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Monreal E, Fernández-Velasco JI, García-Soidán A, Sainz de la Maza S, Espiño M, Villarrubia N, Rodríguez-Jorge F, Chico-García JL, Sainz-Amo R, Masjuan J, Costa-Frossard L, Villar LM. Establishing the best combination of the kappa free light chain index and oligoclonal bands for an accurate diagnosis of multiple sclerosis. Front Immunol 2023; 14:1288169. [PMID: 37954589 PMCID: PMC10634415 DOI: 10.3389/fimmu.2023.1288169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 10/09/2023] [Indexed: 11/14/2023] Open
Abstract
Introduction The immunoglobulin kappa free light chain (KFLC) index has been proposed as a potentially suitable alternative to oligoclonal IgG bands (OCGB) for diagnosing multiple sclerosis (MS), offering automation and reduced processing time. However, there is no consensus on the preferred approach or how to combine both techniques. Methods This prospective cohort study aimed to determine the best utilization of OCGB and KFLC index in patients with a clinically isolated syndrome (CIS) followed for at least two years. OCGB and KFLC were assessed using isoelectric focusing and immunoblotting and turbidimetry, respectively. Sensitivity, specificity, and accuracy for diagnosing MS were calculated for each method. Results The study included 371 patients, with 260 (70.1 %) being women, and a median age of 34.9 (27.8 - 43.9) years. Using a cut-off value of 6.1, the KFLC index demonstrated a sensitivity and specificity of 86.3% and 93.9%, respectively. The sensitivity of OCGB (95.3%) was higher (p < 0.001 vs. KFLC index) and the specificity (100%) was comparable to that of the KFLC index (p = 0.5). The concordance between the methods was not uniform across all patients, with 97.8% agreement in patients with KFLC index ≥ 6.1 and 56.0 % in patients with KFLC index < 6.1. In patients with a KFLC index < 6.1, OCGB still identified 75.0 % of MS patients due to its higher sensitivity. An algorithm using the KFLC index as a screening tool and OCGB as an alternative for patients with a negative KFLC index result achieved an accuracy of 96.3 %. Discussion Combining the KFLC index and OCGB can provide an easily reproducible and accurate method for diagnosing MS, with OCGB primarily reserved for patients with a KFLC index < 6.1.
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Affiliation(s)
- Enric Monreal
- Department of Neurology, Hospital Universitario Ramón y Cajal, Red Española de Esclerosis Múltiple (REEM), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Universidad de Alcalá, Madrid, Spain
| | - José Ignacio Fernández-Velasco
- Department of Immunology, Hospital Universitario Ramón y Cajal, Red Española de Esclerosis Múltiple (REEM), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Universidad de Alcalá, Madrid, Spain
| | - Ana García-Soidán
- Department of Immunology, Hospital Universitario Ramón y Cajal, Red Española de Esclerosis Múltiple (REEM), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Universidad de Alcalá, Madrid, Spain
| | - Susana Sainz de la Maza
- Department of Neurology, Hospital Universitario Ramón y Cajal, Red Española de Esclerosis Múltiple (REEM), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Universidad de Alcalá, Madrid, Spain
| | - Mercedes Espiño
- Department of Immunology, Hospital Universitario Ramón y Cajal, Red Española de Esclerosis Múltiple (REEM), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Universidad de Alcalá, Madrid, Spain
| | - Noelia Villarrubia
- Department of Immunology, Hospital Universitario Ramón y Cajal, Red Española de Esclerosis Múltiple (REEM), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Universidad de Alcalá, Madrid, Spain
| | - Fernando Rodríguez-Jorge
- Department of Neurology, Hospital Universitario Ramón y Cajal, Red Española de Esclerosis Múltiple (REEM), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Universidad de Alcalá, Madrid, Spain
| | - Juan Luís Chico-García
- Department of Neurology, Hospital Universitario Ramón y Cajal, Red Española de Esclerosis Múltiple (REEM), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Universidad de Alcalá, Madrid, Spain
