1 Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, Georgia, USA; Winship Cancer Institute of Emory University, Atlanta, Georgia, USA.
2 Winship Cancer Institute of Emory University, Atlanta, Georgia, USA; Department of Urology, Emory University School of Medicine, Atlanta, Georgia, USA.
3 Department of Hematology and Medical Oncology and Department of Pharmacology, Emory University School of Medicine, Atlanta, Georgia, USA; Winship Cancer Institute of Emory University, Atlanta, Georgia, USA.
Bilen et al. respond to the letter by Köstek and Demir, agreeing that a deeper understanding of new biomarkers to evaluate immunotherapy outcome is necessary.