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Niraparib

Phase 2

Ovarian Cancer Recurrent | Small molecule | Oncology |United Therapeutics Corporation|Last Updated: Jul 13, 2026

Target and mechanism

Molecular targetPARP2, PARP1
Target classInhibitor
ModalitySmall molecule

Also known as Niraparib oral capsule

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment42

FDA Designations

No designations recorded

Clinical trial landscape

Niraparib · 1 trial · 1 indication

Phase 2 1
NCT05990192SBRT Alone or Followed by Niraparib for Oligometastases or Oligoprogression in Ovarian Cancer Following PARPi TherapyOvarian Cancer Recurrent
RECRUITING42 Analytics
PHASE2RECRUITING
SBRT Alone or Followed by Niraparib for Oligometastases or Oligoprogression in Ovarian Cancer Following PARPi Therapy
Ovarian Cancer RecurrentUnlock trial analytics

Study Endpoints

Primary Endpoints

Progression free survival
The primary timepoint of most interest for PFS is at six months after trial entry

Progression free survival is defined as time from trial entry to evidence of progression of cancer at any site or death from any cause. Progression events should be imaging defined in all tumour types according to RECIST v1.1 criteria. Where SBRT specific consensus response assessment criteria exist for specific sites (e.g. spine), progression of SBRT treated lesions will be defined according to these guidelines.

Secondary Endpoints

Time to first subsequent systemic therapy
Time to first subsequent systemic therapy assessed up to 2 years after trial entry.
Time to first subsequent anti-cancer therapy
Time to first subsequent anti-cancer therapy assessed up to 2 years after trial entry.
Overall survival
The primary timepoint of interest for OS is at two years after trial entry.
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
SBRT followed by NiraparibOTHERSBRT treatment will commence within 7 days post trial entry and will be administered as detailed in the SOPRANO Radiotherapy Planning and Delivery Guidelines document. Doses will vary between 3 fractions over 5 days to 8 fractions over 19 days depending on the location of the lesions being treated. Niraparib treatment will start 4 weeks post completion of SBRT treatment and will continue daily until disease progression or other discontinuation criteria are met. Niraparib comes in oral tablet form and the starting dose will be 200mg per day (once a day) or 300mg per day (once a day) calculated by participant's weight and platelet count.
SBRT aloneOTHERSBRT treatment will commence within 7 days post trial entry and will be administered as detailed in the SOPRANO Radiotherapy Planning and Delivery Guidelines document. Doses will vary between 3 fractions over 5 days to 8 fractions over 19 days depending on the location of the lesions being treated.

Interventions

NameTypeDescription
Niraparib oral capsuleDRUGNiraparib used following SBRT treatment until disease progression
SBRTRADIATIONSBRT may be delivered using a specialist SBRT platform, such as CyberKnife or with a linear accelerator with SBRT capabilities.
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Eligibility Criteria

Age Range18 Years to N/A
SexFEMALE
Healthy VolunteersNo
Study Sites7

Inclusion Criteria: 1. Patients ≥ 18 years of age. 2. Histologically confirmed epithelial ovarian, fallopian tube or primary peritoneal cancer. (if cytology report includes immunohistochemistry confirming ovarian cancer, patient should not be excluded). 3. Radiological disease progression whilst on...

Countries:United Kingdom
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Competitive Landscape -Ovarian Cancer 176 trials (matched to "Ovarian Cancer Recurrent")

