What question did this study set out to answer?

This research aims to evaluate the effectiveness of Aβ PET semi-quantitative methods for detecting amyloid deposition in preclinical autosomal dominant Alzheimer’s disease.

May 14, 2026Alzheimer s Research & TherapyOpen Access

Comparative performance of semi-quantitative methods for amyloid deposition in preclinical autosomal dominant Alzheimer’s disease

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This research aims to evaluate the effectiveness of Aβ PET semi-quantitative methods for detecting amyloid deposition in preclinical autosomal dominant Alzheimer’s disease.
Nineteen asymptomatic ADAD mutation carriers and 21 cognitively normal controls were imaged using 18F-MK6240 and 11C-PIB PET.
Aβ PET images were analyzed with visual assessment, SUVR, Z-score, and CL methods.
Amyloid positivity was defined based on uptake levels and classification into tau-positive and tau-negative groups.
In the Tau+ group, Aβ burden in the caudate and putamen reached 100% positivity; 75%-80% positivity was observed in early cortical regions.
Visual assessment and Z-scores were highly concordant, with all Tau+ participants classified as Aβ-positive.
The CL scale underestimates Aβ burden in ADAD, particularly for those with a striatal-dominant pattern.

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Implication

Randomized trial compares performance of Aβ PET metrics for amyloid detection in asymptomatic ADAD carriers, suggesting improved diagnostics.

Cite This Study

Zhou et al. (2026) studied this question.

synapsesocial.com/papers/6a0567bca550a87e60a1ff2c https://doi.org/10.1186/s13195-026-02069-6

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Implication

Randomized trial compares performance of Aβ PET metrics for amyloid detection in asymptomatic ADAD carriers, suggesting improved diagnostics.

Comparative performance of semi-quantitative methods for amyloid deposition in preclinical autosomal dominant Alzheimer’s disease

Key Points

Discussion

Implication

Cite This Study

Comparative performance of semi-quantitative methods for amyloid deposition in preclinical autosomal dominant Alzheimer’s disease

Key Points

Discussion

Implication

Cite This Study

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