Table 3 Semi-quantitative scoring system of p53 and Ki-67 immunostaining
Percentage of immunoreactive cells | Score | p53 and Ki-67 protein overexpression assessment | Reference |
|---|---|---|---|
No reactivity | 0 | Negative | Zigeuner et al. [43] |
Less than 10% | 1 | Negative | |
10–25% | 2 | Positive | |
26–50% | 3 | Positive | |
51–75% | 4 | Positive | |
76–90% | 5 | Positive | |
More than 90% | 6 | Positive |