| | - Raquel Sainz-Amo
- Department of Neurology, Hospital Universitario Ramón y Cajal, Red Española de Esclerosis Múltiple (REEM), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Universidad de Alcalá, Madrid, Spain
| | - Jaime Masjuan
- Department of Neurology, Hospital Universitario Ramón y Cajal, Red Española de Esclerosis Múltiple (REEM), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Universidad de Alcalá, Madrid, Spain
| | - Lucienne Costa-Frossard
- Department of Neurology, Hospital Universitario Ramón y Cajal, Red Española de Esclerosis Múltiple (REEM), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Universidad de Alcalá, Madrid, Spain
| | - Luisa María Villar
- Department of Immunology, Hospital Universitario Ramón y Cajal, Red Española de Esclerosis Múltiple (REEM), Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Universidad de Alcalá, Madrid, Spain
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Monreal E, Fernández-Velasco JI, García-Sánchez MI, Sainz de la Maza S, Llufriu S, Álvarez-Lafuente R, Casanova B, Comabella M, Ramió-Torrentà L, Martínez-Rodríguez JE, Brieva L, Saiz A, Eichau S, Cabrera-Maqueda JM, Villarrubia N, Espiño M, Pérez-Miralles F, Montalbán X, Tintoré M, Quiroga-Varela A, Domínguez-Mozo MI, Rodríguez-Jorge F, Chico-García JL, Lourido D, Álvarez-Cermeño JC, Masjuan J, Costa-Frossard L, Villar LM. Association of Serum Neurofilament Light Chain Levels at Disease Onset With Disability Worsening in Patients With a First Demyelinating Multiple Sclerosis Event Not Treated With High-Efficacy Drugs. JAMA Neurol 2023; 80:397-403. [PMID: 36848127 PMCID: PMC9972238 DOI: 10.1001/jamaneurol.2023.0010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 12/23/2022] [Indexed: 03/01/2023]
Abstract
Importance The value of serum neurofilament light chain (sNfL) levels for predicting long-term disability in patients with multiple sclerosis (MS) remains controversial. Objective To assess whether high sNfL values are associated with disability worsening in patients who underwent their first demyelinating MS event. Design, Setting, and Participants This multicenter cohort study included patients who underwent their first demyelinating event suggestive of MS at Hospital Universitario Ramón y Cajal (development cohort; June 1, 1994, to September 31, 2021, with follow-up until August 31, 2022) and 8 Spanish hospitals (validation cohort; October 1, 1995, to August 4, 2020, with follow-up until August 16, 2022). Exposures Clinical evaluations at least every 6 months. Main Outcomes and Measures The main outcomes were 6-month confirmed disability worsening (CDW) and an Expanded Disability Status Scale (EDSS) score of 3. Levels of sNfL were measured in blood samples obtained within 12 months after disease onset using a single molecule array kit. The cutoffs used were sNfL level of 10 pg/mL and a standardized score (z score) of 1.5. Multivariable Cox proportional hazards regression models were used to evaluate outcomes. Results Of the 578 patients included in the study, 327 were in the development cohort (median age at sNfL analysis, 34.1 years [IQR, 27.2-42.7 years]; 226 female [69.1%]) and 251 patients were in the validation cohort (median age at sNfL analysis, 33.3 years [IQR, 27.4-41.5 years]; 184 female [73.3%]). The median follow-up was 7.10 years (IQR, 4.18-10.0 years). Levels of sNfL greater than 10 pg/mL were independently associated with higher risk of 6-month CDW and an EDSS of 3 in the development cohort (6-month CDW: hazard ratio [HR], 2.39; 95% CI, 1.39-4.12; P = .002; EDSS of 3: HR, 4.12; 95% CI, 2.18-7.77; P < .001) and the validation cohort (6-month CDW: HR, 1.61; 95% CI, 1.07-2.42; P = .02; EDSS of 3: HR, 2.03; 95% CI, 1.23-3.33; P = .005). Highly effective disease-modifying treatments were associated with lower risks of 6-month CDW and an EDSS of 3 in patients with high baseline sNfL values. Conclusions and Relevance This cohort study found that high sNfL values obtained within the first year of disease were associated with long-term disability worsening in MS, suggesting that sNfL level measurement may help identify optimal candidates for highly effective disease-modifying treatments.
