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To study this heterogeneity, we have developed a patient stratification technique based on one of the most significant risk factors for the development of AD: genetics. We addressed this challenge by including network biology concepts, mapping genetic variants data into a brain-specific protein\u2013protein interaction (PPI) network, and obtaining individualized PPI scores that we then used as input for a clustering technique. We then phenotyped each obtained cluster regarding genetics, sociodemographics, biomarkers, fluorodeoxyglucose-positron emission tomography (FDG-PET) imaging, and neurocognitive assessments. We found three clusters defined mainly by genetic variants found in <jats:italic>MAPT<\/jats:italic>, <jats:italic>APP<\/jats:italic>, and <jats:italic>APOE<\/jats:italic>, considering known variants associated with AD and other neurodegenerative disease genetic architectures. Profiling of these clusters revealed minimal variation in AD symptoms and pathology, suggesting different biological mechanisms may activate the neurodegeneration and pathobiological patterns behind AD and result in similar clinical and pathological presentations, even a shared disease diagnosis. Lastly, our research highlighted <jats:italic>MAPT<\/jats:italic>, <jats:italic>APP<\/jats:italic>, and <jats:italic>APOE<\/jats:italic> as key genes where these genetic distinctions manifest, suggesting them as potential targets for personalized drug development strategies to address each AD subgroup individually.<\/jats:p>","DOI":"10.1038\/s41598-024-60707-1","type":"journal-article","created":{"date-parts":[[2024,5,1]],"date-time":"2024-05-01T12:52:39Z","timestamp":1714567959000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Genetic-based patient stratification in Alzheimer\u2019s disease"],"prefix":"10.1038","volume":"14","author":[{"given":"Laura","family":"Hern\u00e1ndez-Lorenzo","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fernando","family":"Garc\u00eda-Guti\u00e9rrez","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ana","family":"Solbas-Casaj\u00fas","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Silvia","family":"Corrochano","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jordi A.","family":"Mat\u00edas-Guiu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jose L.","family":"Ayala","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,4,30]]},"reference":[{"key":"60707_CR1","doi-asserted-by":"publisher","first-page":"203","DOI":"10.1097\/00002093-200210000-00001","volume":"16","author":"WW Barker","year":"2002","unstructured":"Barker, W. 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