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- W2991079638 abstract "Abstract Background Chronic granulomatous disease (CGD) is a rare primary immunodeficiency disorder caused by a defect in the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase complex. The disease primarily presents with recurrent infections, and patients may also present with inflammatory conditions, including noninfectious colitis, and an increased frequency of autoimmunity. We report here a patient with CGD in whom the presentation, unlike the classical presentation of CGD, was predominantly of an inflammatory and autoimmune phenotype. Case presentation A 3-year-old Pakistani female presented with bloody diarrhea since the age of 7 days, followed by the development of perianal abscesses and fistula. There was no other history of recurrent infections. The patient subsequently developed joint pain and stiffness with persistently elevated inflammatory markers and elevated anti-cyclic citrullinate peptide (anti-CCP) antibody titer. She was diagnosed with oligoarticular juvenile idiopathic arthritis and colitis. The diagnosis of CGD was later made and was based on the absence of NADPH oxidase activity in the patient’s neutrophils upon phorbol myristate acetate (PMA) stimulation using the dihydrorhodamine-1,2,3 (DHR) flow cytometry test. Targeted next-generation sequencing revealed an unreported deletion mutation in exon 10 as a homozygous loss-of-function variant of the human neutrophil oxidase factor 2 ( NCF2 ) ( NCF2 : NM_001190789, nucleotide change: c.855_856del:p.T285fs). The gene encodes a protein subunit, p67 phox , in the NADPH enzyme complex. Conclusions The case emphasizes the importance of maintaining high clinical suspicion of immunodeficiency and CGD in patients with very-early-onset colitis and autoimmune disorders. This case is important due to its rarity and because it might represent a previously undiscovered mutation, which is possibly more common in the patient’s ethnic group. Other mutations in NCF2 have been linked to inflammatory bowel disease and autoimmunity, but without CGD, suggesting similarities in the pathogenesis." @default.
- W2991079638 created "2019-12-05" @default.
- W2991079638 creator A5072797450 @default.
- W2991079638 date "2019-11-21" @default.
- W2991079638 modified "2023-09-25" @default.
- W2991079638 title "A novel mutation in NCF2 resulting in very-early-onset colitis and juvenile idiopathic arthritis in a patient with chronic granulomatous disease" @default.
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- W2991079638 doi "https://doi.org/10.1186/s13223-019-0386-6" @default.
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