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Affiliation(s)
- Enric Monreal
- Department of Neurology, Hospital Universitario Ramón y Cajal, La Red Española de Esclerosis Múltiple, Instituto Ramón y Cajal de Investigación Sanitaria, Universidad de Alcalá, Madrid, Spain
| | - José Ignacio Fernández-Velasco
- Department of Immunology, Hospital Universitario Ramón y Cajal, La Red Española de Esclerosis Múltiple, Instituto Ramón y Cajal de Investigación Sanitaria, Universidad de Alcalá, Madrid, Spain
| | - María Isabel García-Sánchez
- Nodo Biobanco Hospital Virgen Macarena (Biobanco del Sistema Sanitario Público de Andalucía), Hospital Universitario Virgen Macarena, Sevilla, Spain
| | - Susana Sainz de la Maza
- Department of Neurology, Hospital Universitario Ramón y Cajal, La Red Española de Esclerosis Múltiple, Instituto Ramón y Cajal de Investigación Sanitaria, Universidad de Alcalá, Madrid, Spain
| | - Sara Llufriu
- Center of Neuroimmunology, Laboratory of Advanced Imaging in Neuroimmunological Diseases, Hospital Clinic Barcelona, Institut d’Investigacions Biomèdiques August Pi i Sunyer and Universitat de Barcelona, Barcelona, Spain
| | - Roberto Álvarez-Lafuente
- Grupo Investigación de Factores Ambientales en Enfermedades Degenerativas, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, Madrid, Spain
| | - Bonaventura Casanova
- Multiple Sclerosis and Neuroimmunology Research Group, Fundación para la Investigación La Fe, Valencia, Spain
| | - Manuel Comabella
- Servei de Neurologia, Centre d’Esclerosi Múltiple de Catalunya, Institut de Recerca Vall d’Hebron, Hospital Universitari Vall d’Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Lluís Ramió-Torrentà
- Neuroimmunology and Multiple Sclerosis Unit, Department of Neurology, Doctor Josep Trueta University Hospital, Girona, Spain
- Neuroimmunology and Multiple Sclerosis Research Group, Girona Biomedical Research Institute, Doctor Josep Trueta University Hospital, Catalonia, Spain
- Department of Medical Sciences, School of Medicine, University of Girona, Girona, Spain
| | | | - Luis Brieva
- Hospital Arnau de Vilanova de Lleida, Universitat de Lleida Medicine Department, Institut de Recerca Biomèdica de Lleida, Lleida, Spain
| | - Albert Saiz
- Center of Neuroimmunology, Laboratory of Advanced Imaging in Neuroimmunological Diseases, Hospital Clinic Barcelona, Institut d’Investigacions Biomèdiques August Pi i Sunyer and Universitat de Barcelona, Barcelona, Spain
| | - Sara Eichau
- Multiple Sclerosis Unit, Hospital Virgen Macarena, Sevilla, Spain
| | - José María Cabrera-Maqueda
- Center of Neuroimmunology, Laboratory of Advanced Imaging in Neuroimmunological Diseases, Hospital Clinic Barcelona, Institut d’Investigacions Biomèdiques August Pi i Sunyer and Universitat de Barcelona, Barcelona, Spain
| | - Noelia Villarrubia
- Department of Immunology, Hospital Universitario Ramón y Cajal, La Red Española de Esclerosis Múltiple, Instituto Ramón y Cajal de Investigación Sanitaria, Universidad de Alcalá, Madrid, Spain
| | - Mercedes Espiño
- Department of Immunology, Hospital Universitario Ramón y Cajal, La Red Española de Esclerosis Múltiple, Instituto Ramón y Cajal de Investigación Sanitaria, Universidad de Alcalá, Madrid, Spain
| | - Francisco Pérez-Miralles
- Multiple Sclerosis and Neuroimmunology Research Group, Fundación para la Investigación La Fe, Valencia, Spain
| | - Xavier Montalbán
- Servei de Neurologia, Centre d’Esclerosi Múltiple de Catalunya, Institut de Recerca Vall d’Hebron, Hospital Universitari Vall d’Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Mar Tintoré
- Servei de Neurologia, Centre d’Esclerosi Múltiple de Catalunya, Institut de Recerca Vall d’Hebron, Hospital Universitari Vall d’Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Ana Quiroga-Varela
- Neuroimmunology and Multiple Sclerosis Unit, Department of Neurology, Doctor Josep Trueta University Hospital, Girona, Spain
