Neurological disorders

Protein Study Reveals New Alzheimer's Clues, Breast Cancer Link

Published JUL 16 2025

Story

Above: An MRI scan of a brain showing early Dementia/Alzheimer's on May 30, 2025, in London, England. Image credit: Peter Dazeley/Getty Images

The Facts

New research published in Nature Medicine analyzed around 250 million protein measurements from over 35,000 biosamples across 23 research groups, creating the world's largest neurodegenerative disease-focused proteomics dataset to predict brain diseases.
Nature
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They identified distinct protein signatures for different neurodegenerative diseases, with Alzheimer's patients showing elevated levels of proteins like ACHE and SPC25, while displaying decreased levels of proteins including VAT1 and GPD1.
Science News
Nature
The study revealed that carriers of the APOE ε4 gene variant, the biggest genetic risk factor for Alzheimer's, share a specific blood protein signature regardless of their actual disease diagnosis, appearing in people with various brain diseases or no neurodegeneration at all.
Science News
Nature
Scientists developed a 256-protein clinical severity signature that can predict dementia progression across Alzheimer's, Parkinson's, and frontotemporal dementia, with signature values correlating strongly with Clinical Dementia Rating scores (68% in training, 58% in test datasets).
Science News
Nature
The research demonstrated that different neurodegenerative diseases show distinct patterns of accelerated organ aging, with Alzheimer's linked to brain, artery, liver, and intestine aging, while Parkinson's is uniquely connected to muscle aging patterns.
Science News
Nature
This comes amid other Alzheimer's studies, including one that's attempting to develop a vaccine to target the Alzheimer's-linked tau protein, and another that found breast cancer survivors had an 8% lower risk of developing the disease.
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The Spin

Narrative A

Early Alzheimer's detection via protein blood tests is crucial to slow disease progression and improve outcomes. Prioritizing such research is essential to deliver timely care and support for millions. Tremendous progress has already been made, and studies like this must be placed at the forefront of neurodegenerative disease research.

USA Today

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Narrative B

Dementia doesn't have to be the ever-present pandemic we currently see it as. It's largely driven by modifiable social and environmental factors, like poor diet, pollution, and isolation. Lifestyle changes like the Mediterranean and MIND diets could prevent cognitive decline, reducing reliance on expensive drugs.