MAPT H2 haplotype and risk of Pick's disease in the Pick's disease International Consortium: a genetic association study
- PMID: 38631765
- PMCID: PMC11877577
- DOI: 10.1016/S1474-4422(24)00083-8
MAPT H2 haplotype and risk of Pick's disease in the Pick's disease International Consortium: a genetic association study
Abstract
Background: Pick's disease is a rare and predominantly sporadic form of frontotemporal dementia that is classified as a primary tauopathy. Pick's disease is pathologically defined by the presence in the frontal and temporal lobes of Pick bodies, composed of hyperphosphorylated, three-repeat tau protein, encoded by the MAPT gene. MAPT has two distinct haplotypes, H1 and H2; the MAPT H1 haplotype is the major genetic risk factor for four-repeat tauopathies (eg, progressive supranuclear palsy and corticobasal degeneration), and the MAPT H2 haplotype is protective for these disorders. The primary aim of this study was to evaluate the association of MAPT H2 with Pick's disease risk, age at onset, and disease duration.
Methods: In this genetic association study, we used data from the Pick's disease International Consortium, which we established to enable collection of data from individuals with pathologically confirmed Pick's disease worldwide. For this analysis, we collected brain samples from individuals with pathologically confirmed Pick's disease from 35 sites (brainbanks and hospitals) in North America, Europe, and Australia between Jan 1, 2020, and Jan 31, 2023. Neurologically healthy controls were recruited from the Mayo Clinic (FL, USA, or MN, USA between March 1, 1998, and Sept 1, 2019). For the primary analysis, individuals were directly genotyped for the MAPT H1-H2 haplotype-defining variant rs8070723. In a secondary analysis, we genotyped and constructed the six-variant-defined (rs1467967-rs242557-rs3785883-rs2471738-rs8070723-rs7521) MAPT H1 subhaplotypes. Associations of MAPT variants and MAPT haplotypes with Pick's disease risk, age at onset, and disease duration were examined using logistic and linear regression models; odds ratios (ORs) and β coefficients were estimated and correspond to each additional minor allele or each additional copy of the given haplotype.
Findings: We obtained brain samples from 338 people with pathologically confirmed Pick's disease (205 [61%] male and 133 [39%] female; 338 [100%] White) and 1312 neurologically healthy controls (611 [47%] male and 701 [53%] female; 1312 [100%] White). The MAPT H2 haplotype was associated with increased risk of Pick's disease compared with the H1 haplotype (OR 1·35 [95% CI 1·12 to 1·64], p=0·0021). MAPT H2 was not associated with age at onset (β -0·54 [95% CI -1·94 to 0·87], p=0·45) or disease duration (β 0·05 [-0·06 to 0·16], p=0·35). Although not significant after correcting for multiple testing, associations were observed at p less than 0·05: with risk of Pick's disease for the H1f subhaplotype (OR 0·11 [0·01 to 0·99], p=0·049); with age at onset for H1b (β 2·66 [0·63 to 4·70], p=0·011), H1i (β -3·66 [-6·83 to -0·48], p=0·025), and H1u (β -5·25 [-10·42 to -0·07], p=0·048); and with disease duration for H1x (β -0·57 [-1·07 to -0·07], p=0·026).
Interpretation: The Pick's disease International Consortium provides an opportunity to do large studies to enhance our understanding of the pathobiology of Pick's disease. This study shows that, in contrast to the decreased risk of four-repeat tauopathies, the MAPT H2 haplotype is associated with an increased risk of Pick's disease in people of European ancestry. This finding could inform development of isoform-related therapeutics for tauopathies.
Funding: Wellcome Trust, Rotha Abraham Trust, Brain Research UK, the Dolby Fund, Dementia Research Institute (Medical Research Council), US National Institutes of Health, and the Mayo Clinic Foundation.
Copyright © 2024 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license. Published by Elsevier Ltd.. All rights reserved.
