

Methods: Utilizing whole genome sequencing data from 1684 PSP cases and 2392 controls, the three large CNVs (α, β, and γ) and structural forms within 17q21.31 were identified and analyzed for their association with PSP.

Results: We found that the copy number of γ was associated with increased PSP risk (odds ratio [OR] = 1.10, P = 0.0018). From H1β1γ1 (OR = 1.21) and H1β2γ1 (OR = 1.24) to H1β1γ4 (OR = 1.57), structural forms of H1 with additional copies of γ displayed a higher risk for PSP. The frequency of the risk sub-haplotype H1c rises from 1% in individuals with two γ copies to 88% in those with eight copies. Additionally, γ duplication up-regulates expression of ARL17B, LRRC37A/LRRC37A2, and NSFP1, while down-regulating KANSL1. Single-nucleus RNA-seq of the dorsolateral prefrontal cortex analysis reveals γ duplication primarily up-regulates LRRC37A/LRRC37A2 in neuronal cells.

Conclusions: The copy number of γ is associated with the risk of PSP after adjusting for H1/H2, indicating that the complex structure at 17q21.31 is an important consideration when evaluating the genetic risk of PSP. © 2025 The Author(s). Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.

Keywords: 17q21.31; H1 and H2 haplotypes; copy number variations; progressive supranuclear palsy; single‐cell gene expression.

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Figures

FIG. 1
FIG. 1
The association between the copy number of γ and MAPT sub‐haplotypes. The number of haplotypes (2 × the number of individuals) are showed on each bar. The percentage of H1c is showed in brackets. The MAPT sub‐haplotypes on H1 that were associated with the risk of progressive supranuclear palsy or have an allele frequency >0.05 were color coded. All the other MAPT sub‐haplotypes were included in the ‘Other’ category. The color information: H1c (#45526C), H1b (#2B8CBE), H1d (#4EB3D3), H1e (#5AB4AC), H1g (#C7EAE5), H1h (#DFC27D), H1o (#8C510A), and Other (#D6DCE5). [Color figure can be viewed at wileyonlinelibrary.com]
FIG. 2
FIG. 2
The association between the copy number of γ and gene expression. (A) Schematic plot of gene locations at 17q.21.31. (B) Gene expression values for three genes on the γ duplication. Total RNA was isolated from the cerebellum of 191 samples. (C) Gene expression values for three genes on the γ duplication. Total RNA was isolated from the temporal cortex of 189 samples. (D–E) LRRC37A/LRRC37A2 pseudobulk expression for different cell types in dorsolateral prefrontal cortex stratified by the number of γ duplication. Pseudobulk counts were log‐normalized using AggregateExpression function from Seurat. CPM, counts per million. [Color figure can be viewed at wileyonlinelibrary.com]

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