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Pamiparib

Phase 1

Ovarian Cancer | Small molecule | Oncology |HUTCHMED (China) Limited|Last Updated: Mar 10, 2026

Success Probability

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Trial Design

UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment29

FDA Designations

No designations recorded

Clinical trial landscape

Pamiparib · 1 trial · 5 indications

Phase 1 1
NCT05494580Pamiparib Plus Surufatinib in Patients With Platinum-resistant Ovarian CancerOvarian Cancer
COMPLETED29 Analytics
PHASE1COMPLETED
Pamiparib Plus Surufatinib in Patients With Platinum-resistant Ovarian Cancer
Ovarian CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Recommended Phase 2 dose (RP2D) (Phase Ib)
first 21 days of treatment

Determine the RP2D of the pamiparib and surufatinib combination

The 6-month progression-free survival (PFS) rate (Phase II)
from the first drug administration up to two years

The percentage of patients alive without documented progression 6 months after treatment initiation.

Secondary Endpoints

Objective response rate (ORR)
from the first drug administration up to two years
Disease Control Rate (DCR)
from the first drug administration up to two years
Duration of response (DOR)
from the first drug administration up to two years
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Pamiparib + Surufatinib (Phase Ib/II)EXPERIMENTALPhase Ib: A dose de-escalation schedule is used in the phase Ib dose finding part. Dose Level 1 (starting dose): pamiparib 40 mg administered orally twice daily (fixed dose) and surufatinib 250 mg administered orally once daily on a 21-day treatment cycle. If ≥2/6 patients experience a dose limiting toxicity (DLT), we will de-escalate to Dose Level 2: pamiparib 40 mg administered orally twice daily (fixed dose) and surufatinib 200 mg administered orally once daily on a 21-day treatment cycle. Approximately 3-12 patients will be enrolled in phase Ib study. Phase II: The phase II part will begin once the recommended phase 2 dose (RP2D) of surufatinib have been determined in the Phase Ib in order to assess antitumor activity of pamiparib and surufatinib combination. In phase II study, pamiparib 40 mg orally twice daily and surufatinib PR2D will be administered.

Interventions

NameTypeDescription
PamiparibDRUGOral
SurufatinibDRUGOral
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Eligibility Criteria

Age Range18 Years to 75 Years
SexFEMALE
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Signed Informed Consent Form; 2. Histologically confirmed epithelial ovarian cancer, fallopian tube cancer, or primary peritoneal cancer; 3. Platinum-resistant disease, defined as progression within 6 months from completion of most recent platinum-containing therapy. Subject ...

Countries:China
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Competitive Landscape -Ovarian Cancer 176 trials

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 Pamiparib

What is Pamiparib used for?

Pamiparib is an investigational small molecule being studied for the treatment of ovarian cancer, specifically platinum-resistant ovarian cancer. It is being evaluated in combination with surufatinib in patients with this condition. The drug is currently in Phase 1 clinical development and has not been approved by regulatory authorities.

Who is developing Pamiparib?

Pamiparib is being developed by HUTCHMED (China) Limited, a biopharmaceutical company listed on the stock exchange under the ticker HCM. The company is conducting clinical trials to evaluate the safety and efficacy of Pamiparib in patients with ovarian cancer.

What phase is Pamiparib in?

Pamiparib is in Phase 1 clinical development. A Phase 1 trial has been completed, which enrolled 29 patients with platinum-resistant ovarian cancer. The drug is still investigational and has not received FDA approval or any other regulatory approval for commercial use.

What clinical trials is Pamiparib in?

Pamiparib has been studied in one clinical trial with the identifier NCT05494580. This Phase 1 trial, titled 'Pamiparib Plus Surufatinib in Patients With Platinum-resistant Ovarian Cancer,' was completed in China. The study enrolled 29 female patients aged 18 years and older with ovarian cancer or related conditions.

How does Pamiparib work?

Pamiparib is a small molecule that targets PARP, an enzyme involved in DNA repair. By inhibiting PARP, Pamiparib may prevent cancer cells from repairing their DNA, leading to cell death. This mechanism is being explored in the treatment of platinum-resistant ovarian cancer, where the drug is combined with surufatinib.