LMOD3-associated nemaline myopathy: Prenatal ultrasonographic, pathologic, and molecular findings

Michal Berkenstadt*, Ben Pode-Shakked, Ortal Barel, Hila Barash, Reuven Achiron, Yinon Gilboa, Dvora Kidron, Annick Raas-Rothschild

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


To describe the prenatal presentation, including ultrasonographic, histologic, and molecular findings, in 2 fetuses affected with LMOD3-related nemaline myopathy. Prenatal ultrasonographic examinations and histopathologic studies were performed on 2 fetuses with evidence of nemaline myopathy. To establish a molecular diagnosis, whole-exome sequencing was pursued for the affected fetuses. Nemaline myopathy is a common form of congenital myopathy manifesting with nonprogressive generalized muscle weakness, hypotonia, and electron-dense protein inclusions in skeletal myofibers. Although clinically, nemaline myopathy can be viewed as a common pathway phenotype, its molecular basis is heterogeneous, with mutations in 11 identified genes implicated in its pathogenesis so far. Whole-exome sequencing revealed that the affected fetuses were compound heterozygous for 2 newly reported pathogenic variants in the LMOD3 gene, which encodes leiomodin 3. To our knowledge, this article is the first report of LMOD3-related nemaline myopathy since the original reported cohort. We provide a detailed description of the prenatal imaging of these affected fetuses, which we hope, in combination with nextgeneration sequencing, may contribute to further diagnosis in additional families.

Original languageEnglish
Pages (from-to)1827-1833
Number of pages7
JournalJournal of Ultrasound in Medicine
Issue number7
StatePublished - Jul 2018


  • Arthrogryposis
  • Genetics
  • LMOD3
  • Leiomodin 3
  • Nemaline myopathy
  • Paediatrics


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