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High HIF‐1/2α predicted a poor prognosis in ccRCC after adjustment of the NDRG1 expression. (A) Progression‐free survival and (B) overall survival among ccRCC patients with low or high protein levels of HIF‐1α by Kaplan‐Meier analysis. (C) Progression‐free survival and (D) overall survival among ccRCC patients with low or high protein levels of HIF‐2α by Kaplan‐Meier analysis. The log rank P‐value is reported
