Cited by 340Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Sex-Specific Association of Apolipoprotein E With Cerebrospinal Fluid Levels of Tau

Open access
Hohman, Timothy J., Dumitrescu, Logan, Barnes, Lisa L., Thambisetty, Madhav, Beecham, Gary, Kunkle, Brian, Gifford, Katherine A., Bush, William S. +19 more·2018·JAMA Neurology

Abstract

Importance: The strongest genetic risk factor for Alzheimer disease (AD), the apolipoprotein E (APOE) gene, has a stronger association among women compared with men. Yet limited work has evaluated the association between APOE alleles and markers of AD neuropathology in a sex-specific manner. Objective: To evaluate sex differences in the association between APOE and markers of AD neuropathology measured in cerebrospinal fluid (CSF) during life or in brain tissue at autopsy. Design, Setting, and Participants: This multicohort study selected data from 10 longitudinal cohort studies of normal aging and AD. Cohorts had variable recruitment criteria and follow-up intervals and included population-based and clinic-based samples. Inclusion in our analysis required APOE genotype data and either CSF data available for analysis. Analyses began on November 6, 2017, and were completed on December 20, 2017. Main Outcomes and Measures: Biomarker analyses included levels of β-amyloid 42, total tau, and phosphorylated tau measured in CSF. Autopsy analyses included Consortium to Establish a Registry for Alzheimer's Disease staging for neuritic plaques and Braak staging for neurofibrillary tangles. Results: Of the 1798 patients in the CSF biomarker cohort, 862 were women, 226 had AD, 1690 were white, and the mean (SD) age was 70 [9] years. Of the 5109 patients in the autopsy cohort, 2813 were women, 4953 were white, and the mean (SD) age was 84 (9) years. After correcting for multiple comparisons using the Bonferroni procedure, we observed a statistically significant interaction between APOE-ε4 and sex on CSF total tau (β = 0.41; 95% CI, 0.27-0.55; P < .001) and phosphorylated tau (β = 0.24; 95% CI, 0.09-0.38; P = .001), whereby APOE showed a stronger association among women compared with men. Post hoc analyses suggested this sex difference was present in amyloid-positive individuals (β = 0.41; 95% CI, 0.20-0.62; P < .001) but not among amyloid-negative individuals (β = 0.06; 95% CI, -0.18 to 0.31; P = .62). We did not observe sex differences in the association between APOE and β-amyloid 42, neuritic plaque burden, or neurofibrillary tangle burden. Conclusions and Relevance: We provide robust evidence of a stronger association between APOE-ε4 and CSF tau levels among women compared with men across multiple independent data sets. Interestingly, APOE-ε4 is not differentially associated with autopsy measures of neurofibrillary tangles. Together, the sex difference in the association between APOE and CSF measures of tau and the lack of a sex difference in the association with neurofibrillary tangles at autopsy suggest that APOE may modulate risk for neurodegeneration in a sex-specific manner, particularly in the presence of amyloidosis.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1001/jamaneurol.2018.0821

Cites

49 of 49 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • In clinically normal older adults and individuals with mild cognitive impairment, higher cerebrospinal fluid tau levels have been observed in female APOE ε4 carriers compared with male carriers.

    “In clinically normal older adults9,10 and individuals with mild cognitive impairment,11 higher cerebrospinal fluid (CSF) tau levels have been observed in female apolipoprotein E (APOE) ε4 carriers compared with male carriers.”

    From Sex Differences in the Association of Global Amyloid and Regional Tau Deposition Measured by Positron Emission Tomography in Clinically Normal Older Adults (2019) · cites this paper as [10]

    The Results (Sex × APOE Interactions) report a stronger association between APOE ε4 and CSF tau in females than in males. The Materials and Methods say an included cohort contained people with mild cognitive impairment, but the reported result is pooled rather than specific to that group. Post hoc Results also indicate that the sex difference was observed in amyloid-positive, not amyloid-negative, individuals. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • The APOE-e4 genotype may have a stronger association with Alzheimer's dementia and neurodegeneration in women than in men.

