# A Study to Determine Frequency of DNA-repair Defects in Men With Metastatic Prostate Cancer

> **NCT03871816** · — · COMPLETED · sponsor: **Janssen Research & Development, LLC** · enrollment: 14532 (actual)

## Conditions studied

- Metastatic Prostate Cancer

## Interventions

- **OTHER:** Saliva, Blood, or and/or Archival Tumor Tissue Collection and Analysis

## Key facts

- **NCT ID:** NCT03871816
- **Lead sponsor:** Janssen Research & Development, LLC
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2019-04-22
- **Primary completion:** 2022-10-30
- **Final completion:** 2022-11-22
- **Target enrollment:** 14532 (ACTUAL)
- **Last updated:** 2023-12-11


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03871816

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03871816, "A Study to Determine Frequency of DNA-repair Defects in Men With Metastatic Prostate Cancer". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT03871816. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*