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1. Factors associated with the severity of COVID-19 outcomes in people with neuromuscular diseases: Data from the International Neuromuscular COVID-19 Registry

Author

Pizzamiglio, C., Pitceathly, R.D.S., Lunn, M.P., Brady, S., Marchi, F. De, Galan, L., Heckmann, J.M., Horga, A., Molnar, M.J., Oliveira, A.S.B., Pinto, W., Primiano, G., Santos, E., Schoser, B., Servidei, S., Souza, P.V. Sgobbi, Venugopalan, V., Hanna, M.G., Groothuis, J.T., Janssen, M.C.H., Dimachkie, M.M., Machado, P.M., Pizzamiglio, C., Pitceathly, R.D.S., Lunn, M.P., Brady, S., Marchi, F. De, Galan, L., Heckmann, J.M., Horga, A., Molnar, M.J., Oliveira, A.S.B., Pinto, W., Primiano, G., Santos, E., Schoser, B., Servidei, S., Souza, P.V. Sgobbi, Venugopalan, V., Hanna, M.G., Groothuis, J.T., Janssen, M.C.H., Dimachkie, M.M., and Machado, P.M.

Abstract

Item does not contain fulltext, BACKGROUND AND PURPOSE: Clinical outcome information on patients with neuromuscular diseases (NMDs) who have been infected with SARS-CoV-2 is limited. The aim of this study was to determine factors associated with the severity of COVID-19 outcomes in people with NMDs. METHODS: Cases of NMD, of any age, and confirmed/presumptive COVID-19, submitted to the International Neuromuscular COVID-19 Registry up to 31 December 2021, were included. A mutually exclusive ordinal COVID-19 severity scale was defined as follows: (1) no hospitalization; (2) hospitalization without oxygenation; (3) hospitalization with ventilation/oxygenation; and (4) death. Multivariable ordinal logistic regression analyses were used to estimate odds ratios (ORs) for severe outcome, adjusting for age, sex, race/ethnicity, NMD, comorbidities, baseline functional status (modified Rankin scale [mRS]), use of immunosuppressive/immunomodulatory medication, and pandemic calendar period. RESULTS: Of 315 patients from 13 countries (mean age 50.3 [±17.7] years, 154 [48.9%] female), 175 (55.5%) were not hospitalized, 27 (8.6%) were hospitalized without supplemental oxygen, 91 (28.9%) were hospitalized with ventilation/supplemental oxygen, and 22 (7%) died. Higher odds of severe COVID-19 outcomes were observed for: age ≥50 years (50-64 years: OR 2.4, 95% confidence interval [CI] 1.33-4.31; >64 years: OR 4.16, 95% CI 2.12-8.15; both vs. <50 years); non-White race/ethnicity (OR 1.81, 95% CI 1.07-3.06; vs. White); mRS moderately severe/severe disability (OR 3.02, 95% CI 1.6-5.69; vs. no/slight/moderate disability); history of respiratory dysfunction (OR 3.16, 95% CI 1.79-5.58); obesity (OR 2.24, 95% CI 1.18-4.25); ≥3 comorbidities (OR 3.2, 95% CI 1.76-5.83; vs. ≤2; if comorbidity count used instead of specific comorbidities); glucocorticoid treatment (OR 2.33, 95% CI 1.14-4.78); and Guillain-Barré syndrome (OR 3.1, 95% CI 1.35-7.13; vs. mitochondrial disease). CONCLUSIONS: Among people with NMDs, there is a diffe

