The aim of this observational study is to evaluate the clinical outcomes of treatment with docetaxel, ARTA (alone or in combination) or with radiotherapy on the primary tumor for mCSPC, in an unselected population, in clinical practice

Inclusion Criteria:

1. histologically confirmed diagnosis of adenocarcinoma of the prostate, metastatic, not undergoing previous treatment (except hormone therapy initiated no more than 4-6 months prior to docetaxel) for metastatic disease
2. treatment with docetaxel, ARPI (alone or in combination) or with radiation therapy on the primary tumor in combination with ADT within normal clinical practice or expanded access programs initiated between January 2015 and December 2027.
3. availability of inpatient and/or outpatient medical records for clinical data collection

Exclusion Criteria:

1. histological diagnosis other than adenocarcinoma
2. patients who have received multiple lines of ADT for mCSPC
3. patients who have received docetaxel or ARTA for metastatic castration-resistant disease

All patients with mCSPC who initiated treatment with docetaxel, ARPI (alone or in combination) or with radiotherapy on the primary tumor in addition to ADT within clinical practice or expanded access programs in Italian hospitals from January 2015 to December 2027 will be studied.