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Associations between tau PET and CSF MTBR243 do not vary by sex
Carling G. Robinson, Alexa Pichet Binette, Kanta Horie, Chihiro Sato, Suzanne Elizabeth Schindler, Nicolas R. Barthélemy, Randall John Bateman, Tammie L.S. Benzinger et al.. Alzheimer s & Dementia, 2025-12-01
Topic: Brain proteins, microglia and lab models
In both cohorts there were significant associations between CSF MTBR-tau243 and the temporal meta-ROI (BioFINDER-2: t = 17.1, p < 0.001, Knight-ADRC: t=11.0, p <0.001). This association was not different by sex (BioFINDER-2: t = 0.54, p = 0.6, Knight-ADRC: t=0.1, p = 0.9) (Figure 1). This finding remained consistent within the Aβ-positive subsets of both cohorts (Figure 2). Across two cohorts we found that sex did not moderate the relationship between tau-PET and CSF MTBR-tau243, two distinct markers of aggregated tau pathology. This suggests the sex effects found in tau-PET likely represent a true biological finding not specifically tied to tau-PET methodology.
Key findings
- In both cohorts there were significant associations between CSF MTBR-tau243 and the temporal meta-ROI (BioFINDER-2: t = 17.1, p < 0.001, Knight-ADRC: t=11.0, p <0.001).
- This association was not different by sex (BioFINDER-2: t = 0.54, p = 0.6, Knight-ADRC: t=0.1, p = 0.9) (Figure 1).
- This finding remained consistent within the Aβ-positive subsets of both cohorts (Figure 2).
- Across two cohorts we found that sex did not moderate the relationship between tau-PET and CSF MTBR-tau243, two distinct markers of aggregated tau pathology.
- This suggests the sex effects found in tau-PET likely represent a true biological finding not specifically tied to tau-PET methodology.
Why it matters
This study found that the relationship between tau PET and a spinal fluid marker of tau did not differ by sex across two cohorts. It is an observational biomarker study and does not test any treatment, cure, or prevention.
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Study details
- Study designcross-sectional
- Evidence strengthModerate
How this study scored 41/100
Published in a peer-reviewed journal, and it is a snapshot of people at one point in time. Scored zero for sample size, effect reported, studied in people and randomised / blinded because the record does not state it.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (Alzheimer s & Dementia) |
| Journal's citation record | 2 / 4 | Alzheimer s & Dementia: journal h-index 228 (OpenAlex, 2026-10-29) |
| Study design | 4 / 12 | A snapshot of people at one point in time |
| Strength of evidence | 3 / 5 | Rated “moderate” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 4 / 5 | 2025 — within 3 year(s) of the newest study here |
| Sample size | 0 / 4 | Participant count not stated — scores zero (not stated in the record — scored 0) |
| Effect reported | 0 / 3 | No effect size reported — scores zero (not stated in the record — scored 0) |
| Studied in people | 0 / 3 | Not stated whether this was studied in people — scores zero (not stated in the record — scored 0) |
| Randomised / blinded | 0 / 2 | No randomisation or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | 0 / 7 | Cited 0 times (OpenAlex, 2026-10-10) |
| Citations per year | 0 / 5 | 0.0 citations a year over 3 year(s) since 2025 |
| Impact for its field and year | 0 / 6 | Cited 0.0× the average for papers of its field and year (OpenAlex FWCI) |
| Cited by studies here | 0 / 6 | No other study in this library cites it |
| Still being cited | 0 / 4 | Cited 0 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | 3 / 4 | Last-listed author Rik Ossenkoppele: h-index 84 (OpenAlex, whole career) |
| Institution's track record | 2 / 3 | Washington University in St. Louis: institution h-index 1,962 (OpenAlex) |
| Multi-centre collaboration | 2 / 3 | OpenAlex lists 8 institution(s) in 4 countries |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 41443270) |
| Free to read | 2 / 2 | Free to read |
| Total | 41 / 100 | — |
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Read the original
- DOI: 10.1002/alz70856_098213
- PubMed: 41443270
- Original source →
- Free full text: Alzheimer s & Dementia →
Full text: free to read — OpenAlex lists this copy as free to read: the link above (checked 6 Feb 1020).
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. The record's author list ends in “et al.”, so not every author is named. Check the citation against the original before you use it.
APA 7th
Robinson, C. G., Binette, A. P., Horie, K., Sato, C., Schindler, S. E., Barthélemy, N. R., et al. (2025). Associations between tau PET and CSF MTBR243 do not vary by sex. Alzheimer s & Dementia. https://doi.org/10.1002/alz70856_098213
Vancouver
Robinson CG, Binette AP, Horie K, Sato C, Schindler SE, Barthélemy NR, et al. Associations between tau PET and CSF MTBR243 do not vary by sex. Alzheimer s & Dementia. 2025. doi:10.1002/alz70856_098213. PMID: 41443270.
BibTeX
@article{robinson2025-41443270,
author = {Robinson, Carling G. and Binette, Alexa Pichet and Horie, Kanta and Sato, Chihiro and Schindler, Suzanne Elizabeth and Barthélemy, Nicolas R. and Bateman, Randall John and Benzinger, Tammie L.S. and others},
title = {{Associations between tau PET and CSF MTBR243 do not vary by sex}},
journal = {Alzheimer s \& Dementia},
year = {2025},
doi = {10.1002/alz70856_098213},
pmid = {41443270},
url = {https://doi.org/10.1002/alz70856_098213}
}
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