Published
2023

2. Predicting Outcome in Guillain-Barre Syndrome International Validation of the Modified Erasmus GBS Outcome Score

Author

Doets, A.Y., Lingsma, H.F., Walgaard, C., Islam, B., Papri, N., Davidson, A., Yamagishi, Y., Kusunoki, S., Dimachkie, M.M., Waheed, W., Kolb, N., Islam, Z., Mohammad, Q.D., Harbo, T., Sindrup, S.H., Chavada, G., Willison, H.J., Casasnovas, C., Bateman, K., Miller, J.A.L., Berg, B. van den, Verboon, C., Roodbol, J., Leonhard, S.E., Benedetti, L., Kuwabara, S., Bergh, P. van den, Monges, S., Marfia, G.A., Shahrizaila, N., Galassi, G., Pereon, Y., Burmann, J., Kuitwaard, K., Kleyweg, R.P., Marchesoni, C., Tous, M.J.S., Querol, L., Illa, I., Wang, Y.Z., Nobile-Orazio, E., Rinaldi, S., Schenone, A., Pardo, J., Vermeij, F.H., Lehmann, H.C., Granit, V., Cavaletti, G., Gutierrez-Gutierrez, G., Barroso, F.A., Visser, L.H., Katzberg, H.D., Dardiotis, E., Attarian, S., Kooi, A.J. van der, Eftimov, F., Wirtz, P.W., Samijn, J.P.A., Gilhuis, H.J., Hadden, R.D.M., Holt, J.K.L., Sheikh, K.A., Karafiath, S., Vytopil, M., Antonini, G., Feasby, T.E., Faber, C.G., Gijsbers, C.J., Busby, M., Roberts, R.C., Silvestri, N.J., Fazio, R., Dijk, G.W. van, Garssen, M.P.J., Straathof, C.S.M., Gorson, K.C., Jacobs, B.C., IGOS Consortium, Neurology, ANS - Neuroinfection & -inflammation, EURO-NMD, Klinische Neurowetenschappen, MUMC+: MA Med Staf Spec Neurologie (9), RS: MHeNs - R1 - Cognitive Neuropsychiatry and Clinical Neuroscience, Doets, A, Lingsma, H, Walgaard, C, Islam, B, Papri, N, Davidson, A, Yamagishi, Y, Kusunoki, S, Dimachkie, M, Waheed, W, Kolb, N, Islam, Z, Mohammad, Q, Harbo, T, Sindrup, S, Chavada, G, Willison, H, Casasnovas, C, Bateman, K, Miller, J, van den Berg, B, Verboon, C, Roodbol, J, Leonhard, S, Benedetti, L, Kuwabara, S, Van den Bergh, P, Monges, S, Marfia, G, Shahrizaila, N, Galassi, G, Péréon, Y, Bürmann, J, Kuitwaard, K, Kleyweg, R, Marchesoni, C, Sedano Tous, M, Querol, L, Illa, I, Wang, Y, Nobile-Orazio, E, Rinaldi, S, Schenone, A, Pardo, J, Vermeij, F, Lehmann, H, Granit, V, Cavaletti, G, Gutiérrez-Gutiérrez, G, Barroso, F, Visser, L, Katzberg, H, Dardiotis, E, Attarian, S, van der Kooi, A, Eftimov, F, Wirtz, P, Samijn, J, Gilhuis, H, Hadden, R, Holt, J, Sheikh, K, Karafiath, S, Vytopil, M, Antonini, G, Feasby, T, Faber, C, Gijsbers, C, Busby, M, Roberts, R, Silvestri, N, Fazio, R, van Dijk, G, Garssen, M, Straathof, C, Gorson, K, Jacobs, B, Public Health, and Immunology

Subjects
Guillain-Barrè, predicting, outcome, IGOS, MODELS, Guillain-Barre Syndrome, Prognosis, Settore MED/26, Cohort Studies, POOR-PROGNOSIS, Outcome Assessment, Health Care, Humans, INTRAVENOUS IMMUNOGLOBULIN, Neurology (clinical), Prospective Studies, Child, Research Article
Abstract

Background and ObjectivesThe clinical course and outcome of the Guillain-Barré syndrome (GBS) are diverse and vary among regions. The modified Erasmus GBS Outcome Score (mEGOS), developed with data from Dutch patients, is a clinical model that predicts the risk of walking inability in patients with GBS. The study objective was to validate the mEGOS in the International GBS Outcome Study (IGOS) cohort and to improve its performance and region specificity.MethodsWe used prospective data from the first 1,500 patients included in IGOS, aged ≥6 years and unable to walk independently. We evaluated whether the mEGOS at entry and week 1 could predict the inability to walk unaided at 4 and 26 weeks in the full cohort and in regional subgroups, using 2 measures for model performance: (1) discrimination: area under the receiver operating characteristic curve (AUC) and (2) calibration: observed vs predicted probability of being unable to walk independently. To improve the model predictions, we recalibrated the model containing the overall mEGOS score, without changing the individual predictive factors. Finally, we assessed the predictive ability of the individual factors.ResultsFor validation of mEGOS at entry, 809 patients were eligible (Europe/North America [n = 677], Asia [n = 76], other [n = 56]), and 671 for validation of mEGOS at week 1 (Europe/North America [n = 563], Asia [n = 65], other [n = 43]). AUC values were >0.7 in all regional subgroups. In the Europe/North America subgroup, observed outcomes were worse than predicted; in Asia, observed outcomes were better than predicted. Recalibration improved model accuracy and enabled the development of a region-specific version for Europe/North America (mEGOS-Eu/NA). Similar to the original mEGOS, severe limb weakness and higher age were the predominant predictors of poor outcome in the IGOS cohort.DiscussionmEGOS is a validated tool to predict the inability to walk unaided at 4 and 26 weeks in patients with GBS, also in countries outside the Netherlands. We developed a region-specific version of mEGOS for patients from Europe/North America.Classification of EvidenceThis study provides Class II evidence that the mEGOS accurately predicts the inability to walk unaided at 4 and 26 weeks in patients with GBS.Trial Registration InformationNCT01582763.

Published
2022
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3. Efficacy and safety of Bimagrumab in sporadic inclusion body myositis

