On Oct. 10, 2022, the Mayo Clinic announced that The Fred C. and Katherine B. Andersen Foundation of Bayport, Minnesota, has made a $100 million multiyear commitment to support the expansion of Mayo Clinic’s proton beam facility in Rochester that will nearly double appointment access for patients in need. In recognition of this gift, Mayo Clinic will name this new facility the Fred C. and Katherine B. Andersen Building.ﾠ

Extensive research has proven the benefits of proton beam therapy for patients with certain types of cancer. Mayo Clinic researchers have been involved in more than 300 papers published on proton therapy, and research is ongoing.

Mayo Clinic first began offering proton beam therapy in 2015, when construction of the Jacobson Building in Rochester was completed. Since then, the program has routinely approached its appointment capacity of 1,200 patients per year.