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Figure 7. Outcomes of immuno-infiltration analysis combined with the FRG recurrence index risk score in TCGA prostate cancer patients. (A) Differences in immune infiltration between high- and low-risk FRG index prostate cancer cohorts. (B-G) Based on the FRG recurrence index risk score and the infiltration levels of specific immune cell types, TCGA prostate cancer patients were divided into four cohorts: 1. high FRG index risk and high immune cell infiltration; 2. high FRG index risk and low immune cell infiltration; 3. low FRG index risk and high immune cell infiltration; 4. low FRG index risk and low immune cell infiltration. Kaplan-Meier analyses comparing relapse-free survival probabilities among the four groups are presented. *P < 0.05, ***P < 0.001.