Tumour GDF-15 Expression and Clinical Outcomes in Intermediate-Risk Metastatic Clear-Cell Renal Cell Carcinoma Treated with Second-Line Nivolumab - Orhun Akdogan; Betul Ogut; Osman Sutcuoglu; Melike Urganci; Burcu Ulas Kahya; Ipek Isik Gonul; Hatice Azra Begum Salimoglu; Tuba Ugur Tuzcu; Ozan Yazici; Ahmet Ozet; Nuriye Ozdemir (Current Oncology, 2026)