Abstract
Background
Response to ursodeoxycholic acid (UDCA) in primary biliary cholangitis (PBC) has been traditionally assessed 1 to 2 years after treatment initiation. With the development of new drugs, some patients may benefit from an earlier introduction of second-line therapies.
Aims
This study aims to identify whether well-validated response criteria could correctly identify individuals likely to benefit from add-on second-line therapy at 6 months.
Methods
Analysis of a multicenter retrospective cohort which included only patients with clear-cut PBC.
Results
206 patients with PBC (96.6% women; mean age 54 ± 12 years) were included. Kappa concordance was substantial for Toronto (0.67), Rotterdam (0.65), Paris 1 (0.63) and 2 (0.63) criteria at 6 and 12 months, whereas Barcelona (0.47) and POISE trial (0.59) criteria exhibited moderate agreement. Non-response rates to UDCA was not statistically different when assessed either at 6 or 12 months using Toronto, Rotterdam or Paris 2 criteria. Those differences were even smaller or absent in those subjects with advanced PBC. Mean baseline alkaline phosphatase was 2.73 ± 1.95 times the upper limit of normal (× ULN) among responders versus 5.05 ± 3.08 × ULN in non-responders (p < 0.001).
Conclusions
After 6 months of treatment with UDCA, the absence of response by different criteria could properly identify patients who could benefit from early addition of second-line therapies, especially in patients with advanced disease or high baseline liver enzymes levels.
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Data availability
Data is available upon request to corresponding author.
Abbreviations
- UDCA:
-
Ursodeoxycholic acid
- PBC:
-
Primary biliary cholangitis
- ULN:
-
Upper limit of normal
- BCSG:
-
Brazilian Cholestasis Study Group
- AMA:
-
Anti-mitochondrial antibodies
- ALP:
-
Alkaline phosphatase
- ALT:
-
Alanine aminotransferase
- AST:
-
Aspartate aminotransferase
- GGT:
-
Gamma-glutamyl transferase
- IQR:
-
Interquartile range
- ANA:
-
Antinuclear antibodies
- SD:
-
Standard deviation
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Funding
This work was supported by Brazilian Society of Hepatology and Instituto Brasileiro do Fígado – IBRAFIG.
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Cançado, G.G.L., Couto, C.A., Terrabuio, D.R.B. et al. Response to Ursodeoxycholic Acid May Be Assessed Earlier to Allow Second-Line Therapy in Patients with Unresponsive Primary Biliary Cholangitis. Dig Dis Sci 68, 514–520 (2023). https://doi.org/10.1007/s10620-022-07654-x
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DOI: https://doi.org/10.1007/s10620-022-07654-x