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Published on: August 15, 2019
Family clusters of variant X-linked chronic granulomatous disease
Jeffrey M Bender1, Thomas H Rand, Krow Ampofo
1Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, Utah, USA. jeffrey.bender@hsc.utah.edu
Insights
Chronic granulomatous disease (CGD) is a rare immunodeficiency. Variant X-linked CGD presents milder symptoms, often diagnosed later, emphasizing the need for vigilant screening and early intervention.
Area of Science:
- Immunology
- Genetics
- Pediatrics
Background:
- Chronic granulomatous disease (CGD) is a rare inherited immunodeficiency.
- It stems from defects in the NADPH oxidase system, crucial for neutrophil oxidative burst.
- Clinical presentation varies with the extent of NADPH oxidase system involvement.
Observation:
- Presents three cases of variant X-linked CGD.
- Variant X-linked CGD often has a less severe phenotype and later onset.
- Diagnosis can be challenging, requiring a high index of suspicion for unusual infections like Burkholderia cepacia pneumonia.
Findings:
- Improved testing methods are enhancing recognition of variant X-linked CGD.
- Early diagnosis through screening is vital for managing the condition.
- Family screening facilitates early intervention and genetic counseling.
Implications:
- Highlights the importance and limitations of CGD screening protocols.
- Emphasizes the need for awareness of variant X-linked CGD in clinical practice.
- Suggests that early diagnosis and intervention can improve patient outcomes and inform family genetic counseling.
Abstract:
Chronic granulomatous disease (CGD) is a rare inherited immunodeficiency disorder. The clinical presentation is varied depending on the degree of involvement of the NADPH oxidase system responsible for the oxidative burst of neutrophils. We present 3 cases of variant X-linked CGD in an effort to introduce the disease and highlight the importance and limitations of CGD screening. The variant X-linked form of CGD results in a less severe phenotype and frequently presents later in life. Variant X-linked CGD is difficult to diagnose, but is becoming more readily recognized based on improved testing methods. A high index of suspicion in the setting of unusual infections such as Burkholderia cepacia pneumonia is essential to make the diagnosis. Family screening can lead to early intervention, prophylaxis, and appropriate genetic counseling.
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