Primary biliary cirrhosis is a rare, chronic liver disease of unknown etiology. Colchicine, a plant alkaloid, has been used to treat patients with primary biliary cirrhosis and was tested in randomised clinical trials. When all identified trials were combined, colchicine appeared to be not significantly different from placebo/no intervention in respect to mortality, mortality and/or patients who underwent liver transplantation, liver complications, liver biochemistry, liver histology, and the occurrences of adverse events. Colchicine may reduce pruritus, but this finding may be due to bias. The addition of ursodeoxycholic acid did not significantly influence the effect of colchicine.
阅读完整摘要
Colchicine has been used for patients with primary biliary cirrhosis because of its immunomodulatory and antifibrotic potential. The therapeutical responses to colchicine in randomised clinical trials were inconsistent.
研究目的
To evaluate the beneficial and harmful effects of colchicine in patients with primary biliary cirrhosis.
检索策略
We identified trials through electronic searches of The Cochrane Hepato-Biliary Group Controlled Trials Register, The Cochrane Central Register of Controlled Trials on The Cochrane Library, MEDLINE, EMBASE (September 2003), and manual searches of bibliographies. We contacted authors of trials and pharmaceutical companies.
纳入排除标准
Randomised clinical trials comparing colchicine with any kind of control therapy were included irrespective of language, year of publication, and publication status.
资料收集与分析
The primary outcomes were the number of deaths and the number of death and/or patients who underwent liver transplantation. Dichotomous outcomes were reported as relative risk (RR) with 95% confidence interval (CI). We examined intervention effects by using both a fixed effect model and a random effects model. Heterogeneity was investigated by subgroup analyses and sensitivity analyses.
主要结果
Eleven randomised clinical trials involving 716 patients with primary biliary cirrhosis fulfilled the inclusion criteria. No significant differences were detected between colchicine and placebo/no intervention on the number of deaths (RR 1.21, 95% CI 0.71 to 2.06), the number of deaths and/or patients who underwent liver transplantation (RR 1.00, 95% CI 0.67 to 1.49), liver complications, liver biochemical variables, liver histological measurements, and adverse events. Trial methodology was generally low and some trials had high drop-out rate. A best-worst-case-scenario analysis showed no significant effect of colchicine on mortality (RR 0.59, 95%CI 0.30 to 1.15), while a worst-best-case-scenario analysis showed a significant detrimental effect of colchicine on mortality (RR 2.28, 95% CI 1.17 to 4.44). Colchicine significantly decreased the number of patients without improvement of pruritus (RR 0.75, 95% CI 0.65 to 0.87). However, this estimate was based on only 156 patients from three trials. The effect of the combined treatment with ursodeoxycholic acid was not significantly different from that of colchicine alone.
作者结论
We did not find evidence either to support or refute the use of colchicine for patients with primary biliary cirrhosis. As we are not able to exclude a detrimental effect of colchicine, we suggest that it is only used in randomised clinical trials.
