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

An Open-Label, Multicenter, Long-term Treatment Extension Study in Subjects Who Have Completed a Prior GlaxoSmithKline/TESARO-Sponsored Niraparib Study and Are Judged by the Investigator to Benefit From Continued Treatment With Niraparib

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04641247
Enrollment
37
Registered
2020-11-23
Start date
2021-04-16
Completion date
2026-12-28
Last updated
2026-06-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Neoplasms, Ovarian Neoplasms

Keywords

Adverse events, Open-label extension, Parent study, Niraparib, Safety

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.

Interventions

DRUGNiraparib

Niraparib tablets or capsules will be given once a day via the oral route.

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Masking description

This will be an open-label study.

Intervention model description

Participants will receive niraparib once a day, continuously throughout each 90-day cycle.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

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).

Design outcomes

Primary

MeasureTime frameDescription
Number of participants with adverse events (AEs), serious adverse events (SAEs) and AEs of special interest (AESI)Up to 5 yearsAEs, SAEs and AESI will be collected.
Number of participants with clinically significant changes in Eastern Co-operative Oncology Group (ECOG) performance statusUp to 5 yearsThe performance status will be assessed using ECOG scale, where Grade 0 (fully active), Grade 1 (restricted in physically strenuous activity), Grade 2 (ambulatory and capable of all self-care), Grade 3 (capable of only limited self-care) and Grade 4 (completely disabled). Number of participants with clinically significant changes in ECOG performance status will be summarized.
Number of participants with clinically significant changes in hematology and clinical chemistry parametersUp to 5 yearsBlood samples will be collected for the analysis of hematology and clinical chemistry parameters.
Number of participants with clinically significant changes in vital signsUp to 5 yearsNumber of participants with clinically significant changes in vital signs will be assessed.
Number of participants with clinically significant changes in physical examinationUp to 5 yearsNumber of participants with clinically significant changes in physical examination will be assessed.
Number of participants with use of concomitant medicationsUp to 5 yearsNumber of participants using concomitant medications will be assessed.

Countries

Austria, Canada, Denmark, France, Israel, Italy, Spain, United States

Contacts

CONTACTUS GSK Clinical Trials Call Center
GSKClinicalSupportHD@gsk.com877-379-3718
CONTACTEU GSK Clinical Trials Call Center
GSKClinicalSupportHD@gsk.com+44 (0) 20 89904466
STUDY_DIRECTORGSK Clinical Trials

GlaxoSmithKline

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 25, 2026