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Malaquias MJ, Braz L, Santos Silva C, Damásio J, Jorge A, Lemos JM, Campos CF, Garcez D, Oliveira Santos M, Velon AG, Caetano A, Calejo M, Fernandes P, Rego Â, Castro S, Sousa AP, Cardoso MN, Fernandes M, Pinto MM, Taipa R, Lopes AM, Oliveira J, Magalhães M. Multisystemic RFC1-Related Disorder: Expanding the Phenotype Beyond Cerebellar Ataxia, Neuropathy, and Vestibular Areflexia Syndrome. Neurol Clin Pract 2023; 13:e200190. [PMID: 37674869 PMCID: PMC10479936 DOI: 10.1212/cpj.0000000000200190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 07/19/2023] [Indexed: 09/08/2023]
Abstract
Background and Objectives The RFC1 spectrum has become considerably expanded as multisystemic features beyond the triad of cerebellar ataxia, neuropathy, and vestibular areflexia syndrome (CANVAS) have started to be unveiled, although many still require clinical replication. Here, we aimed to clinically characterize a cohort of RFC1-positive patients by addressing both classic and multisystemic features. In a second part of this study, we prospectively assessed small nerve fibers (SNF) and autonomic function in a subset of these RFC1-related patients. Methods We retrospectively enrolled 67 RFC1-positive patients from multiple neurologic centers in Portugal. All patients underwent full neurologic and vestibular evaluation, as well as neuroimaging and neurophysiologic studies. For SNF and autonomic testing (n = 15), we performed skin biopsies, quantitative sensory testing, sudoscan, sympathetic skin response, heart rate deep breathing, and tilt test. Results Multisystemic features beyond CANVAS were present in 82% of the patients, mainly chronic cough (66%) and dysautonomia (43%). Other features included motor neuron (MN) affection and motor neuropathy (18%), hyperkinetic movement disorders (16%), sleep apnea (6%), REM and non-REM sleep disorders (5%), and cranial neuropathy (5%). Ten patients reported an inverse association between cough and ataxia severity. A very severe epidermal denervation was found in skin biopsies of all patients. Autonomic dysfunction comprised cardiovascular (67%), cardiovagal (54%), and/or sudomotor (50%) systems. Discussion The presence of MN involvement, motor neuropathy, small fiber neuropathy, or extrapyramidal signs should not preclude RFC1 testing in cases of sensory neuronopathy. Indeed, the RFC1 spectrum can overlap not only with multiple system atrophy but also with hereditary motor and sensory neuropathy, hereditary sensory and autonomic neuropathy, and feeding dystonia phenotypes. Some clinical-paraclinical dissociations can pose diagnostic challenges, namely large and small fiber neuropathy and sudomotor dysfunction which are usually subclinical.
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Affiliation(s)
- Maria João Malaquias
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Luis Braz
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Cláudia Santos Silva
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Joana Damásio
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - André Jorge
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - João M Lemos
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Catarina F Campos
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Daniela Garcez
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Miguel Oliveira Santos
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Ana G Velon
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - André Caetano
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Margarida Calejo
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Preza Fernandes
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Ângela Rego
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Sandra Castro
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Ana P Sousa
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Marcio Neves Cardoso
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Marco Fernandes
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Miguel M Pinto
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Ricardo Taipa
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Ana M Lopes
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Jorge Oliveira
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Marina Magalhães
- Department of Neurology (MJM, LB), Centro Hospitalar Universitário de São João, Porto; Department of Neurology (CSS, CFC, MOS), Centro Hospitalar Universitário Lisboa Norte; Centro de Estudos Egas Moniz (CSS), Faculdade de Medicina da Universidade de Lisboa; Department of Neurology (JD, MCM), Centro Hospitalar Universitário do Porto; Department of Neurology (AJ, JML), Centro Hospitalar Universitário de Coimbra; Department of Neurology (DG), Instituto Português de Oncologia de Lisboa Francisco Gentil; Department of Neurology (AGV), Centro Hospitalar De Trás-Os-Montes e Alto Douro, Vila Real; Department of Neurology (AC, MF), Centro Hospitalar de Lisboa Ocidental; Department of Neurology (MC), Unidade Local de Saúde de Matosinhos, Porto; Department of Cardiology (PF), Centro Hospitalar Universitário Lisboa Central; Department of Otolaryngology, Head and Neck Surgery (ÂR, SC); Department of Neurophysiology (APS, MNC); Neuropathology Unit (MMP, RT), Centro Hospitalar Universitário do Porto; Center for Predictive and Preventive Genetics (CGPP) (AML, JO), Institute for Molecular and Cell Biology (IBMC), Instituto de Investigacão e Inovação em Saúde (i3S), Universidade do Porto; and Department of Neurology (MCM), Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
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