Variability of epilepsy, autism, brachydactyly, and other clinical features in familial and sporadic 2q37.3 deletion

Antony E. Shrimpton, John A. Kessler, Lisa G. Shaffer, Cindy Stack, Ali Jalali, Robert Little, Joshua Goldstein, Brad Angle, Ajit Chary, Justine Coppinger, David J. Mathison, Sophia Khan, Andrew K. Poznanski, William B. Dobyns, David W. Craig, Joe J. Hoo, Dean Sarco, Alexander G. Bassuk

Research output: Contribution to journalArticlepeer-review

Abstract

Chromosomal microdeletion syndromes are frequently associated with neurological disease including epilepsy and behavioral abnormalities. Yet, for most microdeletions, neurological phenotypes are variable and the exact molecular cause of neurological disease is not yet understood. Terminal deletions in the long arm of chromosome 2 (2q37.3) are among the most common microdeletion syndromes diagnosed, and have been associated with epilepsy, autistic-like features, short stature, obesity, and brachydactyly type E (short 4th and 5th metacarpals and metatarsals). However, neither epilepsy nor any of the other clinical features are invariant in 2q37.3 deletion. To elucidate the genetic mechanisms underlying this clinical variability we report what is, to our knowledge, the first description of inherited 2q37.3 deletion (without other complex chromosomal rearrangements) in three family members and present two sporadic cases and accompanying chromosomal microarray data. The clinical features of the three familial and two sporadic cases combined with the chromosomal microarray results suggest that all of the clinical features seen in 2q37.3 deletion may be variably expressed.

Original languageEnglish (US)
Pages (from-to)279-283
Number of pages5
JournalJournal of Pediatric Neurology
Volume7
Issue number3
DOIs
StatePublished - 2009
Externally publishedYes

Keywords

  • 2q37.3
  • Autism
  • Brachydactyly
  • Epilepsy
  • Microarray
  • Microdeletion

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