    “the APOE-e4 genotype, the best known common genetic risk factor for Alzheimer's dementia, may have a stronger association with Alzheimer's dementia 285,286 and neurodegeneration 287 in women than in men.”

    From 2023 Alzheimer's disease facts and figures (2023) · cites this paper as [287]

  • Sex differences may be more likely to appear downstream after the onset of Aβ accumulation.

    “supporting the notion that sex differences may be more likely to appear downstream after the onset of Aβ accumulation.5,10”
  • Female APOE ε4 carriers with abnormal levels of CSF Aβ also exhibit higher CSF tau than male carriers.

    “Female APOE ε4 carriers with abnormal levels of CSF Aβ also exhibit higher CSF tau than male carriers.10”
  • Few if any previous studies that investigated the association of sex with AD pathologies have examined menopausal factors.

    “Few if any of the previous studies which investigated the association of sex with AD pathologies have examined menopausal factors [25,41,43,53].”

    From Sex differences in Alzheimer’s disease and common neuropathologies of aging (2018) · cites this paper as [25]

    The Introduction describes prior research on sex differences in APOE-associated Alzheimer’s pathology, and the Discussion proposes hormonal changes around menopause as a possible mechanism. Neither passage says whether few, if any, previous studies examined menopausal factors. Searches for menopausal status and hormone measures did not establish that claim. (LLM, conf=0.72)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. [48]Farrer LA, Cupples LA, Haines JL, Effects of age, sex, and ethnicity on the association between apolipoprotein E genotype and Alzheimer disease: a meta-analysis. JAMA 1997; 278(16): 1349– 1356. 9343467

