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  • Title: A model incorporating serum C3 complement levels may be useful for diagnosing biliary atresia in infants.
    Author: Liang J, Li H, Fu J, Liang Q, Liu T, Yang F, Zhang B, Bai X, Wen Z.
    Journal: Gastroenterol Hepatol; 2022 Jan; 45(1):47-58. PubMed ID: 34029644.
    Abstract:
    INTRODUCTION: Correctly identifying patients with biliary atresia (BA), while avoiding invasive diagnostic methods is challenging. The purpose of this study was to determine the value of serum immune indicators for distinguishing BA from other causes of cholestasis in infants. PATIENTS AND METHODS: The data of infants with a surgical/histological diagnosis of BA and those with other causes of cholestatic jaundice were retrospectively analyzed. Patients were divided into a BA group and a cholestasis control (CC) group. Biochemical parameters, major lymphocyte subsets, immunoglobin and C3 and C4 complement levels were compared between the groups. RESULTS: A total of 129 infants with BA and 63 with other causes of cholestasis (CC control group) with a median age of 2.2 months were included in the analysis. The levels of CD3+ T cells, CD3+CD4+ T cells, and premature T cells and the levels of C3 and C4 were all significantly higher in the BA group compared to the CC group (all P<0.05). Pair-wise correlation analyses indicated that C3 and C4 had a significant positive correlation with γ-GT in the BA group, but not in the CC group. Five indices were found to be significantly associated with BA: stool color, globulin, γ-GT, C3 and C4. A model incorporating stool color, gamma-glutamyl transpeptidase level, and C3 level exhibited an area under the ROC curve (AUC) of 0.93, and a sensitivity of 93% and specificity of 83% for the diagnosis of BA. CONCLUSIONS: Models incorporating serum C3 levels may be useful for accurately diagnosing BA in infants.
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