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Considerations in the Diagnosis of Chronic Granulomatous Disease
Joyce E Yu1, Antoine E Azar2, Hey J Chong3
1Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Columbia University Medical Center, New York, New York.
Insights
Chronic granulomatous disease (CGD) is a rare immunodeficiency due to NADPH oxidase defects, leading to recurrent infections and granulomas. Diagnosis involves evaluating neutrophil respiratory burst function.
Area of Science:
- Immunology
- Genetics
Background:
- Chronic granulomatous disease (CGD) is a rare primary immunodeficiency.
- It stems from defects in the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase complex.
- CGD patients experience recurrent infections and granuloma formation.
Purpose of the Study:
- To review diagnostic considerations for CGD.
- To highlight challenges in diagnosing CGD.
- To emphasize the importance of early and accurate diagnosis.
Main Methods:
- Review of existing literature on CGD diagnosis.
- Discussion of clinical presentation and common pathogens.
- Focus on diagnostic assays for NADPH oxidase function.
Main Results:
- CGD presents with infections affecting lymph nodes, lungs, liver, bone, and skin.
- Common pathogens include Staphylococcus aureus, Burkholderia cepacia, Serratia marcescens, Nocardia, and Aspergillus.
- Granuloma formation and autoimmune diseases are frequent complications.
Conclusions:
- Flow cytometric dihydrorhodamine neutrophil respiratory burst assay is a key diagnostic tool.
- Accurate diagnosis relies on recognizing clinical signs and utilizing appropriate functional assays.
- Addressing diagnostic challenges is crucial for timely patient management.
Abstract:
Chronic granulomatous disease (CGD) is a rare primary immunodeficiency that is caused by defects in the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase complex. The disease presents in most patients initially with infection, especially of the lymph nodes, lung, liver, bone, and skin. Patients with CGD are susceptible to a narrow spectrum of pathogens, and Staphylococcus aureus, Burkholderia cepacia complex, Serratia marcescens, Nocardia species, and Aspergillus species are the most common organisms implicated in North America. Granuloma formation, most frequently in the gastrointestinal and genitourinary systems, is a common complication of CGD and can be seen even before diagnosis. An increased incidence of autoimmune disease has also been described in patients with CGD and X-linked female carriers. In patients who present with signs and symptoms consistent with CGD, a flow cytometric dihydrorhodamine neutrophil respiratory burst assay is a quick and cost-effective way to evaluate NADPH oxidase function. The purpose of this review is to highlight considerations for and challenges in the diagnosis of CGD.
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