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| 024 | 7 | _ | |a 10.1038/s41591-025-04080-0 |2 doi |
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| 024 | 7 | _ | |a 1078-8956 |2 ISSN |
| 024 | 7 | _ | |a 1546-170X |2 ISSN |
| 037 | _ | _ | |a DZNE-2026-00219 |
| 041 | _ | _ | |a English |
| 082 | _ | _ | |a 610 |
| 100 | 1 | _ | |a Huber, Hanna |0 P:(DE-2719)9003257 |b 0 |e First author |
| 245 | _ | _ | |a A minimally invasive dried blood spot biomarker test for the detection of Alzheimer's disease pathology. |
| 260 | _ | _ | |a [New York, NY] |c 2026 |b Springer Nature |
| 336 | 7 | _ | |a article |2 DRIVER |
| 336 | 7 | _ | |a Output Types/Journal article |2 DataCite |
| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1772012822_9598 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a ARTICLE |2 BibTeX |
| 336 | 7 | _ | |a JOURNAL_ARTICLE |2 ORCID |
| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 520 | _ | _ | |a Blood biomarkers have emerged as accurate tools for detecting Alzheimer's disease (AD) pathology, offering a minimally invasive alternative to traditional diagnostic methods such as imaging and cerebrospinal fluid (CSF) analysis. Yet, the logistics surrounding venipuncture for blood collection, although considerably simpler than the acquisition of imaging and CSF, require precise processing and storage specific to AD biomarkers that are still guided by medical personnel. Consequently, limitations in their widescale use in research and broader clinical implementation exist. The DROP-AD project investigates the potential of dried plasma spot (DPS) and dried blood spot (DBS) analysis, derived from capillary blood, for detecting AD biomarkers, including phosphorylated tau at amino acid 217 (p-tau217), glial fibrillary acidic protein and neurofilament light. Here, 337 participants from 7 centers were included, with 304 participants providing paired capillary DPS or DBS and venous plasma samples. We observed strong correlations between DPS p-tau217 and venous plasma p-tau217 (rS = 0.74, P < 0.001). DPS p-tau217 progressively increased with increasing disease severity, and showed good accuracy in predicting CSF biomarker positivity (area under the curve = 0.864). Similarly, we demonstrated the successful detection of glial fibrillary acidic protein and neurofilament light with strong correlations between DBS and DPS, respectively, using paired venous plasma samples. Notably, the method was also effective in individuals with Down syndrome, a population at high genetic risk for AD but in whom standard blood sampling by venipuncture may be more complicated, revealing elevated biomarkers in those with dementia compared with asymptomatic individuals. The study also explored unsupervised blood collection, finding high concordance between supervised and self-collected samples. These findings underscore the potential of dried blood collection and capillary blood as a minimally invasive, scalable approach for AD biomarker testing in research settings. Yet, further refinement of collection and analytical protocols is needed to fully translate this approach to be viable and useful as a clinical tool. |
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| 650 | _ | 7 | |a Biomarkers |2 NLM Chemicals |
| 650 | _ | 7 | |a tau Proteins |2 NLM Chemicals |
| 650 | _ | 7 | |a Neurofilament Proteins |2 NLM Chemicals |
| 650 | _ | 7 | |a neurofilament protein L |2 NLM Chemicals |
| 650 | _ | 7 | |a Glial Fibrillary Acidic Protein |2 NLM Chemicals |
| 650 | _ | 7 | |a MAPT protein, human |2 NLM Chemicals |
| 650 | _ | 2 | |a Humans |2 MeSH |
| 650 | _ | 2 | |a Alzheimer Disease: blood |2 MeSH |
| 650 | _ | 2 | |a Alzheimer Disease: diagnosis |2 MeSH |
| 650 | _ | 2 | |a Alzheimer Disease: pathology |2 MeSH |
| 650 | _ | 2 | |a Dried Blood Spot Testing: methods |2 MeSH |
| 650 | _ | 2 | |a Biomarkers: blood |2 MeSH |
| 650 | _ | 2 | |a Biomarkers: cerebrospinal fluid |2 MeSH |
| 650 | _ | 2 | |a Female |2 MeSH |
| 650 | _ | 2 | |a tau Proteins: blood |2 MeSH |
| 650 | _ | 2 | |a Male |2 MeSH |
| 650 | _ | 2 | |a Aged |2 MeSH |
| 650 | _ | 2 | |a Neurofilament Proteins: blood |2 MeSH |
| 650 | _ | 2 | |a Glial Fibrillary Acidic Protein: blood |2 MeSH |
| 650 | _ | 2 | |a Aged, 80 and over |2 MeSH |
| 650 | _ | 2 | |a Middle Aged |2 MeSH |
| 650 | _ | 2 | |a Phosphorylation |2 MeSH |
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