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ISSN 1001-5256 (Print)
ISSN 2097-3497 (Online)
CN 22-1108/R
Volume 39 Issue 5
May  2023
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Article Navigation >  Journal of Clinical Hepatology  > 2023  >  39(5): 1105-1109

Etiological spectrum and clinical features of patients with unexplained liver disease manifesting as isolated jaundice: An analysis of 91 cases

DOI: 10.3969/j.issn.1001-5256.2023.05.016

  • Department of Hepatology, Nanjing Hospital Affiliated to Nanjing University of Chinese Medicine & Nanjing Second Hospital, Nanjing 210003, China

Research funding:

General Project of National Natural Science Foundation of China (81970454);

Jiangsu Provincial Commission of Health Key Scientific Research Project (ZD2021061)

More Information
  • Corresponding author: YANG Yongfeng, yangyongfeng@njucm.edu.cn (ORCID: 0000-0002-0942-4833)
  • Received Date: 2022-11-15
  • Accepted Date: 2022-12-15
  • Published Date: 2023-05-20
    Abstract
  •   Objective  To investigate the etiological and clinical features of patients with unexplained liver disease manifesting as isolated jaundice and the value of whole-exome sequencing in the diagnosis of such diseases.  Methods  A retrospective analysis was performed for the clinical data of the patients who attended Nanjing Second Hospital due to unexplained liver disease and underwent whole-exome sequencing from February 2017 to December 2021, and according to liver function parameters and imaging data, all cases were classified based on clinical phenotype and were diagnosed based on the whole-exome sequencing report. The Mann-Whitney U test was used for comparison of non-normally distributed continuous data between two groups, and the Kruskal-Wallis H test was used for comparison between multiple groups.  Results  A total of 519 patients underwent whole-exome sequencing, among whom 102 patients with missing or incomplete clinical data were excluded, and finally 417 patients were included in analysis, among whom 91(91/417, 21.82%) had the manifestation of isolated jaundice. The etiology of jaundice was not determined by whole-exome sequencing in 8 patients (8/91, 8.79%). With reference to genetic testing results, 83 patients (83/91, 91.21%) had a confirmed diagnosis, among whom there were 68 patients with hereditary hyperbilirubinemia (68/91, 74.72%), 3 patients with hereditary spherocytosis (3/91, 3.30%), 2 patients with pyruvate kinase deficiency (2/91, 2.20%), and 10 patients with UGT1A1 gene disease combined with other diseases (10/91, 10.99%). Hereditary hyperbilirubinemia was the main etiology, and there were 61 patients with UGT1A1 gene disease (61/91, 67.03%), 5 patients with Dubin-Johnson syndrome (5/91, 5.49%) and 2 patients with Rotor syndrome (2/91, 2.20%). There was a significant difference in indirect bilirubin/total bilirubin ratio between the patients with the different diagnoses above (H=22.835, P < 0.05), and the patients with UGT1A1 gene disease and other diseases had a significantly higher level of total bilirubin than those with UGT1A1 gene disease alone [95.8 (37.5-187.1) μmol/L vs 51.4 (34.8-267.1) μmol/L, Z=-2.372, P=0.018].  Conclusion  Whole-exome sequencing can help with the diagnosis of most cases of unexplained liver disease manifesting as isolated jaundice. Hereditary hyperbilirubinemia is the main etiology, and UGT1A1 gene disease is the most common disease. Whole-exome sequencing can assist the clinical diagnosis of unexplained liver disease manifesting as isolated jaundice.

     

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