Subset of 22 patients whose entire radiotherapy course could be evaluated owing to the availability of the paired data for all ICB fractions within their respective HDR regimen.

Due to the 12 omitted fractions, the paired information in 8 out of 30 patients in the study was not available and could not be analyzed. Therefore, a subset of 22 patients was left with paired data of all ICB fractions within their respective HDR regimen for the evaluation of their entire course of radiotherapy (EBRT + ICB), individually.