KMID : 1084220220290040254
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Journal of Rheumatic Diseases 2022 Volume.29 No. 4 p.254 ~ p.260
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Adenosine Deaminase 2 Deficiency Caused by Biallele Variants Including Splicing Variant: The First Case in Korea
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Cho Sun
Park Seong-Yeol Lee Jeong-Seok Ju Young-Seok Choi Yun-Jung Lee So-Young
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Abstract
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Deficiency of adenosine deaminase 2 (DADA2) is an autoinflammatory disease caused by pathogenic variants of the ADA2 gene and has similar clinical features to polyarteritis nodosa (PAN). We, herein, report a case of DADA2 in Korea that was diagnosed in a patient with childhood-onset PAN. The patient had a truncal ataxia and facial palsy caused by thalamic infarction at 34 months of age. Livedo reticularis with Raynaud phenomenon and abdominal pain with fever were followed. Radiologic examination showed multiple infarctions in brain and kidney. She was diagnosed with PAN using skin biopsy and angiography. She had severe hemorrhagic strokes despite medical treatments. Her disease activity was controlled after adding a tumor necrosis factor-¥á inhibitor. Molecular analysis revealed compound heterozygous pathogenic variants of ADA2 gene. This is the first case of DADA2 in Korea. Genetic analysis for ADA2 gene should be considered in patients with childhood-onset PAN.
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KEYWORD
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Polyarteritis nodosa, ADA2 deficiency, ADA2 gene, Deficiency of adenosine deaminase 2
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