1. The Predictive Value of Endpoint Quaking-Induced Conversion in Creutzfeldt-Jakob Disease.
- Author
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Budhram A, Taylor RG, Fuller J, Burneo JG, Knox JD, and Pasternak SH
- Subjects
- Aged, Aged, 80 and over, Female, Humans, Male, Middle Aged, Predictive Value of Tests, Creutzfeldt-Jakob Syndrome diagnosis, PrPSc Proteins analysis, Prion Proteins analysis
- Abstract
Creutzfeldt-Jakob disease (CJD) is a fatal neurological illness for which accurate diagnosis is paramount. Real-time quaking-induced conversion (RT-QuIC) is a prion-specific assay with high sensitivity and specificity for CJD. The Canadian endpoint quaking-induced conversion (EP-QuIC) test is similar, but unlike RT-QuIC there is little data regarding its diagnostic utility in clinical practice. In this exploratory predictive value analysis of EP-QuIC in CJD, the negative predictive value (NPV) and positive predictive value (PPV) was 100% and 83%, respectively, with one false-positive result identified. Re-testing this sample with an optimized EP-QuIC protocol eliminated this false-positive result, leading to a PPV of 100%.
- Published
- 2019
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