Hyperimmunoglobulinemia E Syndrome

Hyperimmunoglobulinemia E Syndrome is a topic covered in the 5-Minute Pediatric Consult.

To view the entire topic, please or purchase a subscription.

Pediatrics Central™ is an all-in-one application that puts valuable medical information, via your mobile device or the web, in the hands of clinicians treating infants, children, and adolescents. Explore these free sample topics:

Pediatrics Central

-- The first section of this topic is shown below --

Basics

Description

Hyperimmunoglobulinemia E syndrome (HIES) is a primary immunodeficiency with markedly elevated serum IgE associated with recurrent skin abscesses, pulmonary infections, and eczematoid dermatitis.

Epidemiology

  • Rare
  • True incidence and prevalence is unknown; affects equal numbers of males and females

Risk Factors

Genetics

  • Autosomal dominant cases (AD-HIES) are caused by mutations in signal transducer and activator of transcription 3 (STAT3).
  • Autosomal recessive cases (AR-HIES) have mutations in the dedicator of cytokinesis-8 gene (DOCK8).
  • AR-HIES can also be secondary to tyrosine kinase 2 (TYK2) signaling alterations and phosphoglucomutase 3 (PGM3) mutations.
  • AR-HIES patients differ in phenotype from AD-HIES patients.
  • Sporadic cases occur.

Pathophysiology

  • STAT3 is integral in secretion and signaling of multiple cytokines involved in proinflammatory and anti-inflammatory responses.
  • A failure of Th17 cell differentiation and failure of IL-17 secretion makes patients susceptible to Candida infections.
  • Deficiency in IL-11 signaling results in tooth abnormalities and craniosynostosis.
  • DOCK8 deficiency results in failure of dendritic cells to migrate to lymph nodes and affects long-term memory B cells and viral-specific CD8+ T cells.

-- To view the remaining sections of this topic, please or purchase a subscription --