Comparing Petosemtamab with Pembrolizumab for head and neck squamous cell carcinoma
Official title: A Phase 3 Study to Evaluate Petosemtamab Plus Pembrolizumab vs Pembrolizumab in First-line Treatment of Head and Neck Cancer (LiGeR - HN1)
A Phase 3 Randomized, Open-label Study to Evaluate the Efficacy and Safety of Petosemtamab Plus Pembrolizumab vs Pembrolizumab in First-line Treatment of Recurrent or Metastatic PD-L1+ Head and Neck Squamous Cell Carcinoma
- Phase 3
- 2 groups
- Sites in St. John's, Toronto and 1 more city
- Recruiting
Interventions
- Medication
Petosemtamab
MCLA-158
- Medication
Pembrolizumab
Humanized Antibody
Canadian Sites (3)
3 of 3 recruiting
- Recruiting
Site 165
St. John's
- Recruiting
Site 44
Toronto
- Recruiting
Site 111
Winnipeg
Eligibility Criteria
See who this study is looking for31 criteria
The trial’s own eligibility text, word for word from the registry. Only the trial site can say who takes part.
Inclusion
- +Age ≥ 18 years at signing of ICFInformed consentThe process of being told what taking part involves, then choosing freely.Read more →
- +ECOG Performance Status (PS) of 0-1
- +HIV-positive patients are eligible only if the cluster of differentiation 4 (CD4+) count is ≥ 300/µl, viral load is undetectable, and the patient is currently receiving highly active antiretroviral therapy
- +Signed ICF before initiation of any study procedures
- +Histologically confirmed HNSCC with evidence of metastatic or locally recurrent disease not amenable to local therapy with curative intent.
- +The eligible HNSCC primary tumor locations are oropharynx, oral cavity, hypopharynx, and larynx.
- +HNSCC patients eligible to receive pembrolizumab as 1L monotherapy with tumors expressing PD-L1, CPS ≥1.
- +HNSCC patients should not have had previous systemic therapy administered in the incurable recurrent or metastatic setting
- +A new tumor biopsy, unless the patient has an available archival tumor sample with sufficient material
- +Measurable disease per InvestigatorPrincipal investigatorThe doctor or researcher responsible for running the study at a site.Read more → assessment as defined by RECIST v1.1 by radiologic methods
- +Life expectancy ≥ 12 weeks, as per investigator assessment.
- +Left ventricular ejection fraction (LVEF) ≥50% by echocardiogram (ECHO) or multigated acquisition (MUGA) scan
- +Adequate organ function as defined per protocolProtocolThe detailed plan a study must follow.Read more →.
Exclusion
- −History of hypersensitivity reaction to any of the excipients of petosemtamab or pembrolizumab.
- −Known leptomeningeal involvement
- −Any systemic anticancer therapy or investigational drug within 4 weeks or 5 half-lives, whichever is shorter, before randomizationRandomisedWhich group you go into is decided by chance, not by you or your doctor.Read more →
- −Requirement for immunosuppressive medication
- −Clinically significant toxicities related to prior anticancer therapies that have not returned to ≤ Grade 1 or baselineBaselineYour starting measurements, taken before treatment begins.Read more → except for Grade ≤2- myalgia, neuropathy, alopecia, and any prior therapy related endocrinopathies
- −Unstable angina; history of congestive heart failure of Class II-IV New York Heart Association (NYHA) criteria, or serious cardiac arrhythmia requiring treatment; or history of myocardial infarction within 6 months prior to randomization
- −History of prior malignancies within the last 5 years, with the exception of excised local cancer
- −Current dyspnea at rest of any origin, or other diseases requiring continuous oxygen therapy
- −Current serious illness or medical conditions including, but not limited to, uncontrolled active infection, clinically significant pulmonary, metabolic or psychiatric disorders
- −Patients with known infectious diseases as per protocolProtocolThe detailed plan a study must follow.Read more →.
- −The patient has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy of prednisone \>10 mg/day or equivalent, or any other form of immunosuppressive therapy
- −The patient has an active autoimmune disease that has required systemic immune suppressive treatment in the past 2 years; replacement therapy is not considered immune suppressive treatment
- −The patient has had an allogeneic tissue/solid organ transplant.
- −Patient has a primary tumor siteTrial siteA hospital or clinic where a study is actually run.Read more → of nasopharynx, or sinonasal carcinoma (any histology)
- −Other protocol defined inclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more →/exclusion criteriaExclusion criteriaThe things that would prevent someone from taking part.Read more → may apply.
- −Pregnant or breastfeeding patients.
- −Central nervous system metastases that are untreated or already treated but symptomatic, or require radiation, surgery, or continued steroid therapy to controlControl groupThe group a new treatment is measured against.Read more → symptoms within 21 days prior to randomization
- −Major surgery or radiotherapy within 3 weeks of randomization
In plain language
Assembled directly from this trial’s registry record. Every sentence traces to a field below — nothing here is generated or interpreted.
What this study is
This study is testing a treatment for a condition.
Phase 3Phase 3A large study comparing a treatment against the current standard.Read more → — a large study comparing this against the current standard, usually across many hospitals.
