Mutation screen reveals novel variants and expands the phenotypes associated with DYNC1H1

Alleene V. Strickland, Maria Schabhüttl, Hans Offenbacher, Matthis Synofzik, Natalie S. Hauser, Michaela Brunner-Krainz, Ursula Gruber-Sedlmayr, Steven A. Moore, Reinhard Windhager, Benjamin Bender, Matthew Harms, Stephan Klebe, Peter Young, Marina Kennerson, Avencia Sanchez Mejias Garcia, Michael A. Gonzalez, Stephan Züchner, Rebecca Schule, Michael E. Shy, Michaela Auer-Grumbach

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

Dynein, cytoplasmic 1, heavy chain 1 (DYNC1H1) encodes a necessary subunit of the cytoplasmic dynein complex, which traffics cargo along microtubules. Dominant DYNC1H1 mutations are implicated in neural diseases, including spinal muscular atrophy with lower extremity dominance (SMA-LED), intellectual disability with neuronal migration defects, malformations of cortical development, and Charcot–Marie–Tooth disease, type 2O. We hypothesized that additional variants could be found in these and novel motoneuron and related diseases. Therefore, we analyzed our database of 1024 whole exome sequencing samples of motoneuron and related diseases for novel single nucleotide variations. We filtered these results for significant variants, which were further screened using segregation analysis in available family members. Analysis revealed six novel, rare, and highly conserved variants. Three of these are likely pathogenic and encompass a broad phenotypic spectrum with distinct disease clusters. Our findings suggest that DYNC1H1 variants can cause not only lower, but also upper motor neuron disease. It thus adds DYNC1H1 to the growing list of spastic paraplegia related genes in microtubule-dependent motor protein pathways.

Original languageEnglish (US)
Pages (from-to)2124-2134
Number of pages11
JournalJournal of Neurology
Volume262
Issue number9
DOIs
StatePublished - Sep 22 2015

Keywords

  • DYNC1H1
  • Epilepsy
  • Gastric volvulus
  • Peripheral neuropathy
  • Spastic paraplegia
  • Spinal muscular atrophy

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology

Fingerprint Dive into the research topics of 'Mutation screen reveals novel variants and expands the phenotypes associated with DYNC1H1'. Together they form a unique fingerprint.

  • Cite this

    Strickland, A. V., Schabhüttl, M., Offenbacher, H., Synofzik, M., Hauser, N. S., Brunner-Krainz, M., Gruber-Sedlmayr, U., Moore, S. A., Windhager, R., Bender, B., Harms, M., Klebe, S., Young, P., Kennerson, M., Garcia, A. S. M., Gonzalez, M. A., Züchner, S., Schule, R., Shy, M. E., & Auer-Grumbach, M. (2015). Mutation screen reveals novel variants and expands the phenotypes associated with DYNC1H1. Journal of Neurology, 262(9), 2124-2134. https://doi.org/10.1007/s00415-015-7727-2