- Neuroimmunology and Multiple Sclerosis Research Group, Girona Biomedical Research Institute, Doctor Josep Trueta University Hospital, Catalonia, Spain
- Department of Medical Sciences, School of Medicine, University of Girona, Girona, Spain
| | - María Inmaculada Domínguez-Mozo
- Grupo Investigación de Factores Ambientales en Enfermedades Degenerativas, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, Madrid, Spain
| | - Fernando Rodríguez-Jorge
- Department of Neurology, Hospital Universitario Ramón y Cajal, La Red Española de Esclerosis Múltiple, Instituto Ramón y Cajal de Investigación Sanitaria, Universidad de Alcalá, Madrid, Spain
| | - Juan Luís Chico-García
- Department of Neurology, Hospital Universitario Ramón y Cajal, La Red Española de Esclerosis Múltiple, Instituto Ramón y Cajal de Investigación Sanitaria, Universidad de Alcalá, Madrid, Spain
| | - Daniel Lourido
- Department of Radiology, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Universidad de Alcalá, Madrid, Spain
| | - José Carlos Álvarez-Cermeño
- Department of Neurology, Hospital Universitario Ramón y Cajal, La Red Española de Esclerosis Múltiple, Instituto Ramón y Cajal de Investigación Sanitaria, Universidad de Alcalá, Madrid, Spain
| | - Jaime Masjuan
- Department of Neurology, Hospital Universitario Ramón y Cajal, La Red Española de Esclerosis Múltiple, Instituto Ramón y Cajal de Investigación Sanitaria, Universidad de Alcalá, Madrid, Spain
| | - Lucienne Costa-Frossard
- Department of Neurology, Hospital Universitario Ramón y Cajal, La Red Española de Esclerosis Múltiple, Instituto Ramón y Cajal de Investigación Sanitaria, Universidad de Alcalá, Madrid, Spain
| | - Luisa María Villar
- Department of Immunology, Hospital Universitario Ramón y Cajal, La Red Española de Esclerosis Múltiple, Instituto Ramón y Cajal de Investigación Sanitaria, Universidad de Alcalá, Madrid, Spain
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Rodríguez-Jorge F, Beltrán-Corbellini Á, Chico-García JL, Parra-Díaz P, Baena-Álvarez B, Pagonabarraga J, Pérez-Torre P, Pareés I, López-Sendón JL, Martínez-Castrillo JC, Alonso-Cánovas A. Efficacy and safety of high doses of safinamide in advanced Parkinson disease. Parkinsonism Relat Disord 2022; 97:73-74. [PMID: 35344893 DOI: 10.1016/j.parkreldis.2022.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/04/2022] [Accepted: 03/13/2022] [Indexed: 10/18/2022]
Affiliation(s)
- Fernando Rodríguez-Jorge
- Movement Disorders Unit. Neurology Department, University Hospital Ramón y Cajal, Madrid, Spain.
| | | | - J L Chico-García
- Movement Disorders Unit. Neurology Department, University Hospital Ramón y Cajal, Madrid, Spain
| | - Paloma Parra-Díaz
- Movement Disorders Unit. Neurology Department, University Hospital Ramón y Cajal, Madrid, Spain
| | - Belén Baena-Álvarez
- Movement Disorders Unit. Neurology Department, University Hospital Ramón y Cajal, Madrid, Spain
| | - Javier Pagonabarraga
- Movement Disorders Unit. Neurology Department, University Hospital Santa Creu i Sant Pau, Barcelona, Spain
| | - Paula Pérez-Torre
- Movement Disorders Unit. Neurology Department, University Hospital Ramón y Cajal, Madrid, Spain
| | - Isabel Pareés
- Movement Disorders Unit. Neurology Department, University Hospital Ramón y Cajal, Madrid, Spain
| | - J L López-Sendón
- Movement Disorders Unit. Neurology Department, University Hospital Ramón y Cajal, Madrid, Spain
| | - J C Martínez-Castrillo
- Movement Disorders Unit. Neurology Department, University Hospital Ramón y Cajal, Madrid, Spain
| | - Araceli Alonso-Cánovas
- Movement Disorders Unit. Neurology Department, University Hospital Ramón y Cajal, Madrid, Spain
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Beltrán-Corbellini Á, Chico-García JL, Martínez-Poles J, Rodríguez-Jorge F, Natera-Villalba E, Gómez-Corral J, Gómez-López A, Monreal E, Parra-Díaz P, Cortés-Cuevas JL, Galán JC, Fragola-Arnau C, Porta-Etessam J, Masjuan J, Alonso-Cánovas A. Acute-onset smell and taste disorders in the context of COVID-19: a pilot multicentre polymerase chain reaction based case-control study. Eur J Neurol 2020; 27:1738-1741. [PMID: 32320508 PMCID: PMC7264557 DOI: 10.1111/ene.14273] [Citation(s) in RCA: 229] [Impact Index Per Article: 57.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 04/16/2020] [Indexed: 11/27/2022]
