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Objective: To compare the diagnostic criteria of 2006 (DC 2006) and 2015 (DC 2015) in the Russian population of patients with suspected neuromyelitis optica spectrum disorders (NMOSD), with the calculation of their sensitivity, specificity, accuracy and predictive value.
Material And Methods: We reviewed medical records of suspected NMOSD patients who were therefore examined for the presence of serum autoantibodies targeting the aquaporin-4 water channel protein (AQP4-IgG) in 6 specialized Russian (Nizhny Novgorod and Moscow) medical centers. One hundred patients (78 female), aged 17 to 74 years (mean 38.1±13.3 years), were included. The follow-up period ranged from 4 to 108 months (mean 59.7±31.6 months).
Results: During the follow-up the diagnosis of NMOSD was confirmed in 32 people, and 68 patients had diagnoses different from NMOSD. At the disease onset, 68.8% of patients were seropositive for AQP4-IgG. The mean time for confirming NMOSD diagnosis was 15.2±14.2 months. At the disease onset, 36% of patients fulfilled the DC 2015, the diagnosis was subsequently confirmed in 77.8% out of them. 26% of the patients fulfilled the DC 2006, the diagnosis was subsequently confirmed in 84.6% out of them. The sensitivity of DC 2006/DC 2015 was 69%/88%, specificity 94%/88%, accuracy 86%/88%, negative predictive value 85%/94%, positive predictive value 86%/78%.
Conclusion: The specificity, sensitivity and accuracy of modern diagnostic criteria for NMOSD In Russian patients is comparable to those obtained in foreign studies. DC 2015 helps to diagnose NMOSD earlier than DC 2006, but they have a lower specificity.
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http://dx.doi.org/10.17116/jnevro202412407216 | DOI Listing |
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