{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"institution":[{"name":"medRxiv"}],"indexed":{"date-parts":[[2026,1,31]],"date-time":"2026-01-31T22:28:00Z","timestamp":1769898480313,"version":"3.49.0"},"posted":{"date-parts":[[2026,1,28]]},"group-title":"Neurology","reference-count":52,"publisher":"openRxiv","license":[{"start":{"date-parts":[[2026,1,28]],"date-time":"2026-01-28T00:00:00Z","timestamp":1769558400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.medrxiv.org\/about\/FAQ#license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"accepted":{"date-parts":[[2026,1,28]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                <jats:sec>\n                  <jats:title>Background<\/jats:title>\n                  <jats:p>Subjective cognitive decline (SCD) is common in older adults and may precede mild cognitive impairment (MCI). Whether longitudinal changes in self- or study partner (SP)-reported SCD improve early identification of individuals at risk for clinical progression, particularly along the Alzheimer\u2019s disease (AD) biological continuum, remains unclear.<\/jats:p>\n                <\/jats:sec>\n                <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>We pooled data from two longitudinal observational cohorts (DELCODE and ADNI). Cognitively unimpaired (CU) participants were recruited through public advertisement or memory clinics and included if baseline amyloid status, \u22652 SCD assessments, and clinical follow-up were available. SCD was assessed using the Everyday Cognition questionnaire (self- and SP-report). Linear mixed-effects models examined longitudinal associations between SCD trajectories, baseline AD biomarkers, and progression to incident MCI. Multivariable Cox proportional hazards models tested whether one-year changes in SCD predicted subsequent progression.<\/jats:p>\n                <\/jats:sec>\n                <jats:sec>\n                  <jats:title>Findings<\/jats:title>\n                  <jats:p>Among 770 participants (median age 69\u00b79years [IQR 66\u00b70\u201374\u00b76]; 52\u00b76% women; median follow-up 5\u00b70years [4\u00b70-7\u00b70]), amyloid-positive individuals and those who progressed to MCI showed steeper longitudinal increases in both SCD reports. In amyloid-positive participants, only increases in SP-reported SCD differentiated progressors from non-progressors. One-year increases in SP-reported SCD predicted a higher risk of subsequent MCI compared with unchanged scores (hazard ratio 3\u00b724 [95%CI 1\u00b773-6\u00b707]), with effects confined to amyloid-positive participants.<\/jats:p>\n                <\/jats:sec>\n                <jats:sec>\n                  <jats:title>Interpretation<\/jats:title>\n                  <jats:p>Longitudinal increases in SP-reported cognitive difficulties, particularly over short intervals, are associated with near-term progression to MCI in amyloid-positive CU older adults. SP-based longitudinal monitoring may represent a low-burden approach to support earlier clinical surveillance in aging populations.<\/jats:p>\n                <\/jats:sec>\n                <jats:sec>\n                  <jats:title>Funding<\/jats:title>\n                  <jats:p>German Center for Neurodegenerative Diseases, US National Institutes of Health.<\/jats:p>\n                <\/jats:sec>","DOI":"10.64898\/2026.01.27.26344715","type":"posted-content","created":{"date-parts":[[2026,1,29]],"date-time":"2026-01-29T00:00:20Z","timestamp":1769644820000},"source":"Crossref","is-referenced-by-count":0,"title":["Subjective cognition trajectories, Alzheimer biomarkers, and incident mild cognitive impairment"],"prefix":"10.64898","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3744-1155","authenticated-orcid":false,"given":"Elizabeth","family":"Kuhn","sequence":"first","affiliation":[{"name":"German Center for Neurodegenerative Diseases (DZNE) Bonn, Venusberg-Campus 1\/99, 53127, Bonn, Germany"},{"name":"Department of Cognitive Disorders and Old Age Psychiatry, University Hospital Bonn, Venusberg-Campus 1, 