Good morning LR. Didn't make much sense to me either until I realized prophylactic pretreatment with B-OM is designed into the trial protocol.
"This study will examine whether daily oral rinses with a solution containing brilacidin will prevent the occurrences of OM or lessen the severity of OM if it occurs. Patients will use an oral rinse 3 times daily for up to seven weeks during chemoradiation for head and neck cancer." https://www.clinicaltrials.gov/ct2/show/NCT02324335?term=cellceutix&rank=2
They are looking to administer B-OM upon initial treatment for cancer.
As always, in my opinion only. Do your own due diligence!