Aravindhan Veerapandiyan, Anne M. Connolly, Katherine D. Mathews, Stanley Nelson, Craig McDonald, Richard S. Finkel, Vettaikorumakankav Vedanarayanan, Cuixia Tian, Susan Apkon, Julie A. Parsons, Jonathan H. Soslow, William Bryan Burnette, Kaitlin Y. Batley, Susan T. Iannaccone, Carolina Tesi Rocha, Kevin M. Flanigan, Diana Bharucha-Goebel, Sarah Wright, Migvis Monduy, Simona Treidler, Ashutosh Kumar, Nancy L. Kuntz, Vamshi K. Rao, Rachel Schrader, Saunder M. Bernes, Vikki Ann Stefans, Jena M. Krueger, Marcia V. Felker, Omer Abdul Hamid, Arpita Lakhotia, Susan Matesanz, Partha S. Ghosh, Natalie Katz, Hoda Abdel-Hamid, Chamindra G. Laverty, Bo Hoon Lee, Amy Harper, Leigh Ramos-Platt, Diana Castro, Russell J. Butterfield, Crystal M. Proud, Craig M. Zaidman, Emma Ciafaloni
{"title":"Access to novel therapies for Duchenne muscular dystrophy—Insights from expert treating physicians","authors":"Aravindhan Veerapandiyan, Anne M. Connolly, Katherine D. Mathews, Stanley Nelson, Craig McDonald, Richard S. Finkel, Vettaikorumakankav Vedanarayanan, Cuixia Tian, Susan Apkon, Julie A. Parsons, Jonathan H. Soslow, William Bryan Burnette, Kaitlin Y. Batley, Susan T. Iannaccone, Carolina Tesi Rocha, Kevin M. Flanigan, Diana Bharucha-Goebel, Sarah Wright, Migvis Monduy, Simona Treidler, Ashutosh Kumar, Nancy L. Kuntz, Vamshi K. Rao, Rachel Schrader, Saunder M. Bernes, Vikki Ann Stefans, Jena M. Krueger, Marcia V. Felker, Omer Abdul Hamid, Arpita Lakhotia, Susan Matesanz, Partha S. Ghosh, Natalie Katz, Hoda Abdel-Hamid, Chamindra G. Laverty, Bo Hoon Lee, Amy Harper, Leigh Ramos-Platt, Diana Castro, Russell J. Butterfield, Crystal M. Proud, Craig M. Zaidman, Emma Ciafaloni","doi":"10.1002/cns3.20076","DOIUrl":"10.1002/cns3.20076","url":null,"abstract":"<p>Duchenne muscular dystrophy (DMD) is a rare, X-linked, progressive, degenerative muscle disease due to pathogenic variants in the <i>DMD</i> gene resulting in absence of functional dystrophin protein.<span><sup>1</sup></span> Patients with DMD have irreversible muscle damage that begins at birth, and there is histologic evidence of disease progression with progressive inflammation and fibrosis within the first years of life.<span><sup>2</sup></span> Proactive interdisciplinary care, corticosteroids, and advances in disease-modifying treatments have changed the trajectory of the disease, leading to slower progression and improving life expectancy. This statement from clinicians who care for patients with DMD aims to provide insights into the current therapeutic landscape and access to novel therapies for DMD.</p><p>Recent years have seen a remarkable number of clinical trials to evaluate the disease-modifying ability of novel therapies for DMD. In addition to corticosteroids (deflazacort and vamorolone), several gene-targeted therapies were approved by the U.S. Food and Drug Administration (FDA). These include exon-skipping agents (eteplirsen, golodirsen, viltolarsen, and casimersen) that restore the reading frame of <i>DMD</i> transcripts and delandistrogene moxeparvovec-rokl, an adeno-associated virus–based microdystrophin gene transfer therapy. Further, there is a robust pipeline of targeted gene-based therapies and treatments targeting downstream pathways such as regulating muscle fiber degeneration and regeneration.<span><sup>3-5</sup></span> While existing treatments offer benefits by delaying or slowing disease progression, none provide a cure. The emergence of treatments that target the disease through multiple mechanisms underscores the importance of assessing combination therapies for DMD, akin to approaches used in treating oncological disorders. Given the progressive and irreversible nature of muscle degeneration in DMD, timely initiation of treatments is crucial. Delaying treatment initiation could result in permanent loss of motor function, underscoring the urgency of prompt intervention.</p><p>DMD is a severe and progressive rare disorder with significant gaps in available treatments. The low incidence and heterogeneity in genotypes and phenotypes pose challenges in conducting traditional large-scale placebo-controlled trials in a reasonable amount of time. The restoration of shortened functional forms of dystrophin serve as biomarkers representing appropriate endpoints in the FDA's accelerated approval pathway. This pathway allows FDA approval of drugs that treat serious conditions with unmet medical need based on a surrogate endpoint that is reasonably likely to predict clinical benefit.<span><sup>6</sup></span> It is important to note that therapies approved under accelerated approval are still required to undergo robust phase 3 confirmatory trials, providing data for traditional approval. There are currently 27 drugs approved","PeriodicalId":72232,"journal":{"name":"Annals of the Child Neurology Society","volume":"2 3","pages":"184-188"},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cns3.20076","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141357504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elizabeth Pickup, Christopher Redmond, Matthew A. Sherman, Lakshmi Ramachandran Nair, Sangeeta Sule, Elizabeth Wells, Alexandra B. Kornbluh
{"title":"Molecularly targeted immunotherapy used to treat a novel overlap syndrome of pediatric N-methyl-\u0000d-aspartate receptor encephalitis (NMDARE) and possible neurosarcoidosis","authors":"Elizabeth Pickup, Christopher Redmond, Matthew A. Sherman, Lakshmi Ramachandran Nair, Sangeeta Sule, Elizabeth Wells, Alexandra B. Kornbluh","doi":"10.1002/cns3.20074","DOIUrl":"10.1002/cns3.20074","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>Overlap syndromes have been described between <i>N</i>-methyl-\u0000<span>d</span>-aspartate receptor encephalitis (NMDARE) and other neuroinflammatory conditions, although rarely involving neurosarcoidosis. Molecularly targeted immunotherapy may be helpful in the empiric treatment of these conditions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We describe a 9-year-old boy with new-onset seizures and worsening encephalopathy.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Initial evaluation was concerning for neurosarcoidosis, including elevated cerebrospinal fluid (CSF) and serum angiotensin-converting enzyme and leptomeningeal with multiple cranial nerve enhancement on magnetic resonance imaging. CSF and serum cytokine profiles were used to choose targeted empiric immunotherapy, and the boy's seizure burden and encephalopathy improved after treatment with tocilizumab. The NMDA receptor antibody titer was later found to be elevated, raising suspicion for a novel overlap syndrome.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Interpretation</h3>\u0000 \u0000 <p>Our patient met the criteria for definite NMDARE and possible neurosarcoidosis. Given the mixed radiographic and serologic markers in this child, cytokine levels were used to direct the choice of empiric treatment, resulting in excellent clinical response. This case suggests that targeted immunotherapy informed by cytokine testing may be helpful in cases of high-acuity pediatric neuroinflammatory disease with limited diagnostic clarity.</p>\u0000 </section>\u0000 </div>","PeriodicalId":72232,"journal":{"name":"Annals of the Child Neurology Society","volume":"2 2","pages":"168-175"},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cns3.20074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141272261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}