Two Cases With Tyrosine Kinase 2 Deficiency :

Year 2019, Volume: 7 Issue: Ek - IRUPEC 2019 Kongresi Tam Metin Bildirileri, 568 - 571, 10.12.2019

Hülya Vatansev

Abstract

About a quarter of the word’s population is infected with Mycobacterium tuberculosis, but this bacterium causes tuberculosis in less than 10% of infected individuals. In the countries in wich tuberculosis is highly endemic, primary tuberculosis is particulary common in the children and adults. Clinical and epidemiological studies suggest that tuberculosis in humans has a strong genetic basis. Autosomal recessive (AR) complete interleukin-12 receptor β 1 (IL-12R β 1) and tyrosine kinase 2 (TYK2) deficiencies are the only two inborn errors of immunity reported to date to underlie primary tuberculosis in otherwise healthy patients in two or more kindreds (1,2). Inherited IL-12R β 1 and TYK2 deficiencies impair both IL-12– and IL-23–dependent IFN-g immunity and are rare also causes of tuberculosis (3,4).

Keywords

Two Cases

References

• References: 1 A. Y. Kreins, M. J. Ciancanelli, S. Okada et all. Human TYK2 deficiency: Mycobacterial and viral infections without hyper-IgE syndrome. J. Exp. Med. 212, 1641–1662 (2015). 2. S. Boisson-Dupuis, J. Bustamante, J. El-Baghdadi, Y. Camciogluet all. Inherited and acquired immunodeficiencies underlying tuberculosis in childhood. Immunol. Rev. 264, 103–120 (2015). 3. J. Bustamante, S. Boisson-Dupuis, L. Abel, J. et all. Mendelian susceptibility to mycobacterial disease: Genetic, immunological, and clinical features of inborn errors of IFN- β 1 immunity. Semin. Immunol. 26, 454–470 (2014). 4 S. Boisson-Dupuis, J. El Baghdadi, N. Parvaneh. et all. IL-12R 1 deficiency in two of fifty children with severe tuberculosis from Iran, Morocco,and Turkey. PLOS ONE 6, e18524 (2011).