Ciara Mageean has had to withdraw from her spot at the commentary table on RTE for the European Athletics Championships due to side effects from chemotherapy to treat her stage 4 bowel cancer. Ciara Mageean. This latest news comes as the champion middle-distance runner, who is also planning her wedding for later this year, continues her treatment for stage-four bowel cancer. Ciara Mageean. Ciara Mageean.