Renal clear cell carcinoma and adjacent noncancerous renal samples were obtained by radical nephrectomy from the First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital) between 2005 and 2018. All diagnoses were confirmed by senior pathologists independently. Informed consent from all patients was acquired in the study. The study design and protocol were approved by the ethics committee of the First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital). IHC assays were performed as previously described (49 (link), 50 (link)). Briefly, the primary antibody was diluted as follows: anti-PDHB (1:100, Abcam, USA).
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