000285734 001__ 285734 000285734 005__ 20260320145858.0 000285734 0247_ $$2doi$$a10.1002/alz.71296 000285734 0247_ $$2pmid$$apmid:41859776 000285734 0247_ $$2ISSN$$a1552-5260 000285734 0247_ $$2ISSN$$a1552-5279 000285734 037__ $$aDZNE-2026-00291 000285734 041__ $$aEnglish 000285734 082__ $$a610 000285734 1001_ $$0P:(DE-2719)9001249$$aWagemann, Olivia$$b0$$eFirst author 000285734 245__ $$aCombining blood biomarkers and the German version of the Dementia Screening Questionnaire for Individuals with Intellectual Disabilities (DSQIID-G) for diagnosing cognitive decline in Down syndrome. 000285734 260__ $$aHoboken, NJ$$bWiley$$c2026 000285734 3367_ $$2DRIVER$$aarticle 000285734 3367_ $$2DataCite$$aOutput Types/Journal article 000285734 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1774014942_12446 000285734 3367_ $$2BibTeX$$aARTICLE 000285734 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000285734 3367_ $$00$$2EndNote$$aJournal Article 000285734 520__ $$aIndividuals with Down syndrome (DS) are at risk for Alzheimer's disease (AD). However, diagnosis remains challenging due to variability of intellectual ability and symptom presentation. To investigate whether serum AD biomarkers enhance accuracy of the German version of the Dementia Screening Questionnaire for Individuals with Intellectual Disabilities (DSQIID-G), we combined test scores with neurofilament light chain (NfL) and glial fibrillary acidic protein (GFAP) levels.Seventy-eight DS individuals (49% female) completed the DSQIID-G; previous cohort data were added for a pooled sample (n = 164, 47% female). Serum NfL and GFAP were assessed using the automated microfluid Ella system.Combining the DSQIID-G with NfL or GFAP resulted in improved accuracy in every diagnostic subgroup. The Youden index in the pooled samples yielded a cut-off score at 6.5.The DSQIID-G is a robust screening tool and its combination with AD blood biomarkers aids earlier identification of individuals requiring further diagnostics for DS-associated AD. 000285734 536__ $$0G:(DE-HGF)POF4-353$$a353 - Clinical and Health Care Research (POF4-353)$$cPOF4-353$$fPOF IV$$x0 000285734 588__ $$aDataset connected to CrossRef, PubMed, , Journals: pub.dzne.de 000285734 650_7 $$2Other$$aAlzheimer's disease 000285734 650_7 $$2Other$$aDementia Screening Questionnaire for Individuals with Intellectual Disabilities 000285734 650_7 $$2Other$$aDown syndrome 000285734 650_7 $$2Other$$ablood biomarker 000285734 650_7 $$2Other$$aglial fibrillary acidic protein 000285734 650_7 $$2Other$$aneurofilament light chain 000285734 650_7 $$2Other$$ascreening 000285734 650_7 $$2NLM Chemicals$$aBiomarkers 000285734 650_7 $$2NLM Chemicals$$aNeurofilament Proteins 000285734 650_7 $$2NLM Chemicals$$aneurofilament protein L 000285734 650_7 $$2NLM Chemicals$$aGlial Fibrillary Acidic Protein 000285734 650_2 $$2MeSH$$aHumans 000285734 650_2 $$2MeSH$$aDown Syndrome: complications 000285734 650_2 $$2MeSH$$aDown Syndrome: blood 000285734 650_2 $$2MeSH$$aFemale 000285734 650_2 $$2MeSH$$aMale 000285734 650_2 $$2MeSH$$aBiomarkers: blood 000285734 650_2 $$2MeSH$$aNeurofilament Proteins: blood 000285734 650_2 $$2MeSH$$aMiddle Aged 000285734 650_2 $$2MeSH$$aCognitive Dysfunction: diagnosis 000285734 650_2 $$2MeSH$$aCognitive Dysfunction: blood 000285734 650_2 $$2MeSH$$aSurveys and Questionnaires 000285734 650_2 $$2MeSH$$aGlial