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Clinical trialNCT05501548TerminatedPhase 2Interventional

Phase II Study of PARP Inhibitor Olaparib and IV Ascorbate in Castration Resistant Prostate Cancer

SponsorSidney Kimmel Comprehensive Cancer Center at Johns HopkinsEnrollment4Castration-resistant Prostate CancerProstate Cancer
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

This is a study to evaluate the safety and clinical activity of the combination of olaparib and high-dose IV ascorbate, as second or later line of therapy, in castration resistant prostate cancer patients with no known DNA repair gene mutations (DDRm). In brief, the primary endpoint is PSA50 response , defined by a 50% reduction in PSA from baseline . The secondary endpoints are assessing the PSA doubling time, radiographic and PSA PFS, safety and tolerability as defined by the incidence of grade 3 to 5 toxicities, and measuring overall survival.
clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a FindMyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

2 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • Sibley Memorial Hospital

    Washington D.C., District of Columbia, United States

  • Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins

    Baltimore, Maryland, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

Olaparib →
Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
30 Jun 2023
Primary completion
14 Oct 2024
Completion
14 Oct 2024
Last update posted
29 Jan 2025
Registered enrollment
4
Registry id
NCT05501548
clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; FindMyKOL does not interpret them.