A comparison of tau and 14-3-3 protein in the diagnosis of Creutzfeldt-Jakob disease

作者：Hamlin Clive^*; Puoti Gianfranco; Berri Sally; Sting Elliott; Harris Carrie; Cohen Mark; Spear Charles; Bizzi Alberto; Debanne Sara M; Rowland Douglas Y

来源：Neurology, 2012, 79(6): 547-552.

DOI：10.1212/WNL.0b013e318263565f

Objective: To compare the respective efficiency of CSF tau (quantitative) and CSF 14-3-3 protein (qualitative) in the diagnosis of prion disease. %26lt;br%26gt;Methods: We made measurements on 420 live subjects, who subsequently underwent a postmortem neuropathology examination, including protein chemistry, immunohistochemistry, and histology. We performed tau by ELISA. We detected 14-3-3 protein by Western blot. Both assays were optimized for maximum efficiency (accuracy). %26lt;br%26gt;Results: We found tau and 14-3-3 proteins to be closely correlated, but tau had a significantly better ability to predict disease status than 14-3-3 protein. Also, tau distinguished disease status at least as well as when both assays%26apos; results are combined in a variety of ways. Importantly, the area under the receiver operating characteristic curve for tau (0.82) was significantly larger than that for 14-3-3 protein (0.68) (p %26lt; 0.001). Diagnostic test statistics are provided for the study subjects with 58.3% prevalence, and for a more typical, nonselected, 7.5% prevalence as received by our center. %26lt;br%26gt;Conclusion: In this study, tau is superior to 14-3-3 protein as a marker in the diagnosis of Creutzfeldt-Jakob disease, and is as efficient singly compared to a variety of combinations with 14-3-3 protein. This is the first study of this magnitude to examine prion disease diagnostic tests in a carefully characterized patient population with detailed statistical evaluation. Neurology (R) 2012;79:547-552

• 出版日期2012-8