Browns owners Dee and Jimmy Haslam have donated $12.5 million toward blood cancer research and treatment. The donation includes $10 million to the Oxford-Harrington Rare Disease Centre in England for research and drug development focused on chronic lymphocytic leukemia (CLL) and other rare blood cancers. The other $2.5 million will go to Cleveland’s University Hospitals Seidman Cancer Center, which will establish an endowed chair in CLL research and an innovation fund toward driving advancements in care. Dee Haslam was diagnosed with CLL in 2021.