Cited by

Sorted by citations

Authors
Hohman, T. J., Dumitrescu, L., Barnes, L. L., Thambisetty, M., Beecham, G., Kunkle, B., Gifford, K. A., Bush, W. S., Chibnik, L. B., Mukherjee, S., De Jager, P. L., Kukull, W., Crane, P. K., Resnick, S. M., Keene, C. D., Montine, T. J., Schellenberg, G. D., Haines, J. L., Zetterberg, H., Blennow, K., Larson, E. B., Johnson, S. C., Albert, M., Bennett, D. A., Schneider, J. A., Jefferson, A. L., & for the Alzheimer’s Disease Genetics Consortium and the Alzheimer’s Disease Neuroimaging Initiative
Affiliations
  • Vanderbilt University Medical Center (US)
  • Rush University Medical Center (US)
  • National Institutes of Health (US)
  • University of Miami (US)
  • Case Western Reserve University (US)
  • Brigham and Women's Hospital (US)
  • University of Washington (US)
  • Center for Translational and Computational Neuroimmunology, Department of Neurology, Columbia University Medical Center, New York, New York
  • Stanford Medicine (US)
  • University of Pennsylvania (US)
  • Harvard University (US)
  • Sahlgrenska University Hospital (SE)
  • Kaiser Permanente Washington Health Research Institute (US)
  • University of Wisconsin–Madison (US)
  • Johns Hopkins University (US)
Corresponding author
Hohman, Timothy J.
Venue
JAMA Neurology
Published
2018-08-01
Volume
75
Issue
8
Pages
989
ISSN
2168-6149 (ISSN-L)
OpenAlex
W2802157723
Cited by
340
References
49
Citations by year
2026: 27 · 2025: 49 · 2024: 35 · 2023: 50 · 2022: 50 · 2021: 44 · 2020: 47 · 2019: 30 · 2018: 7
FWCI
21.94
Type
journal article
Language
en
Open access
Locations
  • JAMA Neurology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
  • U.S. Department of Defense (U01 AG006781, U01 AG024904, P50 AG005138, W81XWH, W81XWH-12-2-, W81XWH1220012, AG024904)
  • Foundation for the National Institutes of Health (P30AG010129, P30 AG010124, W81XWH-12-2-0012, U01AG024904, P50 AG005131, AG016573, AG010124, U24 AG021886, AG024904, P30 AG035982, K12 HD043483, U01 AG016976)
  • Alzheimer's Association (P30 AG013854, P30AG010124, U01 HG004610, K24-AG046373, R01 AG027161, K12-HD043483, U24 AG041689, P50 AG023501, R01 AG17917, U01 AG016976, P50 AG025688, R01‐AG034962, P30AG10161, AG010129, U01 AG032984, K01 AG049164, P30AG035982, P50 AG005681, R01 AG30146, P30 AG010161, R01 AG15819, HHSN311201600276P, U01 AG024904, R01 AG037639, P30 AG010129, U01 AG006781, U24AG021886, P50 AG008702, R01-HL111516, U01 AG46152, P30 AG010133, P50 AG005136, RF1 AG15819, W81XWH-12-2-0012, U01 HG006375, R01 NS100980, P50 AG005146, R01 AG019085, R01 AG021155, R01 AG056534)
  • Bristol-Myers Squibb (U01 AG024904, AG024904, W81XWH-12-2-0012)
  • Eli Lilly and Company (P50 AG005134, U01 AG024904, AG024904, W81XWH-12-2-0012)
  • Pfizer (AG024904, W81XWH-12-2-0012, U01 AG024904)
  • Massachusetts General Hospital (P50 AG005134)
  • Biogen (W81XWH-12-2-0012, U01 AG024904, AG024904)
  • University of Southern California (P50AG005142, R01 AG15819, W81XWH-12-2-0012, U01 AG006781, P30 AG10161, U01 AG024904)
  • Vanderbilt University (R01 AG019085)
  • University of Miami (R01 AG019085)
  • Brigham Young University
  • University of Pennsylvania (AG010124, P30 AG010124)
  • Emory University (P50AG025688, AG025688, P50 AG016573)
  • F. Hoffmann-La Roche (W81XWH-12-2-0012, AG024904, U01 AG024904)
  • Meso Scale Diagnostics (U01 AG024904, AG024904, W81XWH-12-2-0012)
  • Northwestern University (P30 AG013854)
  • Texas Tech University
  • Vanderbilt Memory and Alzheimer's Center
  • Cleveland Clinic
  • Alzheimer's Disease Neuroimaging Initiative (W81XWH-12-2–0012, U01 AG032984, U01AG024904, AG024904, W81XWH-12-2-, P30 AG010129)
  • BioClinica (U01 AG024904, W81XWH-12-2-0012, AG024904)
  • University of Washington (P50-AG005136, P50 AG005681, P50 AG033514)
  • Johns Hopkins University (P50-AG005146, AG005146, P50 AG016574)
  • University of Pittsburgh (P50 AG005133, P30 AG010133)
  • Novartis Pharmaceuticals Corporation (W81XWH-12-2-0012, U01 AG024904, AG024904)