Abstract
Background and purpose Specific respiratory tract infections, including COVID‐19, may cause smell and/or taste disorders (STDs) with increased frequency. The aim was to determine whether new‐onset STDs are more frequent amongst COVID‐19 patients than influenza patients. Method This was a case–control study including hospitalized patients of two tertiary care centres. Consecutive patients positive for COVID‐19 polymerase chain reaction (cases) and patients positive for influenza polymerase chain reaction (historical control sample) were assessed during specific periods, employing a self‐reported STD questionnaire. Results Seventy‐nine cases and 40 controls were included. No significant differences were found in basal features between the two groups. New‐onset STDs were significantly more frequent amongst cases (31, 39.2%) than in the control group (5, 12.5 %) [adjusted odds ratio 21.4 (2.77–165.4, P = 0.003)]. COVID‐19 patients with new‐onset STDs were significantly younger than COVID‐19 patients without STDs (52.6 ± 17.2 vs. 67.4 ± 15.1, P < 0.001). Amongst COVID‐19 patients who presented STDs, 22 (70.9%) recalled an acute onset and it was an initial manifestation in 11 (35.5%). Twenty‐five (80.6%) presented smell disorders (mostly anosmia, 14, 45.2%) and 28 (90.3%) taste disorders (mostly ageusia, 14, 45.2%). Only four (12.9 %) reported concomitant nasal obstruction. The mean duration of STD was 7.5 ± 3.2 days and 12 patients (40%) manifested complete recovery after 7.4 ± 2.3 days of onset. Conclusion New‐onset STDs were significantly more frequent amongst COVID‐19 patients than influenza patients; they usually had an acute onset and were commonly an initial manifestation. The use of STD assessment in anamnesis as a hint for COVID‐19 and to support individuals’ self‐isolation in the current epidemic context is suggested.
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Affiliation(s)
| | - J L Chico-García
- Department of Neurology, University Hospital Ramón y Cajal, Madrid, Spain
| | - J Martínez-Poles
- Department of Neurology, Hospital La Luz, Madrid, Spain.,Neurological Disorders Study Group, Institute for Sanitary and Biomedical Research Clínico San Carlos (IdISSC), University Hospital Clínico San Carlos, Madrid, Spain
| | - F Rodríguez-Jorge
- Department of Neurology, University Hospital Ramón y Cajal, Madrid, Spain
| | - E Natera-Villalba
- Department of Neurology, University Hospital Ramón y Cajal, Madrid, Spain
| | - J Gómez-Corral
- Department of Neurology, University Hospital Ramón y Cajal, Madrid, Spain
| | - A Gómez-López
- Department of Neurology, University Hospital Ramón y Cajal, Madrid, Spain
| | - E Monreal
- Department of Neurology, University Hospital Ramón y Cajal, Madrid, Spain
| | - P Parra-Díaz
- Department of Neurology, University Hospital Ramón y Cajal, Madrid, Spain
| | - J L Cortés-Cuevas
- Department of Clinical Microbiology, University Hospital Ramón y Cajal, Madrid, Spain
| | - J C Galán
- Department of Clinical Microbiology, University Hospital Ramón y Cajal, Madrid, Spain
| | - C Fragola-Arnau
- Department of Otorhinolaryngology, University Hospital Ramón y Cajal, Madrid, Spain
| | - J Porta-Etessam
- Neurological Disorders Study Group, Institute for Sanitary and Biomedical Research Clínico San Carlos (IdISSC), University Hospital Clínico San Carlos, Madrid, Spain.,Department of Neurology, University Hospital Clínico San Carlos, Madrid, Spain
| | - J Masjuan
- Department of Neurology, University Hospital Ramón y Cajal, Madrid, Spain
| | - A Alonso-Cánovas
- Department of Neurology, University Hospital Ramón y Cajal, Madrid, Spain
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