Published online Mar 14, 2015. doi: 10.3748/wjg.v21.i10.3005
Peer-review started: July 28, 2014
First decision: August 15, 2014
Revised: September 4, 2014
Accepted: November 7, 2014
Article in press: November 11, 2014
Published online: March 14, 2015
Processing time: 234 Days and 19 Hours
AIM: To evaluate clinical response to initial corticosteroid (CS) treatment in Chinese ulcerative colitis patients (UC) and identify predictors of clinical response.
METHODS: Four hundred and twenty-three UC patients who were initially treated with oral or intravenous CS from 2007 to 2011 were retrospectively reviewed at eight inflammatory bowel disease centers in China, and 101 consecutive cases with one-year follow-up were analyzed further for clinical response and predictors. Short-term outcomes within one month were classified as primary response and primary non-response. Long-term outcomes within one year were classified as prolonged CS response, CS dependence and secondary non-response. CS refractoriness included primary and secondary non-response. Multivariate analyses were performed to identify predictors associated with clinical response.
RESULTS: Within one month, 95.0% and 5.0% of the cases were classified into primary response and non-response, respectively. Within one year, 41.6% of cases were assessed as prolonged CS response, while 49.5% as CS dependence and 4.0% as secondary non-response. The rate of CS refractoriness was 8.9%, while the cumulative rate of surgery was 6.9% within one year. After multivariate analysis of all the variables, tenesmus was found to be a negative predictor of CS dependence (OR = 0.336; 95%CI: 0.147-0.768; P = 0.013) and weight loss as a predictor of CS refractoriness (OR = 5.662; 95%CI: 1.111-28.857; P = 0.040). After one-month treatment, sustained high Sutherland score (≥ 6) also predicted CS dependence (OR = 2.347; 95%CI: 0.935-5.890; P = 0.014).
CONCLUSION: Tenesmus was a negative predictor of CS dependence, while weight loss and sustained high Sutherland score were strongly associated with poor CS response.
Core tip: This is the first large-scale study across mainland China to evaluate clinical response to initial corticosteroid (CS) treatment in ulcerative colitis (UC) and identify predictors of clinical response, although recent studies have focused on the treatment outcomes of new drugs for UC. CS therapy continues to one of the most effective treatments in active UC. In view of the great difference between yellow and white races in CS response, and the lack of large-scale, systematic CS studies in yellow-race UC patients, this study was meaningful in understanding the efficacy of and risk factors for initial CS treatment in yellow-race UC patients.