Individual Phenotype Analysis in Patients With Castration-Resistant Prostate Cancer With CellSearch® and Flow Cytometry

Inclusion Criteria: * Histologically confirmed adenocarcinoma or prostate * Ongoing effective androgen deprivation therapy (testosterone ≤ 50 ng/mL) * Castration-Resistant prostate cancer patient : defined as a minimum of 3 rising PSA values assessed and/or radiological progress confirmed by RECIST and PCWG2 * Patient who signed informed consent Exclusion Criteria: * Severe disorders of coagulation * Major skin lesion on iliac crests * Allergies in local anesthetics * Psychological instability or psychiatric histories * Uncertain follow-up and distant residence * History of another invasive cancer and hematologic disease * Patient deprived of their freedom by court or administrative order * Revocation of consent