Author

Amato, A.A., Hanna, M.G., Machado, P.M., Badrising, U.A., Chinoy, H., Benveniste, O., Karanam, A.K., Wu, M., Tankó, L.B., Schubert-Tennigkeit, A.A., Papanicolaou, D.A., Lloyd, T.E., Needham, M., Liang, C., Reardon, K.A., de Visser, M., Ascherman, D.P., Barohn, R.J., Dimachkie, M.M., Miller, J.A.L., Kissel, J.T., Oskarsson, B., Joyce, N.C., Van den Bergh, P., Baets, J., De Bleecker, J.L., Karam, C., David, W.S., Mirabella, M., Nations, S.P., Jung, H.H., Pegoraro, E., Maggi, L., Rodolico, C., Filosto, M., Shaibani, A.I., Sivakumar, K., Goyal, N.A., Mori-Yoshimura, M., Yamashita, S., Suzuki, N., Aoki, M., Katsuno, M., Morihata, H., Murata, K., Nodera, H., Nishino, I., Romano, C.D., Williams, V.S.L., Vissing, J., Zhang Auberson, L., Amato, A.A., Hanna, M.G., Machado, P.M., Badrising, U.A., Chinoy, H., Benveniste, O., Karanam, A.K., Wu, M., Tankó, L.B., Schubert-Tennigkeit, A.A., Papanicolaou, D.A., Lloyd, T.E., Needham, M., Liang, C., Reardon, K.A., de Visser, M., Ascherman, D.P., Barohn, R.J., Dimachkie, M.M., Miller, J.A.L., Kissel, J.T., Oskarsson, B., Joyce, N.C., Van den Bergh, P., Baets, J., De Bleecker, J.L., Karam, C., David, W.S., Mirabella, M., Nations, S.P., Jung, H.H., Pegoraro, E., Maggi, L., Rodolico, C., Filosto, M., Shaibani, A.I., Sivakumar, K., Goyal, N.A., Mori-Yoshimura, M., Yamashita, S., Suzuki, N., Aoki, M., Katsuno, M., Morihata, H., Murata, K., Nodera, H., Nishino, I., Romano, C.D., Williams, V.S.L., Vissing, J., and Zhang Auberson, L.

Abstract

Objective To assess long-term (2 years) effects of bimagrumab in participants with sporadic inclusion body myositis (sIBM). Methods Participants (aged 36–85 years) who completed the core study (RESILIENT [Efficacy and Safety of Bimagrumab/BYM338 at 52 Weeks on Physical Function, Muscle Strength, Mobility in sIBM Patients]) were invited to join an extension study. Individuals continued on the same treatment as in the core study (10 mg/kg, 3 mg/kg, 1 mg/kg bimagrumab or matching placebo administered as IV infusions every 4 weeks). The co–primary outcome measures were 6-minute walk distance (6MWD) and safety. Results Between November 2015 and February 2017, 211 participants entered double-blind placebo-controlled period of the extension study. Mean change in 6MWD from baseline was highly variable across treatment groups, but indicated progressive deterioration from weeks 24–104 in all treatment groups. Overall, 91.0% (n = 142) of participants in the pooled bimagrumab group and 89.1% (n = 49) in the placebo group had ≥1 treatment-emergent adverse event (AE). Falls were slightly higher in the bimagrumab 3 mg/kg group vs 10 mg/kg, 1 mg/kg, and placebo groups (69.2% [n = 36 of 52] vs 56.6% [n = 30 of 53], 58.8% [n = 30 of 51], and 61.8% [n = 34 of 55], respectively). The most frequently reported AEs in the pooled bimagrumab group were diarrhea 14.7% (n = 23), involuntary muscle contractions 9.6% (n = 15), and rash 5.1% (n = 8). Incidence of serious AEs was comparable between the pooled bimagrumab and the placebo group (18.6% [n = 29] vs 14.5% [n = 8], respectively). Conclusion Extended treatment with bimagrumab up to 2 years produced a good safety profile and was well-tolerated, but did not provide clinical benefits in terms of improvement in mobility. The extension study was terminated early due to core study not meeting its primary endpoint.

Published
2021

4. Safety and efficacy of intravenous bimagrumab in inclusion body myositis (RESILIENT): a randomised, double-blind, placebo-controlled phase 2b trial

Author

Hanna, M.G., Badrising, U.A., Benveniste, O., Lloyd, T.E., Needham, M., Chinoy, H., Aoki, M., Machado, P.M., Liang, C., Reardon, K.A., Visser, M. de, Ascherman, D.P., Barohn, R.J., Dimachkie, M.M., Miller, J.A.L., Kissel, J.T., Oskarsson, B., Joyce, N.C., Bergh, P. van den, Baets, J., Bleecker, J.L. de, Karam, C., David, W.S., Mirabella, M., Nations, S.P., Jung, H.H., Pegoraro, E., Maggi, L., Rodolico, C., Filosto, M., Shaibani, A.I., Sivakumar, K., Goyal, N.A., Mori-Yoshimura, M., Yamashita, S., Suzuki, N., Katsuno, M., Murata, K., Nodera, H., Romano, C.D., Williams, V.S.L., Vissing, J., Auberson, L.Z., Wu, M., Vera, A. de, Papanicolaou, D.A., Amato, A.A., Nishino, I., RESILIENT Study Grp, Neurology, ANS - Neuroinfection & -inflammation, UCL - SSS/IONS/NEUR - Clinical Neuroscience, UCL - (SLuc) Service de neurologie, and RESILIENT Study Grp

Subjects
Adult, Male, 0301 basic medicine, medicine.medical_specialty, Myostatin, Guidelines, Population, Guidelines, Antibodies, Monoclonal, Humanized, Placebo, Myositis, Inclusion Body, law.invention, 03 medical and health sciences, 0302 clinical medicine, Double-Blind Method, Randomized controlled trial, law, Internal medicine, medicine, Humans, education, Adverse effect, Bimagrumab, Aged, Aged, 80 and over, education.field_of_study, business.industry, Repeated measures design, Middle Aged, Myostatin, Settore MED/26 - NEUROLOGIA, Treatment Outcome, 030104 developmental biology, Blood chemistry, Tolerability, Female, Human medicine, Neurology (clinical), business, 030217 neurology & neurosurgery
Abstract

