Cited by 45Dementia and Cognitive Impairment ResearchMachine Learning in HealthcareAlzheimer's disease research and treatments

Deep phenotyping of Alzheimer’s disease leveraging electronic medical records identifies sex-specific clinical associations

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Tang, Alice S., Oskotsky, Tomiko, Havaldar, Shreyas, Mantyh, William G., Bicak, Mesude, Solsberg, Caroline Warly, Woldemariam, Sarah, Zeng, Billy +6 more·2022·Nature Communications

Published version of a preprint

Abstract

Alzheimer’s Disease (AD) is a neurodegenerative disorder that is still not fully understood. Sex modifies AD vulnerability, but the reasons for this are largely unknown. We utilize two independent electronic medical record (EMR) systems across 44,288 patients to perform deep clinical phenotyping and network analysis to gain insight into clinical characteristics and sex-specific clinical associations in AD. Embeddings and network representation of patient diagnoses demonstrate greater comorbidity interactions in AD in comparison to matched controls. Enrichment analysis identifies multiple known and new diagnostic, medication, and lab result associations across the whole cohort and in a sex-stratified analysis. With this data-driven method of phenotyping, we can represent AD complexity and generate hypotheses of clinical factors that can be followed-up for further diagnostic and predictive analyses, mechanistic understanding, or drug repurposing and therapeutic approaches.

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  • The fifth real-world data study used one EHR database to identify medications enriched among AD cases and controls, with validation in an independent EHR.

    “The fifth study used one EHR database to identify medications enriched among AD cases and controls, with validation in an independent EHR (Tang et al., 2022).”
  • One study leveraged data from two large-scale independent EHR databases.

    “and one study leveraged data from two large-scale independent EHR databases (Tang et al., 2022).”
  • The AD repurposing candidates suggested and validated by the five studies using real-world data for validation included fluticasone, mometasone, dexamethasone, pioglitazone, febuxostat, atenolol, and sildenafil.

    “The AD repurposing candidates suggested and validated by the five studies using real-world data for validation included fluticasone and mometasone (inhaled corticosteroids) (Xu et al., 2021), dexamethasone (a systemic corticosteroid) (Tang et al., 2022), pioglitazone (an antidiabetic drug) (Fang et al., 2022), febuxostat (a uric acid-lowering drug used in treatment of gout) (Fang et al., 2022),”

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Authors
Tang, A. S., Oskotsky, T., Havaldar, S., Mantyh, W. G., Bicak, M., Solsberg, C. W., Woldemariam, S., Zeng, B., Hu, Z., Oskotsky, B., Dubal, D., Allen, I. E., Glicksberg, B. S., & Sirota, M.
Affiliations
  • University of California, San Francisco (US)
  • Icahn School of Medicine at Mount Sinai (US)
  • University of Minnesota (US)
Corresponding author
Tang, Alice S.
Venue
Nature Communications
Published
2022-02-03
Volume
13
Issue
1
Pages
675-675
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4210339973
Cited by
45
References
129
Citations by year
2026: 12 · 2025: 12 · 2024: 11 · 2023: 5 · 2022: 4 · 2021: 1
FWCI
5.21
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • medRxiv (acceptedVersion)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institute on Aging (RF1AG059319, AG059319, RF1AG068325, R01AG060393, R01AG057683)
  • National Institute of General Medical Sciences (T32GM007618, T32GM007175)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Physical Sciences › Computer Science › Artificial Intelligence › Machine Learning in Healthcare
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
Alzheimer's disease, sex differences, clinical phenotyping, electronic health records, comorbidity networks, sex-stratified analysis, clinical associations, drug repurposing, graph embedding
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Mental Disorders, California, Female, Humans, Male, Musculoskeletal Diseases, Nervous System Diseases, New York, Phenotype, Sex Factors, Vascular Diseases, Cohort Studies, Comorbidity, Chi-Square Distribution, Databases, Factual, Electronic Health Records

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