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Association of genetic scores related to insulin resistance with neurological outcomes in ancestrally diverse cohorts from the Trans-Omics for Precision Medicine (TOPMed) program

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Research output: Contribution to journalArticlepeer-review

Abstract

To better characterize the potential biological mechanisms underlying insulin resistance (IR) and dementia, we derive cross-population and population specific polygenic scores [PSs] for fasting insulin and IR-related partitioned PSs [pPSs]. We conduct a cross-sectional study of the associations of these genetic scores with neurological outcomes in >17k participants (36% men, mean age 55 yrs) from the Trans-Omics for Precision Medicine (TOPMed) program (50% Non-Hispanic White, 23% Black/African American, 21% Hispanic/Latino American, and 4% Asian American). We report significant negative associations (P < 0.002) of the cross-population (P = 1.3 × 10-5) and European (PEA = 3.0 × 10-8) fasting insulin PSs with total cranial volume, and of a metabolic syndrome European PS with general cognitive function (BEA = -0.13, PEA = 0.0002) and lateral ventricular volume (BEA = 0.09, PEA = 0.002). We identify suggestive negative associations (P < 0.007) of metabolic syndrome and obesity pPSs with general cognitive function, and of lipodystrophy pPSs with total cranial volume. A higher genetic predisposition to IR is associated with lower brain size, and a genetic predisposition to specific IR-related type 2 diabetes subtypes, such as metabolic syndrome and mechanisms of IR mediated through obesity and lipodystrophy, is potentially involved in cognitive decline.

Original languageEnglish
Article number1352
JournalCommunications Biology
Volume8
Issue number1
DOIs
StatePublished - Dec 2025

Bibliographical note

Publisher Copyright:
© The Author(s) 2025.

Funding

We gratefully acknowledge the studies and participants who provided biological samples and data for TOPMed. We acknowledge the TOPMed Program. The TOPMed Banner is provided as a Supplementary file (Supplementary Data 3). We acknowledge the TOPMed Diabetes and the TOPMed Neurocognitive working groups. A list of members with their affiliations for each working group is provided as a Supplementary file (Supplementary Data 4). We acknowledge the Type 2 Diabetes Global Genetics Initiative (T2DGGI) consortium. Membership of the T2DGGI consortium with affiliations is available at: https://www.diagram-consortium.org/T2DGGI.html [diagram-consortium.org] and provided in the Supplement. We acknowledge the Meta-Analyses of Glucose and Insulin-related traits Consortium (MAGIC). More information about the Consortium can be found at: https://magicinvestigators.org/index.html. A list of authors with their affiliations who contributed to the MAGIC FI meta-analysis is provided in the Supplement. Molecular data for the Trans-Omics in Precision Medicine (TOPMed) program was supported by the National Heart, Lung, and Blood Institute (NHLBI). Study-specific omics support information is provided in the Supplement. Core support, including centralized genomic read mapping and genotype calling, along with variant quality metrics and filtering, was provided by the TOPMed Informatics Research Center (3R01HL-117626-02S1; contract HHSN268201800002I). Core support, including phenotype harmonization, data management, sample-identity QC, and general program coordination, was provided by the TOPMed Data Coordinating Center (R01HL-120393; U01HL-120393; contract HHSN268201800001I). This work is funded through NIA R00 AG066849 (PI C.S.). J.C.F. is funded through NHLBI K24 HL157960. X.J. is funded through KL2TR002646, R21 AG075791. Y.Z. is funded through NHLBI R01HL151855 (PI J.B.M.). M.S.U. is funded through a Doris Duke Foundation grant 2022063. M.F. is funded through U01 AG058589. K.A. Gonzalez is funded through an NSF GRFP fellowship (2021-2024). A.B. is funded through R01 AG054076. C.S.D. is funded through R01 AG054076, P30 AG072972. C.L.S. is funded through R01 AG059727, R01 AG082360, U01 NS125513, P30 AG066546. S.S. is funded through R01 HL105756, R01 AG033193, P30 AG066546, RF1 AG059421, R01 AG054076, R01 AG049607. We gratefully acknowledge the studies and participants who provided biological samples and data for TOPMed. We acknowledge the TOPMed Program. The TOPMed Banner is provided as a Supplementary file (Supplementary Data ) . We acknowledge the TOPMed Diabetes and the TOPMed Neurocognitive working groups. A list of members with their affiliations for each working group is provided as a Supplementary file (Supplementary Data ). We acknowledge the Type 2 Diabetes Global Genetics Initiative (T2DGGI) consortium. Membership of the T2DGGI consortium with affiliations is available at: https://www.diagram-consortium.org/T2DGGI.html [diagram-consortium.org] and provided in the Supplement. We acknowledge the Meta-Analyses of Glucose and Insulin-related traits Consortium (MAGIC). More information about the Consortium can be found at: https://magicinvestigators.org/index.html . A list of authors with their affiliations who contributed to the MAGIC FI meta-analysis is provided in the Supplement. Molecular data for the Trans-Omics in Precision Medicine (TOPMed) program was supported by the National Heart, Lung, and Blood Institute (NHLBI). Study-specific omics support information is provided in the Supplement. Core support, including centralized genomic read mapping and genotype calling, along with variant quality metrics and filtering, was provided by the TOPMed Informatics Research Center (3R01HL-117626-02S1; contract HHSN268201800002I). Core support, including phenotype harmonization, data management, sample-identity QC, and general program coordination, was provided by the TOPMed Data Coordinating Center (R01HL-120393; U01HL-120393; contract HHSN268201800001I). This work is funded through NIA R00 AG066849 (PI C.S.). J.C.F. is funded through NHLBI K24 HL157960. X.J. is funded through KL2TR002646, R21 AG075791. Y.Z. is funded through NHLBI R01HL151855 (PI J.B.M.). M.S.U. is funded through a Doris Duke Foundation grant 2022063. M.F. is funded through U01 AG058589. K.A. Gonzalez is funded through an NSF GRFP fellowship (2021-2024). A.B. is funded through R01 AG054076. C.S.D. is funded through R01 AG054076, P30 AG072972. C.L.S. is funded through R01 AG059727, R01 AG082360, U01 NS125513, P30 AG066546. S.S. is funded through R01 HL105756, R01 AG033193, P30 AG066546, RF1 AG059421, R01 AG054076, R01 AG049607.

FundersFunder number
T2DGGI
National Heart, Lung, and Blood Institute (NHLBI)
TOPMed Informatics Research CenterU01HL-120393, HHSN268201800001I, HHSN268201800002I, R01HL-120393, 3R01HL-117626-02S1
National Science Foundation Arctic Social Science ProgramR01 AG049607, R01 AG059727, U01 NS125513, R01 AG054076, R01 AG033193, P30 AG072972, R01 AG082360, P30 AG066546, RF1 AG059421, 2021-2024, R01 HL105756
Doris Duke Charitable Foundation2022063, U01 AG058589
U.S. Department of Health & Human Services | NIH | National Institute on Aging (U.S. National Institute on Aging)KL2TR002646, K24 HL157960, R21 AG075791, R00 AG066849, R01HL151855

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 3 - Good Health and Well-being
      SDG 3 Good Health and Well-being

    ASJC Scopus subject areas

    • Medicine (miscellaneous)
    • General Biochemistry, Genetics and Molecular Biology
    • General Agricultural and Biological Sciences

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