From the trial registry
Built from these fields:
- designModule.designInfo.primaryPurpose
- designModule.phases
Who receives what
There are 2 groups in this study.
Group A receives Petosemtamab and Pembrolizumab.
Registry label: A: Petosemtamab + Pembrolizumab
Group B, the comparison group, receives Pembrolizumab.
Registry label: B: Pembrolizumab
From the trial registry
Built from these fields:
- armsInterventionsModule.armGroups[].label
- armsInterventionsModule.armGroups[].type
- armsInterventionsModule.armGroups[].interventionNames
How the study is run
Which group you would be placed in is decided by chance, like a coin flip — not by you and not by your doctor.
This study is open-labelOpen-labelEveryone knows which treatment is being given — nothing is hidden.Read more →: everyone knows which treatment is being given, including you and the study team.
From the trial registry
Built from these fields:
- designModule.designInfo.allocation
- designModule.designInfo.maskingInfo.masking
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
One group receives an existing treatment, so the two can be compared.
From the trial registry
Built from these fields:
- armsInterventionsModule.armGroups[].type
- armsInterventionsModule.armGroups[].interventionNames
Who the study is looking for
The study lists a minimum age of 18 years, with no upper limit given.
The study is open to people of any sex.
The study does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
These are the criteria the study lists. Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part.
From the trial registry
Built from these fields:
- eligibilityModule.minimumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How big and how long
The study aims to enrol about 700 people.
The study is currently expected to finish around July 2030.
The main measurement is taken over: Up to approximately 3 years.
From the trial registry
Built from these fields:
- designModule.enrollmentInfo.count
- statusModule.completionDateStruct.date
- outcomesModule.primaryOutcomes[].timeFrame
What the study measures
Overall Survival (OS) — measured over Up to approximately 3 years.
Objective Response Rate (ORR) per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 as assessed by blinded independent central review (BICR) — measured over Up to approximately 2 years.
From the trial registry
Built from these fields:
- outcomesModule.primaryOutcomes[].measure
- outcomesModule.primaryOutcomes[].timeFrame
Source: NCT06525220 on ClinicalTrials.gov. The full registry text is further down this page — this summary never replaces it.
Not medical advice. What do these terms mean?
What is being tested — in plain terms
About PetosemtamabDrug
MCLA-158
From the trial registry — its own words, unedited.
What a drug is here: A medicine — a chemical or small-molecule treatment — given as the thing being studied.
Read the full explanation → · in clinical review
About PembrolizumabDrug
Humanized Antibody
From the trial registry — its own words, unedited.
What a drug is here: A medicine — a chemical or small-molecule treatment — given as the thing being studied.
Read the full explanation → · in clinical review
Common questions
Answered from this trial’s registry record. Where the record doesn’t say, these answers say so rather than filling the gap.
Am I eligible for this trial?
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part. Concord cannot make that determination, and neither can any tool that has not examined you.
What the study lists: a minimum age of 18 years.
The full inclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more → and exclusion criteriaExclusion criteriaThe things that would prevent someone from taking part.Read more → are published on this page, exactly as the study team wrote them.
The useful next step is to bring this trial to your doctor. Answering a few questions first gives them something concrete to review.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.eligibilityCriteria
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
One group receives an existing treatment so the two can be compared.
From the trial registry
- armsInterventionsModule.armGroups[].type
Would I know which treatment I am getting?
This study is open-labelOpen-labelEveryone knows which treatment is being given — nothing is hidden.Read more →: everyone knows which treatment is being given, including you and the study team.
Which group you would be placed in is decided by chance, like a coin flip — not by you and not by your doctor.
From the trial registry
- designModule.designInfo.maskingInfo.masking
- designModule.designInfo.allocation
Who can join?
The study lists a minimum age of 18 years, with no upper limit given.
It is open to people of any sex.
It does not accept healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more →.
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can confirm whether a particular person can take part.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How long would this take?
The study's main measurement is taken over: Up to approximately 3 years.
The study as a whole is currently expected to finish around 2030-07.
How long any one person takes part can differ from the study length. The study team can tell you what the schedule looks like in practice.
From the trial registry
- outcomesModule.primaryOutcomes[].timeFrame
- statusModule.completionDateStruct.date
How many people are taking part?
The study aims to enrol about 700 people.
From the trial registry
- designModule.enrollmentInfo.count
Where is this happening?
This study lists 4 locations, including: St. John's, Canada; Toronto, Canada; Winnipeg, Canada; Minneapolis, Minnesota, United States.
Sites can open and close during a study, so confirm with the team before travelling.
From the trial registry
- trial_locations
About This Trial
This is a Phase 3 randomized, open-label study to evaluate the efficacy and safety of petosemtamab plus pembrolizumab vs pembrolizumab in first-line treatment of recurrent or metastatic PD-L1+ head and neck squamous cell carcinoma.
Other Sites (1)
Site 155
Minneapolis, Minnesota, United States
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See if this trial could fit youThis page is for informational purposes only and does not constitute medical advice. Clinical trial eligibility can only be determined by the trial site after proper screening. Trial information is sourced from ClinicalTrials.gov and may not reflect the most current status. Always consult your healthcare provider before making decisions about clinical trial participation.