Recessive mutations in ELOVL4 cause ichthyosis, intellectual disability, and spastic quadriplegia

Mohammed A. Aldahmesh, Jawahir Y. Mohamed, Hisham S. Alkuraya, Ishwar C. Verma, Ratna D. Puri, Ayodele A. Alaiya, William B. Rizzo, Fowzan S. Alkuraya

Research output: Contribution to journalArticle

107 Scopus citations

Abstract

Very-long-chain fatty acids (VLCFAs) play important roles in membrane structure and cellular signaling, and their contribution to human health is increasingly recognized. Fatty acid elongases catalyze the first and rate-limiting step in VLCFA synthesis. Heterozygous mutations in ELOVL4, the gene encoding one of the elongases, are known to cause macular degeneration in humans and retinal abnormalities in mice. However, biallelic ELOVL4 mutations have not been observed in humans, and murine models with homozygous mutations die within hours of birth as a result of a defective epidermal water barrier. Here, we report on two human individuals with recessive ELOVL4 mutations revealed by a combination of autozygome analysis and exome sequencing. These individuals exhibit clinical features of ichthyosis, seizures, mental retardation, and spasticity - a constellation that resembles Sjögren-Larsson syndrome (SLS) but presents a more severe neurologic phenotype. Our findings identify recessive mutations in ELOVL4 as the cause of a neuro-ichthyotic disease and emphasize the importance of VLCFA synthesis in brain and cutaneous development.

Original languageEnglish (US)
Pages (from-to)745-750
Number of pages6
JournalAmerican Journal of Human Genetics
Volume89
Issue number6
DOIs
StatePublished - Dec 9 2011

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

Fingerprint Dive into the research topics of 'Recessive mutations in ELOVL4 cause ichthyosis, intellectual disability, and spastic quadriplegia'. Together they form a unique fingerprint.

Cite this