Biography
Dr Gishan Ratnayake is committed to providing exceptional, patient-centred care in the field of radiation oncology using the latest treatment techniques and technology. He believes in treating each patient as an individual, taking into account their unique needs and concerns, and working collaboratively with them to achieve the best possible outcome.
Dr Gishan Ratnayake is a radiation oncologist at Icon Cancer Centre Greenslopes and Icon Cancer Centre Auchenflower. Dr Ratnayake completed his Bachelor of Medicine, Bachelor of Surgery (MBBS) at Monash University in 2009. He subsequently commenced specialist radiation oncology training across Queensland’s tertiary hospital network. During his training, Dr Ratnayake undertook research as a clinician scientist and was awarded a Master of Philosophy at the University of Queensland.
In 2018, Dr Ratnayake became a fellow at the Royal Australian and New Zealand College of Radiologists (FRANZCR) and undertook further training in stereotactic radiation therapy at the Alfred Hospital in Melbourne. He maintains a keen interest in clinical research and trials, particularly in the area of radiobiology. Dr Ratnayake has a number of peer reviewed publications and has presented his research work at both national and international conferences. Alongside his practice at Icon, he is a radiation oncologist at the Princess Alexandra Hospital and a senior lecturer at the University of Queensland’s School of Medicine.
His clinical experience covers a wide range of solid tumour malignancies, with a special interest in breast cancer, lung cancer, prostate cancer, skin cancer and head and neck cancer. He is also highly experienced in the use of stereotactic radiation therapy to achieve the best possible outcomes for his patients.
Publications
Ratnayake, G., Reinwald, S., Edwards, J., Wong, N., Yu, D., Ward, R., Smith, R., Haydon, A., Au, P. M., van Zelm, M. C., & Senthi, S. (2022). Blood T-cell profiling in metastatic melanoma patients as a marker for response to immune checkpoint inhibitors combined with radiotherapy. Radiotherapy and oncology: journal of the European Society for Therapeutic Radiology and Oncology, 173: 299–305.
Ratnayake, G., Reinwald, s., Shackleton, M., Moore, M., Voskoboynik, M., Ruben, J., Van Zelm, M., Yu, D., Ward, R., Smith, R., Haydon, A. & Senthi, S. (2021) Stereotactic radiotherapy combined with immunotherapy against metastatic melanoma: Long term results of a phase I clinical trial. International Journal of Radiation Oncology, Biology and Physics, 108(1): 150-156.
Ratnayake G, Oh T, Mehta R, et al. Long-term treatment outcomes of patients with primary optic nerve sheath meningioma treated with stereotactic radiotherapy. Journal of Clinical Neuroscience. 2019;68:162-167.
Ratnayake G, Shanker M, Roberts K, et al. Prior or concurrent radiotherapy and nivolumab immunotherapy in non-small cell lung cancer. Asia-Pacific Journal of Clinical Oncology. 2020;16(1):56-62.
Ratnayake GS, McNab AA, Dally MJ, Zajarski C, Senthi S, Ruben JD. Fractionated Stereotactic Radiotherapy for Cavernous Venous Malformations of the Orbital Apex. Ophthalmic Plastic and Reconstructive Surgery. 2019;35(4):322-325.