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Contact Information

Mark Clemons, MB BS, BMedSci, MSc, MD, FRCP, FRCPC

Division of Medical Oncology
The Ottawa Hospital Cancer Centre (Box 912)
501 Smyth Road
Ottawa ON
K1H 8L6

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Researchers at The Ottawa Hospital awarded 19 CIHR grants worth more than $12 million
July 20, 2022 - These projects will advance science and improve health in areas such as cancer, neuroscience, regenerative medicine, autism, Kabuki Syndrome, kidney disease, patient engagement, blood transfusions, sepsis, surgery, anesthesia, plasma donation, ...
A “smorgasbord” of cancer research, treatment, and life philosophy
March 18, 2022 - Dr. Mark Clemons’ keen sense of humour and sharp wit have earned him an enduring and respected reputation among cancer patients at The Ottawa Hospital, where he is a medical oncologist. His patients regularly comment on the positive difference ...
A patient’s dying wish to move medical science forward
December 9, 2021 - Despite battling breast cancer, Paula Helmer found a driving ambition and raised her voice in support of clinical trials.
Personalized approach reduces nausea in breast cancer patients
April 15, 2021 - Cancer chemotherapy often causes nausea and vomiting, but a new clinical trial shows that a personalized approach can help. The trial, led by Dr. Mark Clemons, used a calculator his team developed to identify breast cancer patients with a high ...
Breast cancer patients benefit from Ottawa-based study
December 3, 2020 - There is such deep love in Gina Mertikas-Lavictoire’s eyes when she looks at her three young children. But there is something else, too: fear. Fear that one or even both of her daughters will develop the same aggressive breast cancer she’s had. ...
Bone-modulating drugs can be given less often during cancer treatment, reducing side-effects and saving time and money
November 28, 2020 - When cancer spreads to the bones, it can cause pain, reduce mobility and increase the risk of fractures. Bone modulating drugs can help, but a new study suggests that to maximize the value of these drugs, it may be better to give them less often.
Fewer hospital visits, safer care, less cost: study changing breast cancer treatment around the world
October 15, 2020 - A new study published in Annals of Oncology shows that a drug commonly used to prevent infections in breast cancer patients can safely be given less often, meaning fewer hospital visits, fewer side effects and reduced treatment costs.
Unexpected breast cancer diagnosis leads patient down an uncertain path
October 1, 2020 - During her treatment, Annette participated in several clinical trials through The Ottawa Hospital's innovative REthinking Clinical Trials (REaCT) program. This program engages patients and their loved ones in research every step of the way, ...
Researchers and research staff honoured for outstanding work in cancer clinical trials, emergency medicine, cell sorting and tissue collection
April 29, 2020 - A number of outstanding researchers and research teams have been honoured through The Ottawa Hospital’s Excellence Awards program for 2020. They include the Rethinking Clinical Trials (REaCT) program, Senior Clinical Research Associate in ...
Every day was a gift for Jillian O’Connor
February 4, 2019 - Eighteen weeks into her third pregnancy, Jillian O’Connor was diagnosed with breast cancer and given less than two years to live. In February 2019, she celebrated the fourth birthday of her healthy baby boy. She lived life to the fullest and ...
Trial opens door for new kind of drug for advanced breast cancer
June 14, 2017 - Hormone-based therapy has revolutionized the treatment of breast cancer, but when these therapies fail, patients often have few other options. Dr. Mark Clemons and colleagues played an important role in an international clinical trial that has ...
New calculator could reduce nausea and vomiting associated with cancer treatment
April 21, 2017 - Nausea and vomiting are among the most feared side effects of cancer chemotherapy, affecting up to 40 percent of patients. A new calculator developed by Dr. George Dranitsaris and Dr. Mark Clemons and their colleagues could help prevent this. The ...
New approach to clinical trials could revolutionize cancer care
February 23, 2017 - Yasemin Heinbecker was a career diplomat used to working 10-hour days when she received a diagnosis last fall that stopped her busy life in its tracks. Like 25,000 other Canadian women every year, she was diagnosed with breast cancer and ended up ...
Ottawa team pioneers new approach for cancer clinical trials
September 28, 2016 - What is the most efficient way to answer the most important questions to improve care for cancer patients? Drs. John Hilton, Mark Clemons and Dean Fergusson got a group of Ottawa researchers together to answer this question and came up eight ...
Unnecessary imaging for early stage breast cancer costs Ontario at least $4.4M over five years
April 19, 2016 - One of the greatest fears upon cancer diagnosis is that the cancer may have spread or metastasized throughout the body. The instinct among patients and physicians is often to look for more cancer using a multitude of scans. But for people with ea
Personalized anti-nausea therapy better for cancer patients, Ottawa researchers
November 12, 2015 - A new research study led by Dr. Mark Clemons, oncologist and associate cancer research scientist at The Ottawa Hospital, has shown that a personalized approach to treating one of the most expected side-effects of chemotherapy is far more effective th
Jean Maroun Scholarship recognizes resident’s research to help manage chemotherapy side effects
July 22, 2015 - Post-graduate medical oncologist Dr. Terry Ng is the first recipient of the Jean Maroun Resident Research Scholarship, which will be presented annually to a resident whose research results have the potential to change practice. Dr. Ng’s research f
Study reveals widespread over-imaging in early stage breast cancer patients in Ontario
June 22, 2015 - Reducing unnecessary imaging could improve care and reduce costs Researchers at The Ottawa Hospital and the University of Ottawa have found that most Ontario women with early stage breast cancer are undergoing unnecessary imaging to determine
Breast cancer study among “Top 50 Most-Cited”
June 3, 2015 - The Journal of Clinical Oncology has included a study led by Dr. Mark Clemons among its 50 most cited articles published in 2012. The article shows that the molecular characteristics of an individual’s breast cancer can change as the cancer ...
Survey of health care providers and patients highlights need for standardization of use of the Breast Cancer drug, docetaxel.
May 20, 2015 - Drs. Mark Clemons and Brian Hutton have published the results of a survey on the use of steroids to prevent adverse reactions in patients receiving docetaxel chemotherapy, one of the most commonly used drugs in breast cancer. The article, publishe
Neither oral nor intravenous Vitamin C improve cancer treatment
February 10, 2015 - Dr. Mark Clemons recently published a comprehensive review of existing studies to determine whether there is scientifically compelling evidence to support the use of Vitamin C in cancer treatment, either to enhance chemotherapy or reduce its toxicity
New research shows that second biopsy should be considered for some breast cancer patients
November 28, 2011 - Breast cancer therapy has become highly personalized over the last decade, with treatment decisions now routinely based on the presence or absence of certain biomarkers in biopsied tumour samples. A new study led by Dr. Mark Clemons and Dr. Eitan Ami