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  • Title: Correlations of Ki-67 and PCNA to DNA ploidy, S-phase fraction and survival in uveal melanoma.
    Author: Karlsson M, Boeryd B, Carstensen J, Frånlund B, Gustafsson B, Kågedal B, Sun XF, Wingren S.
    Journal: Eur J Cancer; 1996 Feb; 32A(2):357-62. PubMed ID: 8664054.
    Abstract:
    In 79 patients with uveal melanoma, the tumours were investigated by DNA flow cytometry and immunohistochemical staining of PCNA and Ki-67. S-phase as a continuous variable was significantly correlated with Ki-67 (P = 0.033), but not with PCNA. DNA ploidy was not correlated with either of the two antigens. Ki-67 was significantly correlated with histopathological type (P < 0.001) and tumour size (P < 0.001). Large tumours and epithelioid cell type were associated with a high frequency of Ki-67 positive cells. A high level of Ki-67 positivity (> or = 6.5%) was also associated with a shorter survival (P = 0.0037), and when adjusted for DNA ploidy, histopathological type and tumour size, Ki-67 in the multivariate analysis remained an important prognostic factor (P = 0.017).
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