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To validate and expand these findings, we conducted longitudinal analyses of AD and mild cognitive disorder (MCD) over a 13.7-year follow-up, along with genetic-based PWAS analyses and cross-sectional studies on hippocampal volume. Protein-protein interaction networks were constructed to explore mechanistic association.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>We identified 30 AD-associated plasma proteins by PWAS, including 17 previously reported and 13 novel candidates (including FES, LRP11, and HDGF). Longitudinal cohort studies supported the role of PILRB and FES in AD and\/or MCD. Additionally, the genetically determined higher levels of LRP11 were found to be associated with an increased hippocampal volume, including its subdivisions, along with a reduced risk of AD. In contrast, higher plasma levels of HDGF were linked to a decreased hippocampal volume, accompanied by an increased risk of AD. Protein-protein interaction analysis linked PILRA, PILRB, FES, and LRP11 to several pathological proteins associated with AD, including BIN1, ABCA7, and SORL1.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>This study identified 13 novel candidates, with potential roles in hippocampal volume and AD risk, providing insights into disease mechanisms.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/13872877251409352","type":"journal-article","created":{"date-parts":[[2025,12,29]],"date-time":"2025-12-29T17:03:38Z","timestamp":1767027818000},"page":"1733-1747","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Proteome-wide association study identifies novel Alzheimer's disease-associated proteins"],"prefix":"10.1177","volume":"109","author":[{"given":"Lingyun","family":"Sun","sequence":"first","affiliation":[{"name":"The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guikang","family":"Wei","sequence":"additional","affiliation":[{"name":"The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Feiyang","family":"Ji","sequence":"additional","affiliation":[{"name":"Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University College of Medicine, Hangzhou, China"},{"name":"Provincial Clinical Research Center for CANCER, Hangzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yihong","family":"Ding","sequence":"additional","affiliation":[{"name":"The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiayao","family":"Fan","sequence":"additional","affiliation":[{"name":"The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yue","family":"Xu","sequence":"additional","affiliation":[{"name":"The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chunfeng","family":"He","sequence":"additional","affiliation":[{"name":"The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuan","family":"Zhou","sequence":"additional","affiliation":[{"name":"The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou, China"},{"name":"Department of Biostatistics and Center for Quantitative Sciences, Vanderbilt University Medical Center, Nashville, TN, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zuyun","family":"Liu","sequence":"additional","affiliation":[{"name":"The Second Affiliated Hospital, School of Public Health, Zhejiang University School of Medicine, Hangzhou, China"},{"name":"The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zeyu","family":"Sun","sequence":"additional","affiliation":[{"name":"Jinan Microecological Biomedicine Shandong Laboratory, Jinan, P.R. 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