Abstract
Background and Aim
Mac-2 Binding Protein Glycosylation Isomer (M2BPGi) is a novel fibrosis marker. We examined the ability of M2BPGi to predict liver fibrosis in patients with biliary atresia.
Methods
Sixty-four patients who underwent living donor liver transplantation (LDLT) were included [median age, 1.1 years (range 0.4–16.0), male 16 patients (25.0 %)]. We examined M2BPGi levels in serum obtained the day before LDLT, and we compared the value of the preoperative M2BPGi levels with the histological evaluation of fibrosis using the METAVIR fibrosis score. Subsequently, we assessed the ability of M2BPGi levels to predict fibrosis.
Results
The median M2BPGi level in patients with BA was 6.02 (range, 0.36–20.0), and 0, 1, 1, 11, and 51 patients had METAVIR fibrosis scores of F0, F1, F2, F3, and F4, respectively. In patients with F4 fibrosis, the median M2BPGi level was 6.88 (quartile; 5.235, 12.10), significantly higher than that in patients with F3 fibrosis who had a median level of 2.42 (quartile; 1.93, 2.895, p < 0.01). Area under the curve analysis for the ability of M2BPGi level to predict grade fibrosis was 0.917, with a specificity and sensitivity of 0.923 and 0.941, respectively. In comparison with other fibrosis markers such as hyaluronic acid, procollagen-III-peptide, type IV collagen 7 s, and aspartate aminotransferase platelet ratio index, M2BPGi showed the strongest ability to predict grade F4 fibrosis.
Conclusion
M2BPGi is a novel fibrosis marker for evaluating the status of the liver in patients with BA, especially when predicting grade F4 fibrosis.
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Abbreviations
- APRI:
-
Aspartate aminotransferase platelet ratio index
- AUC:
-
Area under the curve
- BA:
-
Biliary atresia
- LB:
-
Liver biopsy
- LDLT:
-
Living donor liver transplantation
- P-III-P:
-
Procollagen-3-peptide
- ROC:
-
Receiver operating characteristics
- M2BPGi:
-
Mac-2 binding protein glycosylation isomer
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Acknowledgments
We thank Sysmex Co., Hyogo, Japan, which provided all materials and strategies for examination of M2BPGi.
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Yamada, N., Sanada, Y., Tashiro, M. et al. Serum Mac-2 binding protein glycosylation isomer predicts grade F4 liver fibrosis in patients with biliary atresia. J Gastroenterol 52, 245–252 (2017). https://doi.org/10.1007/s00535-016-1235-8
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DOI: https://doi.org/10.1007/s00535-016-1235-8