Similarly, there was no significant difference in the median sEGFR levels in relation to the categories of histological tumour grade (Kruskal–Wallis p = 0.996), Ki67 (< or ≥14%) (Mann–Whitney U p = 0.518), tumour size (Kruskal–Wallis p = 0.246), lymph node metastasis (Kruskal–Wallis p = 0.372) nor stage (Kruskal–Wallis p = 0.822). Here, MKI67 is linked to neoplasm.