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Pembrolizumab and PDS0101

Phase 2

Metastatic Head and Neck Cancer | Monoclonal antibody | Oncology |PDS Biotechnology Corporation|Last Updated: Oct 1, 2025

Target and mechanism

Molecular targetPDCD1
Target classInhibitor
ModalityMonoclonal antibody

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials1
Total Enrollment95

FDA Designations

No designations recorded

Clinical trial landscape

Pembrolizumab and PDS0101 · 1 trial · 4 indications

Phase 2 1
NCT04260126Study of PDS0101 and Pembrolizumab Combination I/O in Subjects With HPV16 + Recurrent and/or Metastatic HNSCCMetastatic Head and Neck Cancer
COMPLETED95 Analytics
PHASE2COMPLETED
Study of PDS0101 and Pembrolizumab Combination I/O in Subjects With HPV16 + Recurrent and/or Metastatic HNSCC
Metastatic Head and Neck CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Best Overall Response (BOR) of confirmed complete response (CR) or confirmed partial response (PR) of the combination of pembrolizumab and PDS0101.
24 Months

RECIST 1.1

Secondary Endpoints

Progression-Free Survival (PFS) in all patients
12 and 24 months
Overall Survival in all patients
24 months
Incidence of Treatment-Emergent Adverse Events using NCI CTCAE, version 50 (v.11.27.17) [Safety and Tolerability] of Pembrolizumab and PDS0101 combination treatment
24 months
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Pembrolizumab and PDS0101EXPERIMENTALPembrolizumab will be administered via IV Infusion followed by subcutaneous injections of PDS0101 five times throughout the course of the study. Pembrolizumab monotherapy will be administered every cycle there is not a combination treatment until disease progression or up to Cycle 35.

Interventions

NameTypeDescription
Pembrolizumab (KEYTRUDA®) and PDS0101COMBINATION_PRODUCTIV infusion of pembrolizumab 200 mg + two 0.5mL sub-cutaneous injections of PDS0101 administered on Cycle 1, 2, 3, 4 and 12. IV infusion of Pembrolizumab 200 mg monotherapy will be administered Cycles 5 - 11 and 13 - 35.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites23

Inclusion Criteria: * The participant (or legally acceptable representative if applicable) provides written informed consent for the study. * Be ≥18 years of age on the day of signing the informed consent. * Checkpoint-naïve subjects: Have a history of histologically- confirmed diagnosis of squamou...

Countries:United StatesIrelandPuerto RicoUnited Kingdom
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Frequently asked questions about Pembrolizumab and PDS0101

What is pembrolizumab and PDS0101 used for?

Pembrolizumab and PDS0101 is a combination regimen being studied in metastatic head and neck cancer, including recurrent head and neck cancer and HPV16 positive oropharyngeal squamous cell carcinoma. It pairs the anti-PD-1 antibody pembrolizumab with the investigational immunotherapy PDS0101. The combination is in Phase 2 clinical development and is not approved for any indication.

What does pembrolizumab and PDS0101 target?

Pembrolizumab targets PDCD1, also known as PD-1, and acts as an inhibitor of that checkpoint receptor. PDS0101 is an investigational immunotherapy designed to stimulate an immune response against HPV16 positive tumors. Together the regimen aims to combine checkpoint inhibition with immune activation in HPV16 positive head and neck cancer.

Who is developing pembrolizumab and PDS0101?

PDS Biotechnology Corporation, which trades on the Nasdaq under the ticker PDSB, is developing PDS0101. The company is evaluating PDS0101 in combination with pembrolizumab, which is marketed as KEYTRUDA. The combination program is focused on HPV16 positive head and neck cancer and is in Phase 2 development.

What phase is pembrolizumab and PDS0101 in?

The pembrolizumab and PDS0101 combination is in Phase 2 clinical development. It is investigational and has not been approved by the FDA for any indication. The Phase 2 study evaluating the combination in HPV16 positive recurrent or metastatic head and neck squamous cell carcinoma has been completed.

What clinical trials is pembrolizumab and PDS0101 in?

The combination has been evaluated in one Phase 2 trial, NCT04260126, titled Study of PDS0101 and Pembrolizumab Combination I/O in Subjects With HPV16 + Recurrent and/or Metastatic HNSCC. The trial enrolled 95 participants across the United States, Ireland, Puerto Rico, and the United Kingdom, and its status is completed.