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Recruiting Phase 2 NCT04641247

NCT04641247 A Long-term Treatment Extension Study of Niraparib in Participants Who Completed a Prior GlaxoSmithKline/TESARO-sponsored Niraparib Study

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Clinical Trial Summary
NCT ID NCT04641247
Status Recruiting
Phase Phase 2
Sponsor GlaxoSmithKline
Condition Ovarian Neoplasms
Study Type INTERVENTIONAL
Enrollment 37 participants
Start Date 2021-04-16
Primary Completion 2026-12-28

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age N/A
Study Type INTERVENTIONAL
Interventions
Niraparib

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

In Phase 2, researchers evaluate early signs of effectiveness. You may be randomized to receive the active treatment or a comparator. Monitoring continues closely.

This trial targets 37 participants in total. It began in 2021-04-16 with a primary completion date of 2026-12-28.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

This is a global extension study to provide continued access to niraparib and further characterize the long-term safety of niraparib treatment in participants who are currently receiving treatment with niraparib within GlaxoSmithKline/TESARO-sponsored studies (NCT01847274, NCT02354586, NCT01905592, NCT03308942, NCT02657889) that has fulfilled the requirements for the primary objective.

Eligibility Criteria

Inclusion Criteria: * Participant is able to understand the study procedures and agrees to participate in the study by providing written informed consent. * Participant is willing and able to comply with scheduled visits, treatment plans, and any other study procedures. * Participant is currently receiving treatment with niraparib (as monotherapy or in combination) in a GlaxoSmithKline/TESARO-sponsored study that has fulfilled the requirements for the primary objective. * Participant is currently benefiting from treatment with niraparib as assessed by the Investigator according to the parent study protocol requirements. * Participants of childbearing potential who are sexually active and their partners must agree to the use of an effective form of contraception throughout their participation during study treatment through 180 days after last dose of study drug. Exclusion Criteria: * Participant has been permanently discontinued from niraparib treatment in the parent study for any reason. * Participant currently has unresolved toxicities for which niraparib dosing has been interrupted in the parent study. Participants meeting all other eligibility criteria may be enrolled once toxicities have resolved to allow niraparib treatment to resume. * Participant is pregnant or is expecting to conceive children while receiving study drug or for up to 180 days after the last dose of study drug. Participant is breastfeeding or is expecting to breastfeed within 30 days of receiving the final dose of study drug (women should not breastfeed or store breastmilk for use during niraparib treatment and for 30 days after receiving the final dose of study treatment).

Contact & Investigator

Central Contact

US GSK Clinical Trials Call Center

✉ GSKClinicalSupportHD@gsk.com

📞 877-379-3718

Principal Investigator

GSK Clinical Trials

STUDY DIRECTOR

GlaxoSmithKline

Frequently Asked Questions

Who can join the NCT04641247 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, studying Ovarian Neoplasms. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT04641247 trial and what does that mean for participants?

Phase 2 trials evaluate whether the treatment shows signs of effectiveness while continuing to monitor safety. More participants are enrolled than in Phase 1 to help refine the treatment protocol.

Is NCT04641247 currently recruiting?

Yes, NCT04641247 is actively recruiting participants. Contact the research team at GSKClinicalSupportHD@gsk.com for enrollment information.

Where is the NCT04641247 trial being conducted?

This trial is being conducted at Tucson, United States, Encinitas, United States, Los Angeles, United States, Whittier, United States and 11 additional locations.

Who is sponsoring the NCT04641247 clinical trial?

NCT04641247 is sponsored by GlaxoSmithKline. The principal investigator is GSK Clinical Trials at GlaxoSmithKline. The trial plans to enroll 37 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: April 2026  ·  Data Methodology