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Pembrolizumab

Phase 2

Ovarian Cancer | Small molecule | Oncology |ALX Oncology Holdings Inc.|Last Updated: Mar 4, 2026

Target and mechanism

Molecular targetPDCD1
Target classInhibitor
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment16

FDA Designations

No designations recorded

Clinical trial landscape

Pembrolizumab · 1 trial · 1 indication

Phase 2 1
NCT05467670Safety and Efficacy of Anti-CD47, ALX148 in Combination With Liposomal Doxorubicin and Pembrolizumab in Recurrent Platinum-resistant Ovarian CancerOvarian Cancer
ACTIVE NOT_RECRUITING16 Analytics
PHASE2ACTIVE NOT_RECRUITING
Safety and Efficacy of Anti-CD47, ALX148 in Combination With Liposomal Doxorubicin and Pembrolizumab in Recurrent Platinum-resistant Ovarian Cancer
Ovarian CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Objective Response Rate (ORR)
Up to 3 years (cohort)

The proportion of patients having either a complete response (CR) or partial response (PR), per RECIST 1.1. Complete Response (CR): Disappearance of all target lesions. For non-target lesions, CR is the disappearance of all non-target lesions and normalization of tumor marker level. Partial Response (PR): At least a 30% decrease in the sum of the LD of target lesions, taking as reference the baseline sum LD.

Secondary Endpoints

Overall Survival (OS)
Up to 5 years
Progression-free survival (PFS)
Up to 5 years
Objective response rate Immune-related Response Criteria (iRECIST)
Up to 3 years (cohort)
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
ALX148 + Doxorubicin (PLD) + PembrolizumabEXPERIMENTALGiven on Day 1 of each 21 day cycle, in the following order of administration: 200 mg IV pembrolizumab\* (maximum of 2 years (approximately 35 cycles) 45 mg/kg IV ALX148 30 mg/m\^2 IV doxorubicin (Pegylated Liposomal Doxorubicin (PLD)\* \*standard of care

Interventions

NameTypeDescription
PembrolizumabDRUGA type of immunotherapy that stimulates the body's immune system to fight cancer cells by targeting and blocking PD-1 proteins on the surface of certain immune T-cells, thus triggering the T-cells to find and kill cancer cells.
ALX148DRUGA fusion protein comprised of a high affinity CD47 blocker linked to an inactive immunoglobulin Fc region, enhancing innate and adaptive immune responses against cancer.
DoxorubicinDRUGAn anthracycline that slows/stops the growth of cancer cells by blocking an enzyme called topo isomerase 2, used as second line non-platinum chemotherapy in patients with platinum-resistant ovarian cancer.
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Eligibility Criteria

Age Range18 Years to N/A
SexFEMALE
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Participants must have recurrent epithelial ovarian cancer. 2. Platinum-resistant disease: Patients who recur within \< 6 months of prior platinum-based therapy excluding those with primary platinum refractory disease (see exclusion criteria). 3. Following histology types are...

Countries:United States
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Competitive Landscape -Ovarian Cancer 175 trials

Top 20 of 58 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 Pembrolizumab

What is Pembrolizumab used for in Ovarian Cancer?

Pembrolizumab is being studied in combination with ALX148 and liposomal doxorubicin for the treatment of recurrent platinum-resistant ovarian cancer. It is currently in Phase 2 clinical development for this indication, with an active clinical trial enrolling female patients aged 18 years and older in the United States.

What does Pembrolizumab target?

Pembrolizumab targets PDCD1, also known as programmed cell death protein 1, and acts as an inhibitor of this target. By inhibiting PDCD1, it is designed to modulate the immune response against cancer cells. This mechanism is being evaluated in the context of ovarian cancer treatment.

Who makes Pembrolizumab?

Pembrolizumab is being developed by ALX Oncology Holdings Inc., a biopharmaceutical company traded under the ticker symbol ALXO. The company is conducting clinical trials to evaluate the drug's safety and efficacy in combination with other agents for ovarian cancer.

What phase is Pembrolizumab in for Ovarian Cancer?

Pembrolizumab is in Phase 2 clinical development for ovarian cancer. The ongoing trial is active but not recruiting participants, and it is an uncontrolled, non-randomized study. The drug is investigational and has not yet been approved for this indication.

What clinical trials is Pembrolizumab in for Ovarian Cancer?

Pembrolizumab is being evaluated in clinical trial NCT05467670, titled 'Safety and Efficacy of Anti-CD47, ALX148 in Combination With Liposomal Doxorubicin and Pembrolizumab in Recurrent Platinum-resistant Ovarian Cancer.' This Phase 2 trial is active in the United States and has an enrollment of 16 participants.

Is Pembrolizumab the same as ALX148?

No, Pembrolizumab is not the same as ALX148. Pembrolizumab is the drug being studied, while ALX148 is a separate agent that is combined with Pembrolizumab and liposomal doxorubicin in the clinical trial for ovarian cancer. Both are part of the investigational combination regimen.