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Recombinant EphB4-HSA Fusion Protein and Pembrolizumab, MK-3475

A Phase IIa Trial of sEphB4-HSA in Combination With Anti PD-1 Antibody (Pembrolizumab, MK3475) in Patients With Non-small Cell Lung and Head/Neck Cancer

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03049618
Enrollment
42
Registered
2017-02-10
Start date
2017-03-10
Completion date
2024-09-04
Last updated
2025-10-22

For informational purposes only โ€” not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

ALK Gene Mutation, BRAF Gene Mutation, EGFR Gene Mutation, Head and Neck Squamous Cell Carcinoma, Metastatic Head and Neck Carcinoma, Recurrent Head and Neck Carcinoma, Recurrent Non-Small Cell Lung Carcinoma, ROS1 Gene Mutation, Stage IIIA Non-Small Cell Lung Cancer, Stage IIIB Non-Small Cell Lung Cancer, Stage III Non-Small Cell Lung Cancer, Stage IV Non-Small Cell Lung Cancer

Brief summary

This phase IIa trial studies how well recombinant EphB4-HSA fusion protein and pembrolizumab work in treating patients with non-small cell lung cancer that has spread to other places in the body or head and neck squamous cell cancer that has come back or spread to other places in the body. Recombinant EphB4-HSA fusion protein may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Monoclonal antibodies, such as pembrolizumab, may interfere with the ability of cancer cells to grow and spread. Giving recombinant EphB4-HSA fusion protein and pembrolizumab may work better in treating patients with non-small cell lung or head and neck squamous cell cancer.

Detailed description

PRIMARY OBJECTIVES: I. Determine the response rate of the combination of pembrolizumab and recombinant EphB4-HSA fusion protein (sEphB4-HSA) as combination therapy. SECONDARY OBJECTIVES: I. Determine the biomarkers of response. II. Determine the unique toxicities of the combination of pembrolizumab and sEphB4-HSA. OUTLINE: Patients receive pembrolizumab intravenously (IV) over 30 minutes on day 1 and recombinant EphB4-HSA fusion protein IV over 30 minutes on days 1, 8, and 15. Courses repeat every 3 weeks for up to 24 months in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up at 30 days and then every 12 weeks.

Interventions

OTHERLaboratory Biomarker Analysis

Correlative studies

BIOLOGICALPembrolizumab

Given IV

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
University of Southern California
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* One of the following: * Locally advanced or metastatic non-small cell lung cancer that has progressed after at least 1 line of platinum based chemotherapy * Patients may have received up to 2 prior lines of chemotherapy * Patients with actionable alterations in EGFR/ALK/ROS1/BRAF must also have progressed after treatment with a tyrosine kinase inhibitor appropriate for their genetic alteration * Untreated patients who refuse 1st line platinum based chemotherapy are also eligible * Squamous cell carcinoma of the head and neck whose disease has progressed after at least 1 line of platinum based chemotherapy * Patients may have received up to 2 prior lines of chemotherapy * Untreated patients who refuse 1st line platinum based chemotherapy are also eligible * Patients who relapse within 6 months of adjuvant cisplatin based concurrent chemoradiation, or neoadjuvant cisplatin based therapy can be considered eligible without an additional course of platinum chemotherapy for relapsed disease * Patients may have either locally recurrent or distant metastatic disease * Be willing and able to provide written informed consent/assent for the trial * Have measurable disease based on Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 * Be willing to provide tissue from a newly obtained core or excisional biopsy of a tumor lesion after 2 cycles of therapy * Have a performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG) performance scale * Absolute neutrophil count (ANC) \>= 1,500 /mcL * Platelets \>= 100,000 / mcL * Hemoglobin \>= 9 g/dL or \>= 5.6 mmol/L without transfusion or erythropoietin (EPO) dependency (within 7 days of assessment) * Serum creatinine =\< 1.5 x upper limit of normal (ULN) OR measured or calculated creatinine clearance (glomerular filtration rate \[GFR\] can also be used in place of creatinine or creatinine clearance \[CrCl\]) \>= 60 mL/min for subject with creatinine levels \> 1.5 x institutional ULN * Serum total bilirubin =\< 1.5 x ULN OR direct bilirubin =\< ULN for subjects with total bilirubin levels \> 1.5 ULN * Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase \[SGOT\]) and alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase \[SGPT\]) =\< 2.5 x ULN OR =\< 5 x ULN for subjects with liver metastases * Albumin \>= 2.5 mg/dL * International normalized ratio (INR) or prothrombin time (PT) =\< 1.5 x ULN unless subject is receiving anticoagulant therapy as long as PT or partial thromboplastin time (PTT) is within therapeutic range of intended use of anticoagulants * Activated partial thromboplastin time (aPTT) =\< 1.5 x ULN unless subject is receiving anticoagulant therapy as long as PT or PTT is within therapeutic range of intended use of anticoagulants * Female subject of childbearing potential should have a negative urine or serum pregnancy within 72 hours prior to receiving the first dose of study medication; if the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required * Female subjects of childbearing potential must be willing to use an adequate method of contraception for the course of the study through 120 days after the last dose of study medication * Note: abstinence is acceptable if this is the usual lifestyle and preferred contraception for the subject * Male subjects of childbearing potential must agree to use an adequate method of contraception, starting with the first dose of study therapy through 120 days after the last dose of study therapy * Note: abstinence is acceptable if this is the usual lifestyle and preferred contraception for the subject

