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King Saud University Medical City, Riyadh, Saudi Arabia
Saif Abed Aljabab is a Saudi radiation oncologist, Assistant Professor, and Consultant in Radiation Oncology at King Saud University (KSU) in Riyadh, Saudi Arabia. He specializes in advanced radiation treatment, with particular expertise in proton therapy, breast cancer, central nervous system (CNS) tumors, head and neck malignancies, orbital tumors, and other complex cancers. His official KSU faculty profile identifies him as an Assistant Professor and Consultant at King Saud University Medical City.
He also serves as Director of the Business Unit at the KSU College of Medicine, where his responsibilities include developing strategic partnerships, coordinating academic and clinical services, and supporting external collaborations.
Dr. Aljabab earned his medical degree (MBBS) from King Saud University School of Medicine in Riyadh.
He subsequently completed his residency in Radiation Oncology at the University of Ottawa in Canada and undertook further fellowship training at the University of Washington, where he developed expertise in advanced radiation techniques and particle therapy.
He is board-certified in both Canada and the United States, holding the FRCPC qualification from the Royal College of Physicians and Surgeons of Canada and DABR certification from the American Board of Radiology. He also holds an MBA, with additional training in business administration and entrepreneurship.
His clinical interests include:
Roswell Park's professional profile specifically identifies breast cancer, head and neck cancer, skull-base tumors, ocular melanoma, and lung cancer among his areas of expertise, with special interests including particle therapy, re-irradiation, immunotherapy, and oligometastatic disease.
Dr. Aljabab has published research in peer-reviewed medical journals, particularly in radiation oncology and advanced radiotherapy.
One of his notable publications investigated the use of combined neutron and proton therapy for advanced salivary gland tumors, reflecting his interest in particle-based radiation treatment. The study was published in Cureus in 2021 and included researchers from the University of Washington and King Saud University.
In 2024, he was the corresponding author of a case report on a novel split-course high-dose palliative radiotherapy regimen for locally advanced sinonasal cancer. The research was conducted through the Radiation Oncology Unit at KSU and the Oncology Center at King Saud University Medical City.
He has also contributed to research examining proton therapy for pediatric medulloblastoma, including approaches aimed at reducing radiation exposure to critical structures such as the hypothalamic-pituitary axis and hippocampus.
Dr. Aljabab is an active participant in regional oncology education. He has been listed as faculty at several oncology and radiation-oncology conferences in Saudi Arabia and the UAE. For example, he was a speaker at the 1st UAE & GCC Radiation Oncology Annual Conference 2025 and has participated in Emirates Oncology Society activities.
For the 2026 SSBES Annual Conference, he is scheduled to speak during the Breast 1 session on “De-escalation of Loco-regional Radiation Therapy in DCIS, Early Breast Cancer and Post-NACT, and in Elderly Patients.” This topic aligns closely with his specialization in breast cancer radiotherapy and evidence-based radiation treatment.
Saudi Society of Breast & Endocrine Surgery (SSBES)
Saudi Society of Breast & Endocrine Surgery (SSBES)
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