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Pamiparib

Phase 1

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

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment29
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05494580Pamiparib Plus Surufatinib in Patients With Platinum-resistant Ovarian CancerPHASE1 COMPLETED 29Sep 22, 2022Jan 31, 2026Mar 10, 20261 China
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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 — 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 180 trials
CompanyTickerTrialsLead PhaseDrugs
Merck & Co., Inc.MRK5PHASE3Pembrolizumab, Paclitaxel, Bevacizumab, Docetaxel, Sacituzumab tirumotecan
AstraZeneca PLCAZN19PHASE3Olaparib, Bevacizumab, Durvalumab, Carboplatin+Paclitaxel, AZD5335
Eli Lilly and CompanyLLY8PHASE3Sofetabart Mipitecan, Paclitaxel, Topotecan, Gemcitabine, Pegylated liposomal doxorubicin
AbbVie, Inc.ABBV13PHASE3Mirvetuximab soravtansine plus Bevacizumab, Bevacizumab, Mirvetuximab soravtansine, Carboplatin, Mirvetuximab Soravtansine
GSK plc Sponsored ADRGSK4PHASE3Niraparib, Dostarlimab, Mocertatug rezetecan, Paclitaxel, Pegylated liposomal doxorubicin
Bristol-Myers Squibb CompanyBMY4PHASE3Rucaparib, Nivolumab, BMS-986340, BMS-936558-01, Docetaxel
Pfizer Inc.PFE5PHASE3Avelumab, Lorlatanib, Talazoparib, Pemetrexed, Axitinib
Genmab A/S Sponsored ADRGMAB5PHASE3Rina-S, Paclitaxel, Topotecan, Pegylated liposomal doxorubicin, Gemcitabine
Corcept Therapeutics Incorporated.CORT2PHASE3Nab-paclitaxel /m^2, Relacorilant once daily, Bevacizumab /kg
Verastem, Inc.VSTM4PHASE3avutometinib, Defactinib, Pegylated liposomal doxorubicin, Paclitaxel, Letrozole
Imunon, Inc.IMNN3PHASE3IMNN-001, Paclitaxel, Carboplatin, Olaparib, Niraparib
Zentalis Pharmaceuticals, Inc.ZNTL3PHASE3Azenosertib, azenosertib, Carboplatin, Pegylated liposomal doxorubicin, Paclitaxel
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, KFA115, pembrolizumab, Tulmimetostat
BeOne Medicines Ltd. Sponsored ADRONC2PHASE3Pamiparib, BG-68501, Fulvestrant, BGB-43395
IQVIA Holdings IncIQV1PHASE3Oregovomab, Paclitaxel, Carboplatin
Exelixis, Inc.EXEL2PHASE2Cabozantinib, cabozantinib, atezolizumab
Xencor, Inc.XNCR3PHASE2vudalimab, XmAb541, XmAb808
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