  • Rush University (P30 AG010161, R01 AG17917, AG17917, R01 AG15819, R01AG30146, R01 AG019085, AG30146)
  • University of South Florida
  • University of North Texas
  • Northern California Institute for Research and Education (U01 AG024904, W81XWH-12-2-0012, P30 AG010129)
  • National Alzheimer's Coordinating Center (U01AG016976, P30 AG013846)
  • York University
  • Parkinson's UK (G-0907)
  • University of Toronto
  • Eisai (W81XWH-12-2-0012, U01 AG024904, AG024904)
  • Servier (AG024904, W81XWH-12-2-0012, U01 AG024904)
  • H. Lundbeck A/S (U01 AG024904, AG024904, W81XWH-12-2-0012)
  • IXICO (AG024904, W81XWH-12-2-0012, U01 AG024904)
  • National Institutes of Health (1s10od023680-01, AG028 383, 3u01ag024904-10s2, W81XWH, W81XWH-12-2-0012, UL1TR000445, HHSN311201600276P, AG016574, AG016573, AG016976, AG010124, AG023501, U01-AG024904, AG005138, AG005133, AG005131, AG008017, AG010129, AG008051, AG024904, AG005681, AG019610, RF1 AG15819, AG035982, AG10161, AG005134, AG027161, AG010161, AG013854, AG025688, AG013846, AG15819, AG037639, AG005136, AG033514, AG008702, UL1TR002243, UL1TR002369)
  • Genentech (W81XWH-12-2-0012, AG024904, U01 AG024904)
  • University of California, Los Angeles (P50 AG016570)
  • University of California, San Diego (P50-AG005131, P50 AG005133)
  • Perelman School of Medicine, University of Pennsylvania
  • Feinberg School of Medicine
  • University of Texas Health Science Center at San Antonio
  • University of California, Irvine (P50AG016573)
  • Geriatric Research Education and Clinical Center
  • Canadian Institutes of Health Research (U01 AG024904, W81XWH-12-2-0012, P50 AG016574, P30 AG010129)
  • National Institute on Aging (AG006781, U01-AG-024904, R01AG017917, AG-028383, R01AG056534, AG 016976, P30-AG 10161, AG-016570, P30AG010129, P30AG010133, R01AG019085, K25AG041906, AG-016573, K24AG046373, R01AG030146, W81XWH-12-2–0012, R01‐AG17917, AG021155, AG-010124, AG027161, P30AG028383, R01 AG15819, P30AG012300, AG-005133, AG-17917, AG008017, P50AG005133, AG 024904, U01AG006781, U01AG016976, P50AG005131, AG-013854, AG035982, P50AG005138, K23AG045966, P50AG016570, AG019610, AG010161, P30AG010124, P50AG016573, P50AG047366, AG010129, U19AG033655, R01AG037639, R01AG015819, P30AG008017, AG-033514, P30AG010161, K01AG049164, AG005131, AG019085, U01AG032984, P30AG008051, P50AG008702, P50AG033514, AG023501, P30AG035982, AG032984, AG013846, P50AG005681, P50AG005142, P30AG019610, P50AG005146, P30AG013846, P50AG005136, P50AG005134, P30AG013854, P50AG025688, RF1AG059869, AG‐037639, RF1AG015819, AG021886, AG005681, R01AG034962, R01AG021155, R01AG027161, U24AG041689, U24AG021886, P50AG023501, P50AG016574)
  • National Heart, Lung, and Blood Institute (R01HL111516)
  • National Human Genome Research Institute (U01HG004610, U01HG006375)
  • National Institute of Neurological Disorders and Stroke (R01NS100980)
  • National Institute of Biomedical Imaging and Bioengineering (W81XWH-12-2-0012, U01 AG024904, AG024904)
  • NIH Clinical Center (U01 AG024904, AG025688)
  • National Center for Advancing Translational Sciences
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (K12HD043483)
  • Johnson and Johnson Pharmaceutical Research and Development (W81XWH-12-2-0012, U01 AG024904)
  • Janssen Alzheimer Immunotherapy Research And Development (AG024904, U01 AG024904, W81XWH-12-2-0012)
  • University of Colorado School of Medicine, Anschutz Medical Campus
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
apolipoprotein E, APOE ε4, sex differences, Alzheimer's disease, cerebrospinal fluid biomarkers, total tau, phosphorylated tau, amyloid-beta 42, neurofibrillary tangles, neuritic plaques, Braak staging, Alzheimer's disease staging, neuropathology, genetic risk factors, women's health
MeSH terms
Aged, 80 and over, Alzheimer Disease, Apolipoproteins E, Female, Genotype, Humans, Male, Peptide Fragments, Phosphoproteins, Sex Factors, Cohort Studies, Amyloid beta-Peptides, Neurofibrillary Tangles, tau Proteins, Plaque, Amyloid

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review