CDKN2A and dysplasia: Therefore, the expression of p16INK4a (Figure 1) and Ki-67 (Figure 2) were 100% in all squamous cell carcinoma and CIN2/3, for CIN1 the expression of p16INK4a and Ki-67 was 43%, and for non-dysplasia the expression of p16INK4a and Ki-67 was 14%.