Aleksandar Gerasimov was born in 1987 in Vratsa, Bulgaria. Graduated Medical university Sofia in 2012 with honors. Started working in the Clinic of Medical oncology of the University Hospital for Active Treatment in Oncology, Sofia in 2012 as a scientific assistant. Started his post-graduate study in Medical oncology in 2013. Scientific interests in the fields of prostate cancer, breast cancer, neuroendocrine tumors and immuno oncology. Specialized NET in Uppsala, Sweden in 2014 and Jerusalem, Israel in 2017. Internship in Breast cancer center of excellence in Instituto Europeo di Oncologia, Milan, Italy in 2016. Preparing dissertation for PHD for common biomarkers of prostate and breast cancer. Publications in Bulgarian scientific journals in treatment of metastatic castration-resistant prostate cancer. Co-autor of practice guideline for nurses and students in oncology and handbook of Medical oncology.