Interestingly, although both measurements yielded comparable rates in terms of antitumoral effects (response vs non-response) in vivo, we did not find a significant association when the relative reductions in tumor size (mm) were correlated with the relative reduction in Ki67 expression (%) (r = 0.1797, p = 0.3176; Kendall tau, data not shown). Here, MKI67 is linked to neoplasm.