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Research Article Open access CC BY 3.0

Novel GLRB Gene Mutation in a Saudi Baby with Hyperekplexia

Tamer Mohamed Rizk, Adel Ahmed Hassan Mahmoud

International Neuropsychiatric Disease Journal · pp. 21–27 · Published 18 Nov 2013

10.9734/INDJ/2014/5368

Abstract

Aim: We aim to describe a case of hyperekplexia in a Saudi neonate due to Novel mutation in GLRB. Case Presentation: One month old Saudi neonate with hypertonicity, repetitive episodes of jitteriness and exaggerated startle reflex. Discussion: Hyperekplexia (OMIM:149400, 138492 & 604159) is considered a rare, autosomal dominant neurological disorder that presents early in life with hypertonicity,  exaggerated startle response and life threatening neonatal apnea. It has been caused by mutation in the alpha-1subunit (GLRA1) on chromosome 5q32, Beta subunit (GLRB) gene on chromosome 4q31 of the inhibitory glycine receptor and GLYT2 gene (SLC6A5) on chromosome 11p15 which encodes a presynaptic glycine transporter. Conclusion: Raising awareness of the presence of this treatable disease may prevent unnecessary exposure to anti-epileptic medications, prevent life threatening apneas and improve long term outcome.  

Startle hyperekplexia glycine receptor stiff baby syndrome

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