Background Inclusion body myositis is an idiopathic inflammatory myopathy and the most common myopathy affecting people older than 50 years. To date, there are no effective drug treatments. We aimed to assess the safety, efficacy, and tolerability of bimagrumab-a fully human monoclonal antibody-in individuals with inclusion body myositis. Methods We did a multicentre, double-blind, placebo-controlled study (RESILIENT) at 38 academic clinical sites in Australia, Europe, Japan, and the USA. Individuals (aged 3685 years) were eligible for the study if they met modified 2010 Medical Research Council criteria for inclusion body myositis. We randomly assigned participants (1:1:1:1) using a blocked randomisation schedule (block size of four) to either bimagrumab (10 mg/kg, 3 mg/kg, or 1 mg/kg) or placebo matched in appearance to bimagrumab, administered as intravenous infusions every 4 weeks for at least 48 weeks. All study participants, the funder, investigators, site personnel, and people doing assessments were masked to treatment assignment. The primary outcome measure was 6-min walking distance (6MWD), which was assessed at week 52 in the primary analysis population and analysed by intention-to-treat principles. We used a multivariate normal repeated measures model to analyse data for 6MWD. Safety was assessed by recording adverse events and by electrocardiography, echocardiography, haematological testing, urinalysis, and blood chemistry. This trial is registered with ClinicalTrials.gov, number NCT01925209; this report represents the final analysis. Findings Between Sept 26, 2013, and Jan 6, 2016, 251 participants were enrolled to the study, of whom 63 were assigned to each bimagrumab group and 62 were allocated to the placebo group. At week 52, 6MWD change from baseline did not differ between any bimagrumab dose and placebo (least squares mean treatment difference for bimagrumab 10 mg/kg group, 17.6 m, SE 14.3, 99% CI -19.6 to 54.8; p=0.22; for 3 mg/kg group, 18.6 m, 14.2, -18.2 to 55.4; p=0.19; and for 1 mg/kg group, 1.3 m, 14.1, -38.0 to 35.4; p=0.93). 63 (100%) participants in each bimagrumab group and 61 (98%) of 62 in the placebo group had at least one adverse event. Falls were the most frequent adverse event (48 [76%] in the bimagrumab 10 mg/kg group, 55 [87%] in the 3 mg/kg group, 54 [86%] in the 1 mg/kg group, and 52 [84%] in the placebo group). The most frequently reported adverse events with bimagrumab were muscle spasms (32 [51%] in the bimagrumab 10 mg/kg group, 43 [68%] in the 3 mg/kg group, 25 [40%] in the 1 mg/kg group, and 13 [21%] in the placebo group) and diarrhoea (33 [52%], 28 [44%], 20 [32%], and 11 [18%], respectively). Adverse events leading to discontinuation were reported in four (6%) participants in each bimagrumab group compared with one (2%) participant in the placebo group. At least one serious adverse event was reported by 21 (33%) participants in the 10 mg/kg group, 11 (17%) in the 3 mg/kg group, 20 (32%) in the 1 mg/kg group, and 20 (32%) in the placebo group. No significant adverse cardiac effects were recorded on electrocardiography or echocardiography. Two deaths were reported during the study, one attributable to subendocardial myocardial infarction (secondary to gastrointestinal bleeding after an intentional overdose of concomitant sedatives and antidepressants) and one attributable to lung adenocarcinoma. Neither death was considered by the investigator to be related to bimagrumab. Interpretation Bimagrumab showed a good safety profile, relative to placebo, in individuals with inclusion body myositis but did not improve 6MWD. The strengths of our study are that, to the best of our knowledge, it is the largest randomised controlled trial done in people with inclusion body myositis, and it provides important natural history data over 12 months. Copyright (C) 2019 Elsevier Ltd. All rights reserved.

Published
2019
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5. International Guillain-Barré Syndrome Outcome Study: protocol of a prospective observational cohort study on clinical and biological predictors of disease course and outcome in Guillain-Barré syndrome

