Dr. Niki Gavrielatou is a Medical Oncology Fellow at the 2nd Propaedeutic Internal Medicine Clinic and Oncology Research Unit of “Attikon” University General Hospital in Athens, Greece. She previously served as a Postdoctoral Associate in the Rimm Laboratory at Yale School of Medicine, Department of Pathology, New Haven, CT, USA, where she contributed extensively to translational immuno-oncology research.

Her clinical and scientific work centers on head and neck cancer, immunotherapy biomarkers, spatial 
biology, and mechanisms of response and resistance to immune checkpoint blockade. Dr. Gavrielatou earned her PhD from the National and Kapodistrian University of Athens, completing a dissertation on predictive biomarkers of immunotherapy response in head and neck squamous cell carcinoma. 
She has authored numerous peer-reviewed publications in leading oncology and translational research journals, including first-author manuscripts in Annals of Oncology and Clinical Cancer Research. Her work spans high-plex spatial profiling, tumor–immune interactions, digital pathology, 
B-cell biology, and biomarker development in head and neck cancer.