The Child with Elevated IgE and Infection Susceptibility

Area of Science:

• Immunology
• Genetics
• Pediatrics

Background:

• Over 13 years, genetic causes for conditions with high serum IgE, infection susceptibility, and other features have been identified.
• These conditions are often monogenic and present with complex clinical manifestations.

Purpose of the Study:

• To review the clinical presentation, laboratory features, and genetics of diseases with elevated IgE and infection susceptibility.
• To focus on Signal Transducer and Activator of Transcription 3 Loss Of Function (STAT3LOF) and DOCK8 deficiency.

Main Methods:

• Literature review of genetic etiologies for specific immune deficiencies.
• Analysis of clinical and laboratory features associated with mutations in STAT3, DOCK8, PGM3, IL6ST, ZNF341, IL6R, CARD11, and CARD14.

Main Results:

• Distinct phenotypes are observed, including connective tissue issues (STAT3LOF, IL6ST deficiency), viral susceptibility (DOCK8 deficiency, CARD11), and severe eczema/allergy (CARD14).
• These monogenic diseases share overlapping features but highlight specific genetic impacts on immune function.

Conclusions:

• Studying these distinct monogenic diseases enhances understanding of common conditions like allergy, eczema, and infection susceptibility.
• Insights gained can inform research into complex immune-related disorders and their genetic underpinnings.