Author

Jacobs, B.C. (Bart C.), Berg, B. (Bianca) van den, Verboon, C. (Christine), Chavada, G. (Govindsinh), Cornblath, D.R. (David), Gorson, K.C. (Kenneth), Harbo, T. (Thomas), Hartung, H.P., Hughes, R.A.C. (Richard A. C.), Kusunoki, S. (Susumu), Doorn, P.A. (Pieter) van, Willison, H.J. (Hugh J.), Jacobs, B.C. (Bart), Hughes, R.A.C. (Richard), Cornblath, D.R., Gorson, K.C., Kusunoki, S., Willison, H.J. (Hugh), van Woerkom, M., van den Berg, B., Verboon, C., Roodbol, J. (J.), Reisin, R. (R.), Reddel, S.W., Islam, Z. (Zhahirul), Islam, B., Mohammad, Q.D. (Quazi), Bergh, P.Y.K. (Paul) van den, Feasby, T.E., Wang, Y.Z., Harbo, T., Péréon, Y., Lehmann, H.C., Dardiotis, E., Nobile-Orazio, E. (Eduarde), Shahrizaila, N., Jacobs, B.C., Bateman, K., Illa, I. (Isabel), Querol, L. (Luis), Hsieh, S.T., Willison, H.J., Chavada, G., Davidson, A., Addington, J.M., Ajroud-Driss, S., Andersen, H., Antonini, G., Attarian, S., Badrising, U.A. (Umesh), Barroso, F.A., Benedetti, L., Beronio, A., Bianco, M., Binda, D., Briani, C., Bürmann, J., Bella, I.R., Bertorini, T.E., Bhavaraju-Sanka, R., Brannagan, T.H., Busby, M., Butterworth, S., Campagnolo, M., Casasnovas, C., Cavaletti, G., Chao, C.S., Chen, S., Chetty, S., Claeys, T. (Tine), Cohen, J.A., Conti, M.E., Cosgrove, J.S., Dalakas, M.C. (Marinos), Dimachkie, M.M., Dillmann, U., Domínguez González, C., Doppler, K., Dornonville de la Cour, C., Echaniz-Laguna, A., Eftimov, F. (Filip), Faber, C.G., Fazio, R. (R.), Fokke, M. (Maureen), Fujioka, T., Fulgenzi, E. (E.), Galassi, G., Garcia, T., Garnero, M., Garssen, M.P.J. (Marcel), Gijsbers, C.J., Gilchrist, J.M., Gilhuis, J. (Job), Goldstein, J.M., Goyal, N., Granit, V., Grapperon, A., Gutiérrez Gutiérrez, G., Gutmann, L., Hadden, R.D.M. (Rob), Holbech, J.V., Holt, J.K.L., Homedes Pedret, C., Htut, M., Jellema, K., Jericó Pascual, I., Kaida, K.I. (Ken Ichi), Karafiath, S., Katzberg, H. (Hans), Kiers, H.A.L. (Henk), Kieseier, B.C. (Bernd), Kimpinski, K., Kleyweg, R.P., Kokubun, N., Kolb, N.A., Kuitwaard, K. (Krista), Kuwabara, S., Kwan, J.Y., Ladha, S.S., Landschoff Lassen, L., Lawson, V., Ledingham, D., Léon Cejas, L., Luciano, C.A., Lucy, S.T., Lunn, M.P.T. (Michael P. T.), Magot, A., Manji, H., Marchesoni, A., Marfia, G.A.M., Márquez Infante, C., Martinez Hernandez, E., Mataluni, G., Mattiazi, M., McDermott, C.J., Meekins, G.D., Miller, J., Monges, M.S., Montero, M.C.J., Morís de la Tassa, G., Nascimbene, C., Neumann, C., Nowak, R.J., Orizaola Balaguer, P., Osei-Bonsu, M., Pan, E.B.L., Pardo Fernandez, J., Pasnoor, M., Pulley, M.T., Rajabally, Y.A., Rinaldi, S. (Sabina), Ritter, C., Roberts, R.C., Rojas-Marcos, I., Rudnicki, S.A., Sachs, G.M., Samijn, J.P. (Johnny), Santoro, L., Saperstein, D.S., Savransky, A., Schneider, H., Schenone, A. (Andrea), Sedano Tous, M.J., Sekiguchi, Y., Sheikh, K.A., Silvestri, N.J., Sindrup, S.H., Sommer, C., Stein, B., Stino, A.M., Spyropoulos, A., Srinivasan, J., Suzuki, H., Taylor, S.W., Tankisi, H., Tigner, D., Twydell, P.T., Valzania, F., van Damme, P., Kooj, A.J. (Anneke), Dijk, G.W. (Gert) van, van der Ree, T., Koningsveld, R. (Rinske) van, Varrato, J.D., Vermeij, F.H. (Frederique), Verschuuren, J.J. (Jan), Visser, L.H. (Leendert), Vytopil, M.V., Waheed, W., Wilken, M., Wilkerson, C., Wirtz, P.W., Yamagishi, Y., Yiu, E.M., Zhou, L., Zivkovic, S.A. (Sasa), Jacobs, B.C. (Bart C.), Berg, B. (Bianca) van den, Verboon, C. (Christine), Chavada, G. (Govindsinh), Cornblath, D.R. (David), Gorson, K.C. (Kenneth), Harbo, T. (Thomas), Hartung, H.P., Hughes, R.A.C. (Richard A. C.), Kusunoki, S. (Susumu), Doorn, P.A. (Pieter) van, Willison, H.J. (Hugh J.), Jacobs, B.C. (Bart), Hughes, R.A.C. (Richard), Cornblath, D.R., Gorson, K.C., Kusunoki, S., Willison, H.J. (Hugh), van Woerkom, M., van den Berg, B., Verboon, C., Roodbol, J. (J.), Reisin, R. (R.), Reddel, S.W., Islam, Z. (Zhahirul), Islam, B., Mohammad, Q.D. (Quazi), Bergh, P.Y.K. (Paul) van den, Feasby, T.E., Wang, Y.Z., Harbo, T., Péréon, Y., Lehmann, H.C., Dardiotis, E., Nobile-Orazio, E. (Eduarde), Shahrizaila, N., Jacobs, B.C., Bateman, K., Illa, I. (Isabel), Querol, L. (Luis), Hsieh, S.T., Willison, H.J., Chavada, G., Davidson, A., Addington, J.M., Ajroud-Driss, S., Andersen, H., Antonini, G., Attarian, S., Badrising, U.A. (Umesh), Barroso, F.A., Benedetti, L., Beronio, A., Bianco, M., Binda, D., Briani, C., Bürmann, J., Bella, I.R., Bertorini, T.E., Bhavaraju-Sanka, R., Brannagan, T.H., Busby, M., Butterworth, S., Campagnolo, M., Casasnovas, C., Cavaletti, G., Chao, C.S., Chen, S., Chetty, S., Claeys, T. (Tine), Cohen, J.A., Conti, M.E., Cosgrove, J.S., Dalakas, M.C. (Marinos), Dimachkie, M.M., Dillmann, U., Domínguez González, C., Doppler, K., Dornonville de la Cour, C., Echaniz-Laguna, A., Eftimov, F. (Filip), Faber, C.G., Fazio, R. (R.), Fokke, M. (Maureen), Fujioka, T., Fulgenzi, E. (E.), Galassi, G., Garcia, T., Garnero, M., Garssen, M.P.J. (Marcel), Gijsbers, C.J., Gilchrist, J.M., Gilhuis, J. (Job), Goldstein, J.M., Goyal, N., Granit, V., Grapperon, A., Gutiérrez Gutiérrez, G., Gutmann, L., Hadden, R.D.M. (Rob), Holbech, J.V., Holt, J.K.L., Homedes Pedret, C., Htut, M., Jellema, K., Jericó Pascual, I., Kaida, K.I. (Ken Ichi), Karafiath, S., Katzberg, H. (Hans), Kiers, H.A.L. (Henk), Kieseier, B.C. (Bernd), Kimpinski, K., Kleyweg, R.P., Kokubun, N., Kolb, N.A., Kuitwaard, K. (Krista), Kuwabara, S., Kwan, J.Y., Ladha, S.S., Landschoff Lassen, L., Lawson, V., Ledingham, D., Léon Cejas, L., Luciano, C.A., Lucy, S.T., Lunn, M.P.T. (Michael P. T.), Magot, A., Manji, H., Marchesoni, A., Marfia, G.A.M., Márquez Infante, C., Martinez Hernandez, E., Mataluni, G., Mattiazi, M., McDermott, C.J., Meekins, G.D., Miller, J., Monges, M.S., Montero, M.C.J., Morís de la Tassa, G., Nascimbene, C., Neumann, C., Nowak, R.J., Orizaola Balaguer, P., Osei-Bonsu, M., Pan, E.B.L., Pardo Fernandez, J., Pasnoor, M., Pulley, M.T., Rajabally, Y.A., Rinaldi, S. (Sabina), Ritter, C., Roberts, R.C., Rojas-Marcos, I., Rudnicki, S.A., Sachs, G.M., Samijn, J.P. (Johnny), Santoro, L., Saperstein, D.S., Savransky, A., Schneider, H., Schenone, A. (Andrea), Sedano Tous, M.J., Sekiguchi, Y., Sheikh, K.A., Silvestri, N.J., Sindrup, S.H., Sommer, C., Stein, B., Stino, A.M., Spyropoulos, A., Srinivasan, J., Suzuki, H., Taylor, S.W., Tankisi, H., Tigner, D., Twydell, P.T., Valzania, F., van Damme, P., Kooj, A.J. (Anneke), Dijk, G.W. (Gert) van, van der Ree, T., Koningsveld, R. (Rinske) van, Varrato, J.D., Vermeij, F.H. (Frederique), Verschuuren, J.J. (Jan), Visser, L.H. (Leendert), Vytopil, M.V., Waheed, W., Wilken, M., Wilkerson, C., Wirtz, P.W., Yamagishi, Y., Yiu, E.M., Zhou, L., and Zivkovic, S.A. (Sasa)