Exclusion criteria

* Is currently participating and receiving study therapy or has participated in a study of an investigational agent and received study therapy or used an investigational device within 4 weeks of the first dose of treatment * Has a diagnosis of immunodeficiency or is receiving systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior to the first dose of trial treatment * Has a known history of active TB (Bacillus tuberculosis) * Hypersensitivity to pembrolizumab or any of its excipients * Has had a prior anti-cancer monoclonal antibody (mAb) within 4 weeks prior to study day 1 or who has not recovered (i.e., =\< grade 1 or at baseline) from adverse events due to agents administered more than 4 weeks earlier * Has had prior chemotherapy, targeted small molecule therapy, or radiation therapy within 2 weeks prior to study day 1 or who has not recovered (i.e., =\< grade 1 or at baseline) from adverse events due to a previously administered agent * Note: subjects with =\< grade 2 neuropathy are an exception to this criterion and may qualify for the study * Note: if subject received major surgery, they must have recovered adequately from the toxicity and/or complications from the intervention prior to starting therapy * Has a known additional malignancy that is progressing or requires active treatment; exceptions include basal cell carcinoma of the skin or squamous cell carcinoma of the skin that has undergone potentially curative therapy or in situ cervical cancer * Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis; subjects with previously treated brain metastases may participate provided they are stable (without evidence of progression by imaging for at least four weeks prior to the first dose of trial treatment and any neurologic symptoms have returned to baseline), have no evidence of new or enlarging brain metastases, and are not using steroids for at least 7 days prior to trial treatment; this exception does not include carcinomatous meningitis which is excluded regardless of clinical stability; known brain metastases are considered active, if any of the following criteria is applicable: * Brain imaging during screening demonstrates progression of existing metastases and/or appearance of new lesions compared to brain imaging performed at least 4 weeks earlier * Neurological symptoms attributed to brain metastases have not returned to baseline * Steroids were used for brain metastases within 28 days of randomization * Has active autoimmune disease that has required systemic treatment in the past 2 years (i.e. with use of disease modifying agents, corticosteroids or immunosuppressive drugs); replacement therapy (eg., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment * Has known history of, or any evidence of active, non-infectious pneumonitis * Has an active infection requiring systemic therapy * Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the subject's participation for the full duration of the trial, or is not in the best interest of the subject to participate, in the opinion of the treating investigator * Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial * Is pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the trial, starting with the pre-screening or screening visit through 120 days after the last dose of trial treatment * Has received prior therapy with an anti-PD-1, anti-PD-L1, anti-PD-L2, or anti cytotoxic T-lymphocyte-associated antigen-4 (CTLA-4) antibody including ipilimumab or any other antibody or drug specifically targeting T-cell co-stimulation or checkpoint pathways * Has a known history of human immunodeficiency virus (HIV) (HIV 1/2 antibodies) * Has known active hepatitis B (e.g., hepatitis B surface antigen \[HBsAg\] reactive) or hepatitis C (e.g., hepatitis C virus \[HCV\] ribonucleic acid \[RNA\] \[qualitative\] is detected) * Has received a live vaccine within 30 days of planned start of study therapy * Note: seasonal influenza vaccines for injection are generally inactivated flu vaccines and are allowed; however intranasal influenza vaccines (e.g., Flu-Mist) are live attenuated vaccines, and are not allowed

Design outcomes

Primary

MeasureTime frameDescription
Overall Response Rate (ORR)Up to 22 monthsCalculated based on the evaluable population of patients who received at least 1 dose of therapy. Overall response rate (ORR) is complete response (CR) + partial response (PR) recorded from study entry until disease progression based on RECIST v1.1 criteria. Per RECIST 1.1 for target lesions: CR is complete disappearance of all target lesions and PR is at least a 30% decrease in the sum of longest diameter (LD) of target lesions, taking as reference baseline sum LD. PR or better overall response assumes at a minimum incomplete response/stable disease (SD) for the evaluation of non-target lesions and absence of new lesions.