53127, Bonn, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-3309-6856","authenticated-orcid":false,"given":"Luca","family":"Kleinedam","sequence":"additional","affiliation":[{"name":"German Center for Neurodegenerative Diseases (DZNE) Bonn, Venusberg-Campus 1\/99, 53127, Bonn, Germany"},{"name":"Department of Cognitive Disorders and Old Age Psychiatry, University Hospital Bonn, Venusberg-Campus 1, 53127, Bonn, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-3812-023X","authenticated-orcid":false,"given":"Melina","family":"Stark","sequence":"additional","affiliation":[{"name":"German Center for Neurodegenerative Diseases (DZNE) Bonn, Venusberg-Campus 1\/99, 53127, Bonn, Germany"},{"name":"Department of Cognitive Disorders and Old Age Psychiatry, University Hospital Bonn, Venusberg-Campus 1, 53127, Bonn, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0568-2998","authenticated-orcid":false,"given":"Oliver","family":"Peters","sequence":"additional","affiliation":[{"name":"German Center for Neurodegenerative Diseases (DZNE) Berlin, Berlin, Germany"},{"name":"Charit\u00e9 Universit\u00e4tsmedizin Berlin, Department of Psychiatry and Neurosciences, Hindenburgdamm 30, 12203 Berlin, Germany"},{"name":"Charit\u00e9 Universit\u00e4tsmedizin Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125 Berlin, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0411-9204","authenticated-orcid":false,"given":"Julian","family":"Hellmann-Regen","sequence":"additional","affiliation":[{"name":"German Center for Neurodegenerative Diseases (DZNE) Berlin, Berlin, Germany"},{"name":"Charit\u00e9 Universit\u00e4tsmedizin Berlin, Department of Psychiatry and Neurosciences, Hindenburgdamm 30, 12203 Berlin, Germany"},{"name":"Charit\u00e9 Universit\u00e4tsmedizin Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125 Berlin, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7601-6410","authenticated-orcid":false,"given":"Lukas","family":"Preis","sequence":"additional","affiliation":[{"name":"Charit\u00e9 Universit\u00e4tsmedizin Berlin, Department of Psychiatry and Neurosciences, Hindenburgdamm 30, 12203 Berlin, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2497-9324","authenticated-orcid":false,"given":"Daria","family":"Gref","sequence":"additional","affiliation":[{"name":"German Center for Neurodegenerative Diseases (DZNE) Berlin, Berlin, Germany"},{"name":"Charit\u00e9 Universit\u00e4tsmedizin Berlin, ECRC Experimental and Clinical Research Center, Lindenberger Weg 80, 13125 Berlin, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7596-0979","authenticated-orcid":false,"given":"Josef","family":"Priller","sequence":"additional","affiliation":[{"name":"German Center for Neurodegenerative Diseases (DZNE) Berlin, Berlin, Germany"},{"name":"Department of Psychiatry and Psychotherapy, Charit\u00e9, Charit\u00e9platz 1, 10117 Berlin, Germany"},{"name":"Department of Psychiatry and Psychotherapy, School of Medicine and Health, Technical University of Munich, and German Center for Mental Health (DZPG), Munich, Germany"},{"name":"University of Edinburgh and UK DRI, Edinburgh, United Kingdom"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8976-7309","authenticated-orcid":false,"given":"Eike","family":"Jakob Spruth","sequence":"additional","affiliation":[{"name":"German Center for Neurodegenerative Diseases (DZNE) Berlin, Berlin, Germany"},{"name":"Department of Psychiatry and Psychotherapy, Charit\u00e9, Charit\u00e9platz 1, 10117 Berlin, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria","family":"Gemenetzi","sequence":"additional","affiliation":[{"name":"German Center for Neurodegenerative Diseases (DZNE) Berlin, Berlin, Germany"},{"name":"Department of Psychiatry and Psychotherapy, Charit\u00e9, Charit\u00e9platz 1, 10117 Berlin, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9540-8700","authenticated-orcid":false,"given":"Anja","family":"Schneider","sequence":"additional","affiliation":[{"name":"German Center for Neurodegenerative Diseases (DZNE) Bonn, Venusberg-Campus 1\/99, 53127, Bonn, Germany"},{"name":"Department of Cognitive Disorders and Old Age Psychiatry, University Hospital Bonn, Venusberg-Campus 1, 53127, Bonn, 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