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EnglishObjective: To assess the usefulness of the κ free light chain index (κFLCi) as a screening test to identify patients with suspected MS. Methods: The study included 56 patients with a request to test for oligoclonal bands (OCBs). OCBs were detected by isoelectric focusing, followed by immunofixation. Cerebrospinal fluid (CSF) and serum κFLC were measured by a turbidimetric assay. Also, the κFLC index (κFLCi) was calculated. Results: CSF κFLC levels and κFLCi were significantly higher in patients with multiple sclerosis (MS) than in patients with other neurological diseases (NDs; P < .001 and P < .001, respectively). At the cutoff value of 2.9, the κFLCi detected MS with sensitivity of 97% and specificity of 65%. Overall, 92% patients with κFLCi of 2.9 or greater and who had tested positive for OCBs were diagnosed as having MS. Conclusion: Our findings support the use of κFLCi as a screening test when MS is suspected, followed by OCB detection as a confirmatory test
| Data di pubblicazione: | 2020 |
| Titolo: | Clinical Use of κ Free Light Chains Index as a Screening Test for Multiple Sclerosis |
| Autori: | CIACCIO, Marcello (Corresponding) |
| Citazione: | Agnello, L., Lo Sasso, B., Salemi, G., Altavilla, P., Pappalardo, E.M., Caldarella, R., et al. (2020). Clinical Use of κ Free Light Chains Index as a Screening Test for Multiple Sclerosis. LABORATORY MEDICINE. |
| Rivista: | |
| Digital Object Identifier (DOI): | 10.1093/labmed/lmz073 |
| Abstract: | Objective: To assess the usefulness of the κ free light chain index (κFLCi) as a screening test to identify patients with suspected MS. Methods: The study included 56 patients with a request to test for oligoclonal bands (OCBs). OCBs were detected by isoelectric focusing, followed by immunofixation. Cerebrospinal fluid (CSF) and serum κFLC were measured by a turbidimetric assay. Also, the κFLC index (κFLCi) was calculated. Results: CSF κFLC levels and κFLCi were significantly higher in patients with multiple sclerosis (MS) than in patients with other neurological diseases (NDs; P < .001 and P < .001, respectively). At the cutoff value of 2.9, the κFLCi detected MS with sensitivity of 97% and specificity of 65%. Overall, 92% patients with κFLCi of 2.9 or greater and who had tested positive for OCBs were diagnosed as having MS. Conclusion: Our findings support the use of κFLCi as a screening test when MS is suspected, followed by OCB detection as a confirmatory test |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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