Association of HAX1 deficiency with neurological disorder

Neuropediatrics. 2007 Oct;38(5):261-3. doi: 10.1055/s-2008-1062704.

Abstract

Severe congenital neutropenia (SCN) is a rare, heterogeneous, primary immunodeficiency disorder characterized by early onset of severe bacterial infections. We here describe a case of SCN associating neutropenia and neurodevelopmental delay. The girl was well until the age of 9 months, when she suffered from an episode of convulsion. Subsequently, she developed several episodes of superficial abscesses, oral ulcers and otitis media. Further work-up revealed severe congenital neutropenia caused by a homozygous mutation (R86X) in the antiapoptotic molecule HAX1. She also suffered from psychomotor retardation and recurrent seizures. This case illustrates that HAX1 deficiency may be associated with a neurological phenotype.

Publication types

  • Case Reports

MeSH terms

  • Adaptor Proteins, Signal Transducing
  • Bacterial Infections / diagnosis
  • Bacterial Infections / genetics
  • Base Pairing / genetics
  • Child
  • Codon, Nonsense
  • DNA Mutational Analysis*
  • Developmental Disabilities / diagnosis
  • Developmental Disabilities / genetics*
  • Electroencephalography
  • Epilepsies, Myoclonic / diagnosis
  • Epilepsies, Myoclonic / genetics
  • Female
  • Homozygote*
  • Humans
  • Immunologic Deficiency Syndromes / diagnosis
  • Immunologic Deficiency Syndromes / genetics*
  • Neurologic Examination
  • Neutropenia / diagnosis
  • Neutropenia / genetics*
  • Opportunistic Infections / diagnosis
  • Opportunistic Infections / genetics
  • Pedigree
  • Phenotype
  • Proteins / genetics*
  • Recurrence

Substances

  • Adaptor Proteins, Signal Transducing
  • Codon, Nonsense
  • HAX1 protein, human
  • Proteins