Serum Biomarkers for Early Diagnosis of Chinese X-CGD Children: Case Reports and a Literature Review

Abstract

Since X-linked chronic granulomatosis disease (X-CGD) exhibits no specific clinical symptoms at an early stage, early diagnosis is difficult and depends predominantly on neonatal screening. Therefore, the aim of this study was to explore routine biomarkers for X-CGD in children and provide clues for early diagnosis. The cases of 10 children with X-CGD diagnosed at Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology from 2013 to 2016 and 122 Chinese children with X-CGD reported in the literature were summarized. Serum biomarkers and clinical symptoms at acute infection were organized. A total of 132 children with X-CGD were enrolled in this study. For 55.8% of the patients, the diagnosis was delayed more than one year after the onset of the first symptoms because no typical clinical symptoms manifested. Children with X-CGD at an acute infection stage showed three recurrent signs in terms of serum biomarkers: (1) the total number of white blood cells (especially N%) was increased significantly, accompanied by anemia in some cases; (2) C-reactive protein (CRP) levels were increased significantly; and (3) most of the patients exhibited very high serum IgG levels (>12 g/L). Diagnosis of X-CGD at an early age is difficult because of its nonspecific clinical features. Our study suggested children with X-CGD suffering acute infection show increases in three typical serum biomarkers, which can provide clues for early diagnosis.

Keywords

children / clinical features / early diagnosis / serum biomarkers / X-linked chronic granulomatosis disease

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