Sarcomeric myopathies associated with tremor: new insights and perspectives

  • Janis Stavusis
  • Janelle Geist
  • Aikaterini Kontrogianni-KonstantopoulosEmail author


Myopathies are a large and heterogeneous group of disorders associated with mutations in structural and regulatory genes responsible for proper muscle assembly, organization and function. Despite the molecular diversity of inherited myopathies, they have historically been classified by the phenotypic traits observed in affected patients. It is therefore common for myopathies originating from mutations in different genes to be grouped together due to similar physical manifestations, and conversely myopathies resulting from mutations in the same gene to be considered separately due to disparate symptoms. Herein, we focus on an early onset myopathy linked to inherited or de novo mutations in sarcomeric genes that is characterized by muscle weakness, hypotonia and tremor, and further highlight that it may constitute a new form of myopathy, with tremor as its defining feature. Based on recent reports, we also discuss the possible myogenic origin of the tremor that may start at the level of the sarcomere due to structural and/or contractile alterations occurring as a result of the identified mutations. It is our hope that establishment of this form of myopathy accompanied by myogenic tremor as a new disease entity will have important diagnostic and therapeutic implications.


Sarcomeric genes Congenital myopathy Muscle weakness Hypotonia Tremor 



This work was supported by the Fulbright Scholar Program (to JS), NIH (Training Program in Muscle Biology, T32 AR007592-17 to J.G. and R21AR072981 to A.K.K.), and the Muscular Dystrophy Association (Research Grant 313579 to A.K.K.).

Compliance with ethical standards

Conflict of interest

The authors have no conflict to declare.


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Internet resources

  1. Human Protein Atlas available from

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Latvian Biomedical Research and Study CentreRigaLatvia
  2. 2.Dept. of Biochemistry and Molecular BiologyUniversity of Maryland School of MedicineBaltimoreUSA

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