A Two-Biomarker Signal for Alzheimer’s Disease - Summary - MDSpire

A Two-Biomarker Signal for Alzheimer’s Disease

Dual plasma biomarkers may improve identification of established Alzheimer’s disease and signal faster decline

  • By

  • Henry Thomas

  • March 30, 2026

  • 3 min

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Objective:

To evaluate the effectiveness of combining plasma biomarkers eMTBR-tau243 and p-tau217 in identifying established Alzheimer’s disease and predicting cognitive decline.

Key Findings:
  • The combination of eMTBR-tau243 with p-tau217 improved identification of established Alzheimer’s disease with 81% accuracy.
  • The two-biomarker approach showed an 84% positive predictive value for established disease.
  • eMTBR-tau243 demonstrated 87% accuracy in identifying patients with high tau pathology among those positive for p-tau217.
  • Higher levels of eMTBR-tau243 were associated with greater tau accumulation and faster cognitive decline.
Interpretation:

The findings support a two-step testing strategy to differentiate between asymptomatic amyloid pathology and clinically significant Alzheimer’s disease, enhancing diagnostic precision.

Limitations:
  • The study population was primarily from secondary memory clinics in Sweden, limiting generalizability.
  • Further validation in broader clinical settings is needed.
Conclusion:

Combining biomarkers linked to different stages of Alzheimer’s pathology may improve diagnostic accuracy and patient stratification for clinical and research purposes.

Original Source(s)

A Two-Biomarker Signal for Alzheimer’s Disease

  • by Henry Thomas

  • March 30, 2026

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