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Kaplan-Meier estimates of the probability of progression-free survival (PFS) and overall survival (OS) in mCRPC. Survival differences were compared among those with <5 CTCs and 0 CTC-cluster, with ≥5 CTCs and 0 CTC-cluster, and with ≥5 CTCs and ≥1 CTC-clusters ((A) for PFS and (B) for OS).
