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Hematologically important mutations: X-linked chronic granulomatous disease (third update)

Dirk Roos1, Douglas B Kuhns, Anne Maddalena

  • 1Sanquin Research, and Landsteiner Laboratory, Academic Medical Centre, University of Amsterdam, Plesmanlaan 125, 1066 CX, Amsterdam, The Netherlands. d.roos@sanquin.nl

Blood Cells, Molecules & Diseases
|August 24, 2010
PubMed

Insights

This study catalogs mutations in the CYBB gene, the cause of X-linked Chronic Granulomatous Disease (CGD). Identifying these genetic variations aids in diagnosing this rare immunodeficiency and distinguishing disease-causing mutations from benign polymorphisms.

Area of Science:

  • Immunology
  • Genetics

Background:

  • Chronic Granulomatous Disease (CGD) is a primary immunodeficiency affecting approximately 1 in 250,000 individuals.
  • It results from impaired superoxide production by the leukocyte enzyme NADPH oxidase, crucial for microbial killing.
  • The gp91-phox (Nox2) subunit, encoded by the CYBB gene on the X chromosome, is a key component of this enzyme.

Purpose of the Study:

  • To compile a comprehensive list of all identified mutations within the CYBB gene associated with X-linked CGD.
  • To document benign polymorphisms in the CYBB gene to aid in the accurate identification of pathogenic mutations.

Main Methods:

  • Systematic review and compilation of genetic data from patients with X-linked CGD.
  • Analysis of CYBB gene sequences to identify mutations and polymorphisms.

Main Results:

  • Mutations in the CYBB gene are responsible for approximately 70% of all CGD cases.
  • The article provides a detailed catalog of these disease-causing CYBB mutations.
  • A list of apparently benign CYBB polymorphisms is also presented.

Conclusions:

  • This curated list of CYBB mutations and polymorphisms serves as a valuable resource for diagnosing X-linked CGD.
  • Accurate genetic characterization is essential for understanding disease mechanisms and facilitating future diagnostic efforts.

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