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Hyperimmunoglobulinemia E Syndrome, Pediatric


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 patients differ in phenotype from AD-HIES patients.
  • Sporadic cases do occur.

Pathophysiology


  • STAT3 is integral in secretion and signaling of multiple cytokines involved in proinflammatory and anti-inflammatory responses.
  • A failure of Th 17 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.

Diagnosis


History


  • Recurrent infections
    • Skin
      • Abscesses
      • Furuncles
      • Cellulitis
      • Lymphadenitis
    • Sinopulmonary infections
      • Pneumonia with aberrant healing forming pneumatoceles and bronchiectasis
    • Fungal infections: mostly mucocutaneous candidiasis
    • Typical organisms: Staphylococcus aureus, Streptococcus pneumoniae, Haemophilus influenzae
    • Opportunistic infections with Pneumocystis jiroveci pneumonia
    • Those with AR-HIES have viral skin infections, including molluscum, warts, and/or recurrent herpes.
  • Rash
    • Present in newborn period
    • Can resolve or become eczematoid
  • Retention of primary teeth
    • Delayed exfoliation of 3 or more teeth in 70% of patients
  • Vascular anomalies
    • Tortuosity, dilation, and aneurysms of medium-sized vessels

Physical Exam


  • Facial features are noted in late childhood to early adolescence, including:
    • Asymmetric facies
    • Prominent forehead/chin
    • Wide-set eyes
  • Dermatitis
  • Skeletal anomalies
    • Scoliosis
    • Craniosynostosis
    • Hyperextensible joints
    • Osteopenia leading to resultant bone fractures from minor trauma
  • Hard palate anomalies, high-arched palate

Diagnostic Tests & Interpretation


Lab
  • Total serum IgE of >2,000 IU/mL
    • Elevation may not be present in newborns.
    • Can decline to normal levels in adult years
    • Level does not correlate with disease severity.
  • Peripheral eosinophilia
    • Does not correlate with IgE
    • Present in >90% of patients
  • Immunoglobulin levels
    • IgG and IgM are usually normal.
    • IgA may be normal or low.
    • IgM is often decreased in AR-HIES.
  • Specific antibody response is variable.
  • Reduced CD45RO+ memory T cells and memory B cells with normal total lymphocyte counts
  • Neutropenia may be present in a subset of patients.

Imaging
CT of the lungs if history of pneumonia to look for bronchiectasis and/or pneumatoceles ‚  

Differential Diagnosis


  • Atopic dermatitis
  • Wiskott-Aldrich syndrome
  • Severe combined immunodeficiency (SCID)
  • Omenn syndrome
  • Immune dysregulation, polyendocrinopathy, enteropathy X-linked syndrome (IPEX)
  • Netherton syndrome

Treatment


Medication


  • Prophylactic antibiotics, typically trimethoprim/sulfamethoxazole, for prevention of staphylococcal infection
  • Immunoglobulin replacement therapy in the case of concomitant hypogammaglobulinemia
  • Consideration of antifungal prophylaxis if recurrent/chronic candida infections

Additional Therapies


General Measures


  • Implement good management of dermatitis with regular hydration and emollient use.
  • Control pruritus with antihistamines.
  • Dilute bleach baths to decrease staphylococcal skin colonization.
  • Promptly and aggressively treat all infections.
  • Physical therapy for joint pain related to hyperextensibility

Ongoing Care


Follow-up Recommendations


Patient Monitoring
Blood pressure monitoring in patients, especially those with known vascular anomalies, as hypertension is common ‚  

Complications


  • Parenchymal lung changes from aberrant healing. Pulmonary surgery to correct these is associated with an increased risk of further complications.
  • Increased chance of malignancy, most commonly lymphoma

Additional Reading


  • Buckley ‚  RH. The hyper-IgE syndrome. Clin Rev Allergy Immunol.  2001;20(1):139 " “154. ‚  [View Abstract]
  • Davis ‚  SD, Schaller ‚  J, Wedgwood ‚  RJ. Job 's syndrome: recurrent, "cold " , staphylococcal abscesses. Lancet.  1966;1(7445):1013 " “1015. ‚  [View Abstract]
  • Freeman ‚  AF, Holland ‚  SM. Clinical manifestations of hyper IgE syndromes. Dis Markers.  2010;29(3 " “4):123 " “130. ‚  [View Abstract]
  • Paulson ‚  ML, Freeman ‚  AF, Holland ‚  SM. Hyper IgE syndrome: an update on clinical aspects and the role of signal transducer and activator of transcription 3. Curr Opin Allergy Clin Immunol.  2008;8(6):527 " “533. ‚  [View Abstract]
  • Yong ‚  PF, Freeman ‚  AF, Engelhart ‚  KR, et al. An update on the hyper-IgE syndromes. Arthritis Res Ther.  2012;14(6):228 " “237. ‚  [View Abstract]

Codes


ICD09


  • 288.1 Functional disorders of polymorphonuclear neutrophils

ICD10


  • D82.4 Hyperimmunoglobulin E [IgE] syndrome

SNOMED


  • 50926003 Job 's syndrome (disorder)

FAQ


  • Q: How do AD-HIES and AR-HIES differ?
  • A: Aside from arising from different mutations, AD-HIES has more skeletal and facial anomalies, whereas AR-HIES is more often associated with viral skin infections and has a higher chance of malignancy.
  • Q: Will HIES patients show signs typical of infection?
  • A: HIES patients may lack classical signs of infection such as warmth and redness. Skin infections have been referred to as "cold "  abscesses.
  • Q: What are the other names for HIES?
  • A: HIES has been referred to as Buckley syndrome, Job-Buckley syndrome, and Job syndrome in the literature. In the initial 1966 case series, Davis and colleagues wrote that the "appearance of these patients and the history of recurrent abscesses and skin infections makes the name " ˜Job 's syndrome ' seem suitable. "  The reference is to the Biblical character Job, who was smote "with sore boils from the sole of his foot unto his crown "  (Job, Chapter 2; Verse 7).
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