Abstract

Guillain-Barré syndrome (GBS) is an acute polyradiculoneuropathy with a highly variable clinical presentation, course, and outcome. The factors that determine the clinical variation of GBS are poorly understood which complicates the care and treatment of individual patients. The protocol of the ongoing International GBS Outcome Study (IGOS), a prospective, observational, multicenter cohort study that aims to identify the clinical and biological determinants and predictors of disease onset, subtype, course and outcome of GBS is presented here. Patients fulfilling the diagnostic criteria for GBS, regardless of age, disease severity, variant forms, or treatment, can participate if included within 2 weeks after onset of weakness. Information about demography, preceding infections, clinical features, diagnostic findings, treatment, course, and outcome is collected. In addition, cerebrospinal fluid and serial blood samples for serum and DNA is collected at standard time points. The original aim was to include at least 1,000 patients with a follow-up of 1–3 years. Data are collected via a web-based data entry system and stored anonymously. IGOS started in May 2012 and by January 2017 included more than 1,400 participants from 143 active centers in 19 countries across 5 continents. The IGOS data/biobank is available for research projects conducted by expertise groups focusing on specific topics including epidemiology, diagnostic criteria, clinimetrics, electrophysiology, antecedent events, antibodies, genetics, prognostic modeling, treatment effects, and long-term outcome of GBS. The IGOS will help to standardize the international collection of data and biosamples for future research of GBS.

