CONCLUSION: MeProCSS, consisting of routinely collected parameters prior to the start of chemotherapy, seems to effectively stratify patients with mCRPC into risk groups based on their metastatic burden, nutritional and inflammatory status. This model may guide treatment decisions and reveal a potentially often underestimated or overlooked urgency for additional measures as supportive palliative care in mCRPC patients. Further large and prospective studies are necessary for validation …