KLK3 and bone metastasis: The characteristics of the included studies of BAT are summarized here (Table 1), such as the type of study, sample size enrolled, time of BAT treatment, and disease stage of the enrolled patients; the baseline characteristics of the included patients (Table 2), such as baseline PSA level, bone metastasis, ECOG score, and Gleason score at the time of pathological diagnosis of the patients enrolled in each study.