My name is Omar Wahdadeen Qasim, and I am a master’s degree student at University of Kirkuk, College of Science. My research focuses on radiation biology and computational physics using Geant4-DNA. My current study is entitled Impact of Gamma Radiation on DNA of Fibroblast Cells Using Geant4-DNA. I investigate the effects of gamma radiation on fibroblast cell DNA through Monte Carlo simulations. My scientific interests include DNA damage assessment, medical physics, and radiation-induced biological effects.