Pediatric Nemaline Myopathy: A systematic review using individual patient data

Author:

Christophers BrianaORCID,Lopez Michael A.ORCID,Gupta Vandana A.,Baylies MaryORCID

Abstract

AbstractContextNemaline myopathy (NM) is a skeletal muscle disease that affects 1 in 50,000 live births.ObjectiveDevelop a narrative synthesis of the findings of a systematic review of the latest case descriptions of patients with nemaline myopathy.Data SourcesA systematic search of MEDLINE, Embase, CINAHL, Web of Science, and Scopus was performed using Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines using the keywords pediatric, child, nemaline myopathy, nemaline rod, rod myopathy.Study SelectionCase studies focused on pediatric NM and published in English between January 1, 2010 and December 31, 2020 in order to represent the most recent findings.Data ExtractionInformation was collected about the age of first signs, earliest presenting neuromuscular signs and symptoms, systems affected, progression, death, pathological description, and genetic changes.ResultsOf a total of 385 records, 55 case reports or series were reviewed, covering 101 pediatric patients from 23 countries. We review varying presentations in children ranging in severity despite being caused by the same mutation, in addition to current and future clinical considerations relevant to the care of patients with nemaline myopathy.LimitationsThe results are limited by findings shared in the literature, which varied in their detail and sometimes lacked histological or genetic results. Trends and correlations may be altered by information available.ConclusionsThis review synthesizes genetic, histopathologic, and disease presentation findings from pediatric nemaline myopathy case reports. These data strengthen our understanding of the wide spectrum of disease seen in nemaline myopathy. Future studies are needed to identify the underlying molecular mechanism of pathology, to improve diagnostics, and to develop better methods to improve quality of life for these patients.

Publisher

Cold Spring Harbor Laboratory

Reference79 articles.

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