CCR9 and non-small cell lung carcinoma: There are no differences between the high or low expressors with the baseline levels of T-helper CCR9+ cells and the objective response rate in the NSCLC study group (odds ratio 0.50, CI 95% 0.13–1.92, p = 0.31), but the logistic regression shows a trend towards significance (33.33% response rate in high expressors vs. 50% in low expressors).