Diversity in Serine/Threonine Protein Kinase-4 Deficiency and Review of the Literature

Cagdas D. N., Halacli S., Tan C., Esenboğa S., Karaatmaca B., Cetinkaya P. G., ...More

JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE, vol.9, no.10, pp.3752-3770, 2021 (SCI-Expanded, Scopus) identifier identifier identifier

  • Publication Type: Article / Review
  • Volume: 9 Issue: 10
  • Publication Date: 2021
  • Doi Number: 10.1016/j.jaip.2021.05.032
  • Journal Name: JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, EMBASE, MEDLINE
  • Page Numbers: pp.3752-3770
  • Keywords: STK4, Mammalian Sterile 20-like Protein Kinase 1, Isolated CD4 lymphopenia, Cutaneous viral infections, Atopy, Lymphoma, Lupus nephritis, Leukocytoclastic vasculitis, Juvenile idiopathic arthritis, Amyloidosis, MST1, REGULATORY T-CELLS, PRIMARY IMMUNODEFICIENCIES, MUTATIONS, DISEASE, FOXO1, AUTOIMMUNITY, TOLERANCE, SURVIVAL, PATHWAY, GENE
  • Hacettepe University Affiliated: Yes

Abstract

BACKGROUND: Serine/threonine kinase-4 (STK4) deficiency is an autosomal recessive combined immunodeficiency. OBJECTIVE: We aimed to define characteristic clinical and laboratory features to aid the differential diagnosis and determine the most suitable therapy. METHODS: In addition to nine STK4 deficiency patients, we reviewed 15 patients from the medical literature. We compared B lymphocyte subgroups of the cohort with age-matched healthy controls. RESULTS: In the cohort, median age at symptom onset and age at diagnosis were 6 years 8 months (range, 6-248 months) and 7 years 5 months (range, 6-260 months), respectively. The main clinical findings were infections (in all nine patients [9 of 91), autoimmune or inflammatory diseases (7 of 9), and atopy (4 of 9). CD4 lymphopenia (9 out 9), lymphopenia (7 out 9), intermittent eosinophilia (4 out 9), transient neutropenia (3 out 9), low IgM (4 out 9), and high IgE (4 out 9) were common. Decreased recent thymic emigrants, naive and central memory T cells, but increased effector memory T cells were present. The increase in plasmablasts (P = .003) and decrease in switched memory B cells (P = .022) were significant. When 24 patients are analyzed, cutaneous viral infections (n = 20), recurrent pneumonia (n = 18), Epstein Barr virus-associated lympho-proliferation (n = 11), atopic dermatitis (n = 10), autoimmune cytopenia (n = 7), and lymphoma (n = 6) were frequent. Lymphopenia, CD4 lymphopenia, high IgG, IgA, and IgE were common laboratory characteristics. CONCLUSIONS: The differential diagnosis with autosomal recessive hyper-IgE syndrome is crucial. Because, atopy and CD4 lymphopenia are common in both diseases. Immunoglobulins, antibacterial, and antiviral prophylaxis are the mainstays of treatment. Clinicians may use immunomodulatory therapies during inflammatory or autoimmune complications. However, more data are needed to recommend hematopoietic stem cell transplantation as a safe therapy. (C) 2021 American Academy of Allergy, Asthma & Immunology