Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2025 Aug 19.
doi: 10.1038/s41591-025-03890-6. Online ahead of print.

A plasma proteomics-based candidate biomarker panel predictive of amyotrophic lateral sclerosis

Affiliations

A plasma proteomics-based candidate biomarker panel predictive of amyotrophic lateral sclerosis

Ruth Chia et al. Nat Med. .

Abstract

Identifying a reliable biomarker for amyotrophic lateral sclerosis (ALS) is crucial for clinical practice. Here, in this cross-sectional study, we used the Olink Explore 3072 platform to investigate plasma proteomics as a biomarker tool for this neurodegenerative condition. Thirty-three proteins were differentially abundant in the plasma of patients with ALS (n = 183) versus controls (n = 309). We replicated our findings in an independent cohort (n = 48 patients with ALS and n = 75 controls). We then applied machine learning to create a model that diagnosed ALS with high accuracy (area under the curve, 98.3%). By analyzing plasma samples from individuals before ALS symptoms emerged, we estimated the age of clinical onset and showed that the disease process-impacting skeletal muscle, nerves and energy metabolism-occurs years before symptoms appear. Our research suggests that plasma proteins can be a biomarker for this fatal disease and offers molecular insights into its prodromal phase.

PubMed Disclaimer

Conflict of interest statement

Competing interests: R.C., R.M., J.Y.K., L.F., C.L.D., S.W.S. and B.J.T. have a patent pending (US Patent application no. 63/717,807) on the diagnostic testing for ALS based on the proteomic panel. B.J.T. holds patents on the clinical testing and therapeutic intervention for the hexanucleotide repeat expansion of C9orf72. B.J.T. and S.W.S. receive research support from Cerevel Therapeutics. S.W.S. serves on the scientific advisory committees of the Lewy Body Dementia Association, Mission MSA and the GBA1 Canada Initiative. The other authors declare no competing interests.

References

    1. Feldman, E. L. et al. Amyotrophic lateral sclerosis. Lancet 400, 1363–1380 (2022). - PubMed - PMC
    1. Arthur, K. C. et al. Projected increase in amyotrophic lateral sclerosis from 2015 to 2040. Nat. Commun. 7, 12408 (2016). - PubMed - PMC
    1. Fournier, C. N. Considerations for amyotrophic lateral sclerosis (ALS) clinical trial design. Neurotherapeutics 19, 1180–1192 (2022). - PubMed - PMC
    1. Masrori, P. & Van Damme, P. Amyotrophic lateral sclerosis: a clinical review. Eur. J. Neurol. 27, 1918–1929 (2020). - PubMed
    1. Turner, M. R. et al. Controversies and priorities in amyotrophic lateral sclerosis. Lancet Neurol. 12, 310–322 (2013). - PubMed - PMC

LinkOut - more resources