Fibrillary Acidic Protein: blood 000285734 650_2 $$2MeSH$$aGermany 000285734 650_2 $$2MeSH$$aIntellectual Disability: blood 000285734 650_2 $$2MeSH$$aIntellectual Disability: complications 000285734 650_2 $$2MeSH$$aAged 000285734 650_2 $$2MeSH$$aDementia: diagnosis 000285734 650_2 $$2MeSH$$aDementia: blood 000285734 650_2 $$2MeSH$$aAdult 000285734 7001_ $$aGötz, Charlotte$$b1 000285734 7001_ $$aWlasich, Elisabeth$$b2 000285734 7001_ $$aSandkühler, Katja$$b3 000285734 7001_ $$0P:(DE-2719)9001508$$aPrix, Catharina$$b4$$udzne 000285734 7001_ $$0P:(DE-2719)9002610$$aStockbauer, Anna$$b5$$udzne 000285734 7001_ $$0P:(DE-2719)9003208$$aMarth, Lena$$b6$$udzne 000285734 7001_ $$0P:(DE-2719)9002626$$aJäck, Alexander$$b7$$udzne 000285734 7001_ $$0P:(DE-2719)9002026$$aHalbgebauer, Steffen$$b8$$udzne 000285734 7001_ $$0P:(DE-2719)9002007$$aTumani, Hayrettin$$b9$$udzne 000285734 7001_ $$0P:(DE-2719)2811373$$aHöglinger, Günter U$$b10$$udzne 000285734 7001_ $$0P:(DE-2719)2811659$$aLevin, Johannes$$b11$$udzne 000285734 7001_ $$0P:(DE-2719)9001761$$aNübling, Georg$$b12$$eLast author$$udzne 000285734 773__ $$0PERI:(DE-600)2201940-6$$a10.1002/alz.71296$$gVol. 22, no. 3, p. e71296$$n3$$pe71296$$tAlzheimer's and dementia$$v22$$x1552-5260$$y2026 000285734 8564_ $$uhttps://pub.dzne.de/record/285734/files/DZNE-2026-00291.pdf$$yRestricted 000285734 8564_ $$uhttps://pub.dzne.de/record/285734/files/DZNE-2026-00291.pdf?subformat=pdfa$$xpdfa$$yRestricted 000285734 9101_ $$0I:(DE-588)1065079516$$6P:(DE-2719)9001249$$aDeutsches Zentrum für Neurodegenerative Erkrankungen$$b0$$kDZNE 000285734 9101_ $$0I:(DE-HGF)0$$6P:(DE-2719)9001508$$aExternal Institute$$b4$$kExtern 000285734 9101_ $$0I:(DE-HGF)0$$6P:(DE-2719)9002610$$aExternal Institute$$b5$$kExtern 000285734 9101_ $$0I:(DE-588)1065079516$$6P:(DE-2719)9003208$$aDeutsches Zentrum für Neurodegenerative Erkrankungen$$b6$$kDZNE 000285734 9101_ $$0I:(DE-HGF)0$$6P:(DE-2719)9002626$$aExternal Institute$$b7$$kExtern 000285734 9101_ $$0I:(DE-588)1065079516$$6P:(DE-2719)9002026$$aDeutsches Zentrum für Neurodegenerative Erkrankungen$$b8$$kDZNE 000285734 9101_ $$0I:(DE-HGF)0$$6P:(DE-2719)9002007$$aExternal Institute$$b9$$kExtern 000285734 9101_ $$0I:(DE-588)1065079516$$6P:(DE-2719)2811373$$aDeutsches Zentrum für Neurodegenerative Erkrankungen$$b10$$kDZNE 000285734 9101_ $$0I:(DE-588)1065079516$$6P:(DE-2719)2811659$$aDeutsches Zentrum für Neurodegenerative Erkrankungen$$b11$$kDZNE 000285734 9101_ $$0I:(DE-588)1065079516$$6P:(DE-2719)9001761$$aDeutsches Zentrum für Neurodegenerative Erkrankungen$$b12$$kDZNE 000285734 9131_ $$0G:(DE-HGF)POF4-353$$1G:(DE-HGF)POF4-350$$2G:(DE-HGF)POF4-300$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$aDE-HGF$$bGesundheit$$lNeurodegenerative Diseases$$vClinical and Health Care Research$$x0 000285734 915__ $$0StatID:(DE-HGF)3001$$2StatID$$aDEAL Wiley$$d2025-11-11$$wger 000285734 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS$$d2025-11-11 000285734 915__ $$0StatID:(DE-HGF)0300$$2StatID$$aDBCoverage$$bMedline$$d2025-11-11 000285734 915__ $$0StatID:(DE-HGF)0320$$2StatID$$aDBCoverage$$bPubMed Central$$d2025-11-11 000285734 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bClarivate Analytics Master Journal List$$d2025-11-11 000285734 915__ $$0StatID:(DE-HGF)1110$$2StatID$$aDBCoverage$$bCurrent Contents - 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