Table 2

Ki67 LIa scores in PSA failure and PSA non-failure

For each tumor, 500 cells were examined for nuclear staining for Ki67, and the mean percentage of cells expressing Ki67 (Ki67 LI) was calculated. The tissues were then classified according to Ki67 LI values.

Ki-67 LIFrequency (%) of patients exhibiting Ki67 LI in the indicated range
nPSA failurePSA non-failure
064 (66.67%)2 (33.33%)
1–4.9146 (42.9%)8 (57.1%)
5–9.954 (80%)1 (20%)
10–14.9117 (63.6%)4 (36.4%)
15–19.9109 (90%)1 (10%)
≥2097 (77.8%)2 (22.2%)
Total553718
  • a LI, labeling index; PSA, prostate-specific antigen.