Published
2017
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6. Prospective exploratory muscle biopsy, imaging, and functional assessment in patients with late-onset Pompe disease treated with alglucosidase alfa: The EMBASSY Study

Author

Ploeg, A.T. (Ans) van der, Carlier, P.G. (Pierre G.), Carlier, R.-Y. (Robert-Yves), Kissel, J.T. (John T.), Schoser, B., Wenninger, S. (Stephan), Pestronk, A. (Alan), Barohn, R.J. (Richard J.), Dimachkie, M.M. (Mazen M.), Goker-Alpan, O. (Ozlem), Mozaffar, T. (Tahseen), Pena, L.D.M. (Loren D.M.), Simmons, Z. (Zachary), Straub, V., Guglieri, M. (Michela), Young, P. (Peter), Boentert, M. (Matthias), Baudin, P.-Y. (Pierre-Yves), Wens, S.C.A. (Stephan), Shafi, R. (Raheel), Bjartmar, C. (Carl), Thurberg, B., Ploeg, A.T. (Ans) van der, Carlier, P.G. (Pierre G.), Carlier, R.-Y. (Robert-Yves), Kissel, J.T. (John T.), Schoser, B., Wenninger, S. (Stephan), Pestronk, A. (Alan), Barohn, R.J. (Richard J.), Dimachkie, M.M. (Mazen M.), Goker-Alpan, O. (Ozlem), Mozaffar, T. (Tahseen), Pena, L.D.M. (Loren D.M.), Simmons, Z. (Zachary), Straub, V., Guglieri, M. (Michela), Young, P. (Peter), Boentert, M. (Matthias), Baudin, P.-Y. (Pierre-Yves), Wens, S.C.A. (Stephan), Shafi, R. (Raheel), Bjartmar, C. (Carl), and Thurberg, B.

Abstract

Background Late-onset Pompe disease is characterized by progressive skeletal myopathy followed by respiratory muscle weakness, typically leading to loss of ambulation and respiratory failure. In this population, enzyme replacement therapy (ERT) with alglucosidase alfa has been shown to stabilize respiratory function and improve mobility and muscle strength. Muscle pathology and glycogen clearance from skeletal muscle in treatment-naïve adults after ERT have not been extensively examined. Methods This exploratory, open-label, multicenter study evaluated glycogen clearance in muscle tissue samples collected pre- and post- alglucosidase alfa treatment in treatment-naïve adults with late-onset Pompe disease. The primary endpoint was the quantitative reduction in percent tissue area occupied by glycogen in muscle biopsies from baseline to 6 months. Secondary endpoints included qualitative histologic assessment of tissue glycogen distribution, secondary pathology changes, assessment of magnetic resonance images (MRIs) for intact muscle and fatty replacement, and functional assessments. Results Sixteen patients completed the study. After 6 months of ERT, the percent tissue area occupied by glycogen in quadriceps and deltoid muscles decreased in 10 and 8 patients, respectively. No changes were detected on MRI from baseline to 6 months. A majority of patients showed improvements on functional assessments after 6 months of treatment. All treatment-related adverse events were mild or moderate. Conclusions This exploratory study provides novel insights into the histopathologic effects of ERT in late-onset Pompe disease patients. Ultrastructural examination of muscle biopsies demonstrated reduced lysosomal glycogen after ERT. Findings are consistent with stabilization of disease by ERT in treatment-naïve patients with late-onset Pompe disease.

Published
2016
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7. Rare variants in SQSTM1 and VCP genes and risk of sporadic inclusion body myositis

Author

Gang, Q., Bettencourt, C., Machado, P.M., Brady, S., Holton, J.L., Pittman, A.M., Hughes, D., Healy, E., Parton, M., Hilton-Jones, D., Shieh, P.B., Needham, M., Liang, C., Zanoteli, E., de Camargo, L.V., De Paepe, B., De Bleecker, J., Shaibani, A., Ripolone, M., Violano, R., Moggio, M., Barohn, R.J., Dimachkie, M.M., Mora, M., Mantegazza, R., Zanotti, S., Singleton, A.B., Hanna, M.G., Houlden, H., Gang, Q., Bettencourt, C., Machado, P.M., Brady, S., Holton, J.L., Pittman, A.M., Hughes, D., Healy, E., Parton, M., Hilton-Jones, D., Shieh, P.B., Needham, M., Liang, C., Zanoteli, E., de Camargo, L.V., De Paepe, B., De Bleecker, J., Shaibani, A., Ripolone, M., Violano, R., Moggio, M., Barohn, R.J., Dimachkie, M.M., Mora, M., Mantegazza, R., Zanotti, S., Singleton, A.B., Hanna, M.G., and Houlden, H.

