IL6R and cancer: The pooled OR for development of any cancer was 0·42 (95% CI 0·06–2·88; four cases and 1196 controls) for tocilizumab treatment in randomised trials, and was 0·98 (95% CI 0·93–1·03; 5376 cases and 57 123 controls) for the IL6R rs7529229 variant.