A new practical diagnostic test for Creutzfeldt-Jakob disease.
نویسندگان
چکیده
To the Editor—Our article “A Practical Approach to Avoiding Iatrogenic Creutzfeldt-Jakob Disease (CJD) from Invasive Instruments” included the recommendation that all patients with either cerebellar or mental abnormalites be tested for elevated levels of 14-3-3 protein in spinal fluid. Although this test has proved invaluable as a diagnostic aid for nearly 2 decades, the protein was from the start recognized as being a “marker protein” that was not causally related to CJD, and efforts to detect the pathogenetic prion protein in spinal fluid have continued. Two just published independent studies of a newly modified prion protein amplification test named RT-QuIC (real-time quaking-induced conversion) now justify those efforts. One study of 48 CJD and 39 control patients yielded a sensitivity of 96% and specificity of 100%; the second study of 110 patients with various forms of prion disease and 400 control patients yielded a sensitivity of 85% and specificity of 99%. Test results are available within 24 hours of specimen collection. We regret that the timing of our diagnostic test recommendations just missed the pubication dates of these 2 new articles but are delighted to be able to add the RT-QuIC spinal fluid test as perhaps the easiest, fastest, most accurate, and practical premortem diagnostic test for prion disease.
منابع مشابه
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ورودعنوان ژورنال:
- Infection control and hospital epidemiology
دوره 36 7 شماره
صفحات -
تاریخ انتشار 2015