Kappa Free Light Chains in Multiple Sclerosis as a Marker of Intrathecal Humoral Response
Author Information
Author(s): Candeloro Raffaella, Galloppa Maila, Lombardo Laura, Laudisi Michele, Ghisellini Sara, Negri Giovanna, Ferri Caterina, Marcialis Carla, Bellini Tiziana, Pugliatti Maura, Castellazzi Massimiliano
Primary Institution: University of Ferrara
Hypothesis
This study aims to assess the accuracy of KFLCs in diagnosing MS and compare its results to the ‘gold standard’ IgG oligoclonal bands, considering potential sex differences.
Conclusion
The study highlights the potential of KFLCs as a biomarker for MS but emphasizes the need for sex-specific thresholds to improve diagnostic accuracy.
Supporting Evidence
- KFLCs showed a high sensitivity for both sexes with respect to the diagnosis of MS, with values between 74.42% and 93.03%.
- The specificity of the various formulas was much lower for females when compared to males.
- Cohen’s kappa showed substantial agreement for men and moderate agreement for women between the KFLC indices and OCB.
- Sex-specific thresholds for KFLCs could improve diagnostic accuracy in MS, particularly for women.
Takeaway
Researchers found that kappa free light chains can help diagnose multiple sclerosis, but they work better for men than for women.
Methodology
This retrospective monocentric study included 233 neurological patients who underwent lumbar puncture for diagnostic purposes, evaluating KFLCs in terms of sensitivity, specificity, and accordance.
Potential Biases
The specificity of KFLCs was lower for females than for males, leading to potential false positives.
Limitations
The study's limitations include its sample size and monocentric nature, and it did not include a healthy control group.
Participant Demographics
The study included 233 patients: 149 with MS (43 males and 106 females) and 84 with other neurological diseases.
Statistical Information
P-Value
0.0451
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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