Top 20 of 59 competitors

CompanyTickerTrialsLead PhaseDrugs
Merck & Co., Inc.MRK5PHASE3Pembrolizumab, Paclitaxel, Bevacizumab, Docetaxel
AstraZeneca PLCAZN19PHASE3Olaparib
GSK plc Sponsored ADRGSK4PHASE3Niraparib
Eli Lilly and CompanyLLY8PHASE3Sofetabart Mipitecan, Paclitaxel, Topotecan, Gemcitabine, Pegylated liposomal doxorubicin
AbbVie, Inc.ABBV13PHASE3Mirvetuximab soravtansine plus Bevacizumab, Bevacizumab
Bristol-Myers Squibb CompanyBMY4PHASE3Rucaparib, Nivolumab
Genmab A/S Sponsored ADRGMAB5PHASE3Rina-S, Paclitaxel, Topotecan, Pegylated liposomal doxorubicin, Gemcitabine
Pfizer Inc.PFE4PHASE3Avelumab, Lorlatanib, Talazoparib, Pemetrexed, Axitinib
Corcept Therapeutics Incorporated.CORT2PHASE3Nab-paclitaxel/m^2, Relacorilant once daily
Verastem, Inc.VSTM4PHASE3avutometinib, Defactinib, Pegylated liposomal doxorubicin, Paclitaxel, Letrozole
Zentalis Pharmaceuticals, Inc.ZNTL3PHASE3Azenosertib
Imunon, Inc.IMNN3PHASE3IMNN-001, Paclitaxel, Carboplatin, Olaparib, Niraparib
Incyte CorporationINCY2PHASE3INCB123667
Genelux Corp.GNLX1PHASE3olvimulogene nanivacirepvec, Platinum chemotherapy: carboplatin or cisplatin, Non-platinum chemotherapy: Physician's Choice of gemcitabine, taxane or pegylated liposomal doxorubicin, Bevacizumab
Regeneron Pharmaceuticals, Inc.REGN4PHASE2Ubamatamab, Bevacizumab, Cemiplimab, Fianlimab, PLD
Novartis AG Sponsored ADRNVS4PHASE2Dabrafenib, Trametinib
BeOne Medicines Ltd. Sponsored ADRONC2PHASE3Pamiparib
IQVIA Holdings IncIQV1PHASE3Oregovomab, Paclitaxel, Carboplatin
Xencor, Inc.XNCR3PHASE2vudalimab
Exelixis, Inc.EXEL2PHASE2Cabozantinib
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Frequently asked questions about Niraparib

What is Niraparib used for in ovarian cancer recurrent?

Niraparib is an investigational small molecule being studied for recurrent ovarian cancer. It is being evaluated in a Phase 2 clinical trial for patients with oligometastases or oligoprogression following prior PARP inhibitor therapy. The drug is administered as an oral capsule and is not yet approved by the FDA.

What does Niraparib target?

Niraparib targets PARP, a class of enzymes involved in DNA repair. By inhibiting PARP, the drug may interfere with cancer cell repair mechanisms, potentially leading to cell death. This mechanism is being explored in the context of recurrent ovarian cancer, particularly after prior PARP inhibitor treatment.

Who makes Niraparib?

Niraparib is being developed by United Therapeutics Corporation, a biopharmaceutical company traded on the NASDAQ under the ticker symbol UTHR. The company is conducting clinical research to evaluate the drug's safety and efficacy in recurrent ovarian cancer.

What phase is Niraparib in?

Niraparib is currently in Phase 2 clinical development. It is an investigational drug, meaning it has not received FDA approval and is still being studied in clinical trials. The ongoing Phase 2 trial is actively recruiting participants to assess its potential in recurrent ovarian cancer.

What clinical trials is Niraparib in?

Niraparib is being studied in one active Phase 2 clinical trial with the identifier NCT05990192. The trial, titled 'SBRT Alone or Followed by Niraparib for Oligometastases or Oligoprogression in Ovarian Cancer Following PARPi Therapy,' is recruiting female patients aged 18 years and older in the United Kingdom. The study has a target enrollment of 42 participants.

Is Niraparib the same as Niraparib oral capsule?

Yes, Niraparib oral capsule is the same drug as Niraparib. The oral capsule is the formulation being used in clinical trials. This alternative name is commonly used in trial documentation to specify the route of administration and dosage form.