ABCC9 gene polymorphism is associated with hippocampal sclerosis of aging pathology

Peter T. Nelson, Steven Estus, Erin L. Abner, Ishita Parikh, Manasi Malik, Janna H. Neltner, Eseosa Ighodaro, Wang Xia Wang, Bernard R. Wilfred, Li San Wang, Walter A. Kukull, Kannabiran Nandakumar, Mark L. Farman, Wayne W. Poon, Maria M. Corrada, Claudia H. Kawas, David H. Cribbs, David A. Bennett, Julie A. Schneider, Eric B. LarsonPaul K. Crane, Otto Valladares, Frederick A. Schmitt, Richard J. Kryscio, Gregory A. Jicha, Charles D. Smith, Stephen W. Scheff, Joshua A. Sonnen, Jonathan L. Haines, Margaret A. Pericak-Vance, Richard Mayeux, Lindsay A. Farrer, Linda J. Van Eldik, Craig Horbinski, Robert C. Green, Marla Gearing, Leonard W. Poon, Patricia L. Kramer, Randall L. Woltjer, Thomas J. Montine, Amanda B. Partch, Alexander J. Rajic, Katierose Richmire, Sarah E. Monsell, Gerard D. Schellenberg, David W. Fardo

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

Hippocampal sclerosis of aging (HS-Aging) is a high-morbidity brain disease in the elderly but risk factors are largely unknown. We report the first genome-wide association study (GWAS) with HS-Aging pathology as an endophenotype. In collaboration with the Alzheimer's Disease Genetics Consortium, data were analyzed from large autopsy cohorts: (#1) National Alzheimer's Coordinating Center (NACC); (#2) Rush University Religious Orders Study and Memory and Aging Project; (#3) Group Health Research Institute Adult Changes in Thought study; (#4) University of California at Irvine 90+ Study; and (#5) University of Kentucky Alzheimer's Disease Center. Altogether, 363 HS-Aging cases and 2,303 controls, all pathologically confirmed, provided statistical power to test for risk alleles with large effect size. A two-tier study design included GWAS from cohorts #1-3 (Stage I) to identify promising SNP candidates, followed by focused evaluation of particular SNPs in cohorts #4-5 (Stage II). Polymorphism in the ATP-binding cassette, sub-family C member 9 (ABCC9) gene, also known as sulfonylurea receptor 2, was associated with HS-Aging pathology. In the meta-analyzed Stage I GWAS, ABCC9 polymorphisms yielded the lowest p values, and factoring in the Stage II results, the meta-analyzed risk SNP (rs704178:G) attained genome-wide statistical significance (p = 1.4 × 10-9), with odds ratio (OR) of 2.13 (recessive mode of inheritance). For SNPs previously linked to hippocampal sclerosis, meta-analyses of Stage I results show OR = 1.16 for rs5848 (GRN) and OR = 1.22 rs1990622 (TMEM106B), with the risk alleles as previously described. Sulfonylureas, a widely prescribed drug class used to treat diabetes, also modify human ABCC9 protein function. A subsample of patients from the NACC database (n = 624) were identified who were older than age 85 at death with known drug history. Controlling for important confounders such as diabetes itself, exposure to a sulfonylurea drug was associated with risk for HS-Aging pathology (p = 0.03). Thus, we describe a novel and targetable dementia risk factor.

Original languageEnglish
Pages (from-to)825-843
Number of pages19
JournalActa Neuropathologica
Volume127
Issue number6
DOIs
StatePublished - Jun 2014

Bibliographical note

Funding Information:
Acknowledgments We are deeply grateful to all of the study participants and all the clinical workers, who make this research possible. We thank Ms. Sonya Anderson and Ms. ela Patel for technical support. Thanks also to Drs. Julia Kofler and M. Ilyas Kamboh for collaborative assistance in this project. 1D3 antibody was a generous gift from Dr. Manuela Neumann. Funding included National Institutes of Health (NIH) grants for ADgC (U01 Ag032984), NACC (U01 Ag016976), the National Cell repository for AD (NCrAD; U24 Ag21886), K25 Ag043546, Ul1Tr000117, and the UK-ADC P30 Ag028383 from the National Institute on Aging (NIA). ACT enrollment and clinical data are from NIA U01 Ag 06781 (e lar-son, PI). genetic data for ACT are from Human genome research Institute U01 Hg006375 (e larson, PI). rush religious Order Study and Memory and Aging Project (D Bennett PI) is supported by NIH grants P30Ag10161, r01Ag15819, r01Ag17917, r01Ag42210, and the Translational genomics research Institute. University of California Irvine work was supported by NIH grants for the UCI ADC (P50Ag16573) and 90+ Study (r01Ag21055; C Kawas, PI). For additional acknowledgment and funding support, please see Supplemental material.

Funding

Acknowledgments We are deeply grateful to all of the study participants and all the clinical workers, who make this research possible. We thank Ms. Sonya Anderson and Ms. ela Patel for technical support. Thanks also to Drs. Julia Kofler and M. Ilyas Kamboh for collaborative assistance in this project. 1D3 antibody was a generous gift from Dr. Manuela Neumann. Funding included National Institutes of Health (NIH) grants for ADgC (U01 Ag032984), NACC (U01 Ag016976), the National Cell repository for AD (NCrAD; U24 Ag21886), K25 Ag043546, Ul1Tr000117, and the UK-ADC P30 Ag028383 from the National Institute on Aging (NIA). ACT enrollment and clinical data are from NIA U01 Ag 06781 (e lar-son, PI). genetic data for ACT are from Human genome research Institute U01 Hg006375 (e larson, PI). rush religious Order Study and Memory and Aging Project (D Bennett PI) is supported by NIH grants P30Ag10161, r01Ag15819, r01Ag17917, r01Ag42210, and the Translational genomics research Institute. University of California Irvine work was supported by NIH grants for the UCI ADC (P50Ag16573) and 90+ Study (r01Ag21055; C Kawas, PI). For additional acknowledgment and funding support, please see Supplemental material.

FundersFunder number
NCRADK25 Ag043546, U24 Ag21886, Ul1Tr000117
National Cell repository
Translational Genomics Research Institute
UCI ADCP50Ag16573
UK-ADCP30 Ag028383
National Institutes of Health (NIH)U01 Ag032984
National Institutes of Health (NIH)
National Institute on AgingR01AG041797, P30AG028383, P30Ag10161
National Institute on Aging
National Association for Colitis and Crohn's DiseaseU01 Ag016976
National Association for Colitis and Crohn's Disease

    Keywords

    • ADGC
    • CTAGE5
    • KATP
    • Neuropathology
    • Oldest old
    • Potassium channel

    ASJC Scopus subject areas

    • Pathology and Forensic Medicine
    • Clinical Neurology
    • Cellular and Molecular Neuroscience

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