Abstract

Genetic factors have been suggested to be involved in the pathogenesis of sporadic inclusion body myositis (sIBM). SQSTM1 and VCP are two key genes associated with several neurodegenerative disorders but have yet to be thoroughly investigated in sIBM. A candidate gene analysis was conducted using whole-exome sequencing data from 181 sIBM patients, and whole-transcriptome expression analysis was performed in patients with genetic variants of interest. We identified six rare missense variants in the SQSTM1 and VCP in seven sIBM patients (4.0%). Two variants SQSTM1 p.G194R and the VCP p.R159C were significantly overrepresented in this sIBM cohort compared with controls. Five of these variants had been previously reported in patients with degenerative diseases. The mRNA levels of MHC genes were up-regulated, this elevation being more pronounced in SQSTM1 patient group. We report for the first time potentially pathogenic SQSTM1 variants and expand the spectrum of VCP variants in sIBM. These data suggests that defects in neurodegenerative pathways may confer genetic susceptibility to sIBM and reinforce the mechanistic overlap in these neurodegenerative disorders.

Published
2016

8. The effects of an intronic polymorphism in TOMM40 and APOE genotypes in sporadic inclusion body myositis

Author

Gang, Q., Bettencourt, C., Machado, P.M., Fox, Z., Brady, S., Healy, E., Parton, M., Holton, J.L., Hilton-Jones, D., Shieh, P.B., Zanoteli, E., De Paepe, B., De Bleecker, J., Shaibani, A., Ripolone, M., Violano, R., Moggio, M., Barohn, R.J., Dimachkie, M.M., Mora, M., Mantegazza, R., Zanotti, S., Hanna, M.G., Houlden, H., Needham, M., Mastaglia, F., Gang, Q., Bettencourt, C., Machado, P.M., Fox, Z., Brady, S., Healy, E., Parton, M., Holton, J.L., Hilton-Jones, D., Shieh, P.B., Zanoteli, E., De Paepe, B., De Bleecker, J., Shaibani, A., Ripolone, M., Violano, R., Moggio, M., Barohn, R.J., Dimachkie, M.M., Mora, M., Mantegazza, R., Zanotti, S., Hanna, M.G., Houlden, H., Needham, M., and Mastaglia, F.

Abstract

A previous study showed that, in carriers of the apolipoprotein E (APOE) genotype ε3/ε3 or ε3/ε4, the presence of a very long (VL) polyT repeat allele in “translocase of outer mitochondrial membrane 40” (TOMM40) was less frequent in patients with sporadic inclusion body myositis (sIBM) compared with controls and associated with a later age of sIBM symptom onset, suggesting a protective effect of this haplotype. To further investigate the influence of these genetic factors in sIBM, we analyzed a large sIBM cohort of 158 cases as part of an International sIBM Genetics Study. No significant association was found between APOE or TOMM40 genotypes and the risk of developing sIBM. We found that the presence of at least 1 VL polyT repeat allele in TOMM40 was significantly associated with about 4 years later onset of sIBM symptoms. The age of onset was delayed by 5 years when the patients were also carriers of the APOE genotype ε3/ε3. In addition, males were likely to have a later age of onset than females. Therefore, the TOMM40 VL polyT repeat, although not influencing disease susceptibility, has a disease-modifying effect on sIBM, which can be enhanced by the APOE genotype ε3/ε3.

Published
2015

9. SQSTM1 and VCP mutations in a series of 205 inclusion body myositis cases

Author

Gang, Q., Bettencourt, C., Brady, S., Holton, J.L., Pittman, A.M., Hughes, D., Healy, E., Parton, M., Hilton-Jones, D., Shieh, P.B., Needham, M., Liang, C., Zanoteli, E., de Carmargo, L.V., De Paepe, B., De Bleecker, J., Shaibani, A., Ripolone, M., Violano, R., Moggio, M., Barohn, R.J., Dimachkie, M.M., Mora, M., Mantegazza, R., Zanotti, S., Singleton, A.B., Hanna, M.G., Houlden, H., Machado, P.M., Gang, Q., Bettencourt, C., Brady, S., Holton, J.L., Pittman, A.M., Hughes, D., Healy, E., Parton, M., Hilton-Jones, D., Shieh, P.B., Needham, M., Liang, C., Zanoteli, E., de Carmargo, L.V., De Paepe, B., De Bleecker, J., Shaibani, A., Ripolone, M., Violano, R., Moggio, M., Barohn, R.J., Dimachkie, M.M., Mora, M., Mantegazza, R., Zanotti, S., Singleton, A.B., Hanna, M.G., Houlden, H., and Machado, P.M.

Abstract

Introduction: Clinico-pathologically overlapping inherited dis- orders indicate that genetic factors might be involved in sporadic inclusion body myositis (IBM) pathogenesis. Objectives: To identify genetic risk factors associated with IBM. Methods: Whole-exome sequencing was performed in 205 IBM patients. Muscle tissue was pathologically evaluated and whole- transcriptome expression profiles generated. Results: We identified eight rare missense mutations in the SQSTM1 and VCP genes in 10 IBM patients (5%). Five of the mutations had been previously reported in amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) with Paget’s disease of bone (PDB); p62 staining was increased and MHC-I was up-regulated in the muscle tissue of these patients, Conclusions: Variants in SQSTM1 and VCP may constitute genetic susceptibility factors for IBM. The occurrence of mutations in SQSTM1 and VCP in IBM, ALS, FTD and PDB rein- forces the link between these disorders, pinpointing converging pathogenic pathways resulting in impaired autophagy-lysosome processing, causing dysregulation of protein homeostasis.

Published
2015

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