Abstract
Background
Sporadic Creutzfeldt–Jakob disease (sCJD) is a human prion disease that is a relatively common differential diagnosis in dementia patients. Therefore it needs a good diagnostic tool. Brain autopsy is the golden standard for the diagnosis of CJD; however, a less invasive technique is 14-3-3 protein measurement in the cerebrospinal fluid (CSF). In this systematic review, we compared the diagnostic value of the 14-3-3 protein measurement to the newer RT-QuIC test and a variant of RT-QuIC where nasal brushing is used to collect the samples.
Methods
The search via MeSH terms and quality assessment was carried out by two individual researchers.
Results
In 14-3-3 and RT-QuIC the sensitivity was comparable, respectively, 88% and 86%. Specificity however was higher in RT-QuIC 99.5% compared to 80% in 14-3-3. Nasal brushing showed the best results with a sensitivity of 97% and a specificity of 100%.
Conclusion
Nasal brushing, despite being the best diagnostic tool according to the data, needs more study since there has only been a few studies regarding the technique. It is safe to say that due to the high specificity, RT-QuIC is superior to 14-3-3 testing.
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A possible conflict of interest is that one of the authors is now editor-in-chief of this journal (Patrick Cras, PhD, MD).
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This article does not contain any studies with human participants or animals performed by any of the authors.
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Behaeghe, O., Mangelschots, E., De Vil, B. et al. A systematic review comparing the diagnostic value of 14-3-3 protein in the cerebrospinal fluid, RT-QuIC and RT-QuIC on nasal brushing in sporadic Creutzfeldt–Jakob disease. Acta Neurol Belg 118, 395–403 (2018). https://doi.org/10.1007/s13760-018-0995-8
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DOI: https://doi.org/10.1007/s13760-018-0995-8