Prof. Seamus O'Reilly

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Clinical Professor, Consultant Medical Oncologist

Prof Seamus O’Reilly BSc MD PhD FRCPI- is consultant medical oncologist at Cork-Mercy and South Infirmary Victoria University Hospitals. A graduate of University College Galway, he completed medical oncology training at Johns Hopkins Hospital, Baltimore, MD where he was subsequently Assistant Professor in Medical Oncology. During fellowship training there he completed a PhD in Clinical Investigation and focused on Cancer Pharmacology in his research. He is vice clinical lead at Cancer Trials Ireland, a founding trustee and co-Chairperson Cork ARC Cancer Support House and was National Specialty Director in Medical Oncology at the Royal College of Physicians from 2013-2021.


Prof. O'Reilly is currently leading undergraduate research projects in survivorship (prevention, oncofertility) and therapeutics including acceptance of biosimilars among patients and healthcare providers and the impact of expanded access programs in cancer therapy. At post graduate level ongoing research projects include the impact of the May 2021 cyberattack on cancer services and clinical trials, the mapping of medicolegal claims on contemporaneous breast cancer care, and an assessment of the experience of  emigrants with breast cancer care. In response to the COVID-19 pandemic he is leading a national study of non-national doctors in Ireland in association with Cork University Business School. 

As Vice Clinical Lead in Cancer Trials Ireland Prof. O'Reilly is an active investigator in cancer trials at Cork University Hospital (CUH) with an emphasis on breast and gynaecologic cancers and is Principal Investigator of a Phase I trial of Lithium as an autophagy enhancer with chemotherapy for gastrointestinal cancers. Additional studies include an assessment of the role of metronomic chemotherapy in patients with metastatic breast cancer.

Cancer Research @UCC

4th floor, Western Gateway Building , Western Road, Cork