Conflict of interest statement
Declarations of interest WJS declares funding from a Wellcome Trust Clinical PhD Fellowship (220582/Z/20/Z) and from the Rotha Abraham Trust; and has received conference travel funding from the Guarantors of Brain. NT declares funding from the 2023 Diana Jacobs Kalman-American Federation for Aging Research Scholarship for Pre-Doctoral Research on the biology of aging. KM declares funding from the Michael J Fox Foundation, Innovation and Technology Commission, Hong Kong Government, and the Chow Tai Fook Charity Foundation; affiliations with the Hong Kong University of Science and Technology and University College London; employment with the Hong Kong Center for Neurodegenerative Diseases; and support for speaker and educational activity from the National Taiwan University, Yonsei University, and the Movement Disorder Society. WWS declares funding from the National Institutes of Health (NIH), Tau Consortium, Bluefield Project to Cure Frontotemporal Dementia, and the Chan-Zuckerberg Initiative. EBL declares funding from the NIH and personal honorarium from University of Toronto, Mayo Clinic, St Louis University, Haverford, University of Oslo, NIH, and the Association of Frontotemporal Dementia. LM-P declares personal honorarium from the Galician Society of Neurology and the Spanish Society of Neurology. JBR declares funding from the NIH Research Biomedical Research Centre, the Medical Research Council, Wellcome Trust, Cambridge Centre for Parkinson-plus, PSP association, and Alzheimer's UK; and has received consulting fees from Asceneuron, Astronautx, Astex, Curasen, CumulusNeuro, Wave, Prevail, and SVHealth. TGB declares funding from the NIH, Michael J Fox Foundation, and Life Molecular Imaging; personal consulting fees from Aprinoia Therapeutics; and stock options in Vivid Genomics. S-HJW declares funding from NIH and personal honorarium from the American Society of Clinical Pathology. CG declares funding from the Swedish Frontotemporal Dementia Inititative-Schörling Foundation, EU Joint Programme-Neurodegenerative Disease Research-Prefrontals, EU Joint Programme-Neurodegenerative Disease Research-Genetic Frontotemporal Dementia Initiative-Proximity, the Alzheimer Foundation, Brain Foundation, Dementia Foundation, Region Karolinska Institutet-StratNeuro Strategiska forskningsområden, Centre for Innovative Medicine, and Karolinska Institutet-Region Stockholm Core facility; personal honoraria from Demensdagarna Örebro, Diakonia Ersta sjukhus, and Göteborgsregionen. GGK declares funding from Edmond J Safra Philanthropic Foundation, Michael J Fox Foundation, Parkinson Canada, Canada, Canada Foundation for Innovation, MSA Coalition, and the NIH; and royalties from a patent for 5G4 synuclein antibody (DE102011008153B4); and personal honoraria from the Movement Disorders Society. MN declares funding from Deutsche Forschungsgemeinschaft and Alzheimer Forschungsinitiative. HRM declares funding from the PSP Association, CBD Solutions, the Drake Foundation, the Cure Parkinson's Trust, the Michael J Fox Foundation, and Parkinson's UK; consulting fees from Roche, Amylyx, and Aprinoia; personal honoraria from Kyowa-Kirin, BMJ, and the Movement Disorders Society; travel support from the Michael J Fox Foundation; is a co-applicant on a patent application related to C9ORF72 method for diagnosing a neurodegenerative disease (PCT/GB2012/052140); and serves on the Cure PSP Association Advisory Board, the Association of British Neurologists Movement Disorders Special Interest Group, and the Association of British Neurologists Neurogenetics Advisory Group. RRa declares consulting fees from Arkuda Therapeutics and is on the advisory board for the Kissick Family Foundation. JAH declares funding from the Dolby Charities, and consulting fees from Eli Lilly and Eisai. JDR declares funding from the Bluefied project and the Alzheimer's Associaton; and consulting fees from Novartis, Wave Life Sciences, Prevail, Alector, Aviado Bio, Takeda, Arkuda Therapeutics, and Denali Therapeutics. OAR declares internal funding from the Mayo Clinic Foundation. All other authors declare no competing interests.
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Update of
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Creating the Pick's disease International Consortium: Association study of MAPT H2 haplotype with risk of Pick's disease.medRxiv [Preprint]. 2023 Apr 24:2023.04.17.23288471. doi: 10.1101/2023.04.17.23288471. medRxiv. 2023. Update in: Lancet Neurol. 2024 May;23(5):487-499. doi: 10.1016/S1474-4422(24)00083-8. PMID: 37163045 Free PMC article. Updated. Preprint.
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