Biochemical response to ursodeoxycholic acid among PBC patients: a nationwide population-based study.
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CitationBiochemical response to ursodeoxycholic acid among PBC patients: a nationwide population-based study. 2019, 54(5):609-616 Scand J Gastroenterol
AbstractObjective: To assess the proportion of PBC patients with a biochemical response to ursodeoxycholic acid (UDCA) in a population-based cohort and the association of biochemical response with outcomes. Methods: All patients diagnosed with PBC in Iceland from 1991-2015 were identified. Patients taking UDCA for an adequate period of time were analyzed for treatment response according to the Barcelona, Paris I, Paris II and Toronto criteria and outcomes. Results: Overall 182 females and 40 males were diagnosed with PBC and 135 patients were treated with UDCA. Overall 99 (73%) patients had adequate data on UDCA treatment and results of liver tests to assess biochemical response according to the Barcelona criteria, 95 (70%) according to the Toronto criterion and 85 (63%) according to the Paris I and II criteria. In all 74% (n = 63), 67% (n = 64), 54% (n = 53) and 46% (n = 39) responded to treatment according to the Paris I, Toronto, Barcelona and Paris II criteria. Among nonresponders according to the Paris I, Toronto, Paris II and Barcelona criteria, 50%, 39%, 33% and 30% developed cirrhosis versus 10%, 6%, 5% and 11% of responders, HR 5.36 (p = .002), 6.61 (p = .002), 10.94 (p = .003) and 2.21(p = .11), respectively. Age-adjusted mortality was significantly lower among responders according to the Paris I and Paris II criteria, HR 0.33 (p = .02) and 0.31 (p = .02), respectively. Conclusion: Development of cirrhosis and higher mortality was significantly associated with a lack of biochemical response to UDCA. Frequent development of cirrhosis and increased mortality in nonresponders underlines the need for a more effective therapy than UDCA for this sizeable subgroup of patients.
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