BACKGROUND: Interleukin-6 has important lymphoid bioregulatory effects, and serum levels of interleukin-6 are often elevated in patients with lymphoma. OBJECTIVE: To determine the relation between serum levels of interleukin-6 before treatment and outcome in patients with diffuse large-cell lymphoma. DESIGN: Retrospective cohort analysis with multivariate analysis. SETTING: Tertiary referral center. PARTICIPANTS: 118 untreated patients with diffuse large-cell lymphoma who were enrolled in frontline chemotherapy protocols and 45 healthy controls. MEASUREMENTS: Serum levels of interleukin-6 were measured by using a sensitive enzyme-linked immunosorbent assay. Levels below the upper limit of the range for controls were considered normal. Outcomes were complete response, failure-free survival, and overall survival. RESULTS: Serum levels of interleukin-6 were higher in patients with lymphoma (median, 4.6 pg/ml [range, undetectable to 224 pg/mL]) than in controls (median, undetectable [range, undetectable to 4.3 pg/mL]) (P = 0.009). The complete response rate was 95% for persons with normal interleukin-6 levels and 55% for persons with high interleukin-6 levels (P = 0.001). Patients with high interleukin-6 levels had inferior failure-free and overall survival rates (P < 0.001 for both comparisons). The actuarial 4-year failure-free and overall survival rates were 72% and 85%, respectively, for persons with normal interleukin-6 levels and 37% and 46%, respectively, for persons with high interleukin-6 levels. In multivariate analysis, interleukin-6 was selected as the most significant predictor of complete response and failure-free survival. Failure-free and overall survival of patients stratified according to International Prognostic Index score could be further stratified by interleukin-6 level (P < or = 0.03 for all comparisons). CONCLUSION: In patients with diffuse large-cell lymphoma, serum interleukin-6 levels are an independent prognostic factor for complete response and failure-free survival.
BACKGROUND:Interleukin-6 has important lymphoid bioregulatory effects, and serum levels of interleukin-6 are often elevated in patients with lymphoma. OBJECTIVE: To determine the relation between serum levels of interleukin-6 before treatment and outcome in patients with diffuse large-cell lymphoma. DESIGN: Retrospective cohort analysis with multivariate analysis. SETTING: Tertiary referral center. PARTICIPANTS: 118 untreated patients with diffuse large-cell lymphoma who were enrolled in frontline chemotherapy protocols and 45 healthy controls. MEASUREMENTS: Serum levels of interleukin-6 were measured by using a sensitive enzyme-linked immunosorbent assay. Levels below the upper limit of the range for controls were considered normal. Outcomes were complete response, failure-free survival, and overall survival. RESULTS: Serum levels of interleukin-6 were higher in patients with lymphoma (median, 4.6 pg/ml [range, undetectable to 224 pg/mL]) than in controls (median, undetectable [range, undetectable to 4.3 pg/mL]) (P = 0.009). The complete response rate was 95% for persons with normal interleukin-6 levels and 55% for persons with high interleukin-6 levels (P = 0.001). Patients with high interleukin-6 levels had inferior failure-free and overall survival rates (P < 0.001 for both comparisons). The actuarial 4-year failure-free and overall survival rates were 72% and 85%, respectively, for persons with normal interleukin-6 levels and 37% and 46%, respectively, for persons with high interleukin-6 levels. In multivariate analysis, interleukin-6 was selected as the most significant predictor of complete response and failure-free survival. Failure-free and overall survival of patients stratified according to International Prognostic Index score could be further stratified by interleukin-6 level (P < or = 0.03 for all comparisons). CONCLUSION: In patients with diffuse large-cell lymphoma, serum interleukin-6 levels are an independent prognostic factor for complete response and failure-free survival.
Authors: Xin Shelley Wang; Qiuling Shi; Loretta A Williams; Li Mao; Charles S Cleeland; Ritsuko R Komaki; Gary M Mobley; Zhongxing Liao Journal: Brain Behav Immun Date: 2010-03-29 Impact factor: 7.217
Authors: Darren R Brenner; Dominique Scherer; Kenneth Muir; Joellen Schildkraut; Paolo Boffetta; Margaret R Spitz; Loic Le Marchand; Andrew T Chan; Ellen L Goode; Cornelia M Ulrich; Rayjean J Hung Journal: Cancer Epidemiol Biomarkers Prev Date: 2014-06-24 Impact factor: 4.254