Secondary

MeasureTime frameDescription
Duration of ResponseUp to 22 monthsDuration of response is measured from date of first confirmed response until date of disease progression.
Number of Participants With Adverse EventsAdverse events were collected from first dose of study treatment up to 30 days after last dose of treatment, up to 21 months (number of treatment given ranged from 1 cycle to 30 cycles).The adverse events were graded as per common terminology criteria for adverse events(CTCAE) version 4.0. For a detailed list of adverse events refer to the adverse event module.
Overall Survival (OS)Up to 41 monthsOS is the duration from study entry to death. Participants last known to be alive are censored at date of last contact.
Progression Free Survival (PFS)Up to 23 monthsPFS was defined as duration of time from the first dose of study drug to the first documentation of Progressive Disease (PD) by investigator assessment using RECIST 1.1 or death on study due to any cause on or before the data cutoff date, whichever occurred first. PD: \>=20% increase (\>=5 mm absolute increase) in the sum of target lesion measurements, compared to the smallest sum on study (including baseline), or unequivocal progression of non-target lesions, evaluated as a whole, such that it is clear that treatment has failed, and disease is progressing, regardless of the status of the target lesions.

Other

MeasureTime frameDescription
Association of Biomarkers With Overall Survival (OS) - HPV StatusUp to 34 monthsOS was calculated from study entry to date of death. Participants last known to be alive are censored at date of last contact.
Association of Biomarkers With Overall Survival (OS) - P16 StatusUp to 34 monthsOS was calculated from study entry to date of death. Participants last known to be alive are censored at date of last contact.
Association of Biomarkers With Overall Survival (OS) - EphrinB2Up to 24 monthsOS was calculated from study entry to date of death. Participants last known to be alive are censored at date of last contact.
Association of Biomarkers With Overall Survival (OS) - PD-L1 StatusUp to 34 monthsOS was calculated from study entry to date of death. Participants last known to be alive are censored at date of last contact.
Association of Biomarkers With Overall Survival (OS) - EphrinB2 Positive/HPV-negativeUp to 34 monthsOS was calculated from study entry to date of death. Participants last known to be alive are censored at date of last contact.
Association of Biomarker With Overall Response Rate - HPV StatusUp to 22 monthsOverall response rate (ORR) is complete response (CR) + partial response (PR) recorded from study entry until disease progression based on RECIST v1.1 criteria. Per RECIST 1.1 for target lesions: CR is complete disappearance of all target lesions and PR is at least a 30% decrease in the sum of longest diameter (LD) of target lesions, taking as reference baseline sum LD. PR or better overall response assumes at a minimum incomplete response/stable disease (SD) for the evaluation of non-target lesions and absence of new lesions.
Association of Biomarkers With Progression Free Survival (PFS) - P16 StatusUp to 11 monthsFrom study entry to the date of first documented disease progression or death due to any cause, whichever came first.
Association of Biomarkers With Progression Free Survival (PFS) - EphrinB2 StatusUp to 11 monthsFrom study entry to the date of first documented disease progression or death due to any cause, whichever came first.
Association of Biomarkers With Progression Free Survival (PFS) - PD-L1 StatusUp to 11 monthsFrom study entry to the date of first documented disease progression or death due to any cause, whichever came first.
Association of Biomarkers With Progression Free Survival (PFS) - EphrinB2 Positive/HPV-negativeUp to 11 monthsFrom study entry to the date of first documented disease progression or death due to any cause, whichever came first.
Association of Biomarkers With Progression Free Survival (PFS) - HPV StatusUp to 11 monthsFrom study entry to the date of first documented disease progression or death due to any cause, whichever came first.
Association of Biomarker With Overall Response Rate - P16 StatusUp to 22 monthsOverall response rate (ORR) is complete response (CR) + partial response (PR) recorded from study entry until disease progression based on RECIST v1.1 criteria. Per RECIST 1.1 for target lesions: CR is complete disappearance of all target lesions and PR is at least a 30% decrease in the sum of longest diameter (LD) of target lesions, taking as reference baseline sum LD. PR or better overall response assumes at a minimum incomplete response/stable disease (SD) for the evaluation of non-target lesions and absence of new lesions.
Association of Biomarkers With Overall Response Rate - EphrinB2 StatusUp to 22 monthsOverall response rate (ORR) is complete response (CR) + partial response (PR) recorded from study entry until disease progression based on RECIST v1.1 criteria. Per RECIST 1.1 for target lesions: CR is complete disappearance of all target lesions and PR is at least a 30% decrease in the sum of longest diameter (LD) of target lesions, taking as reference baseline sum LD. PR or better overall response assumes at a minimum incomplete response/stable disease (SD) for the evaluation of non-target lesions and absence of new lesions.
Association of Biomarkers With Overall Response Rate - PD-L1 StatusUp to 22 monthsOverall response rate (ORR) is complete response (CR) + partial response (PR) recorded from study entry until disease progression based on RECIST v1.1 criteria. Per RECIST 1.1 for target lesions: CR is complete disappearance of all target lesions and PR is at least a 30% decrease in the sum of longest diameter (LD) of target lesions, taking as reference baseline sum LD. PR or better overall response assumes at a minimum incomplete response/stable disease (SD) for the evaluation of non-target lesions and absence of new lesions.
Association of Biomarkers With Overall Response Rate - EphrinB2 Positive/HPV-negativeUp to 22 monthsOverall response rate (ORR) is complete response (CR) + partial response (PR) recorded from study entry until disease progression based on RECIST v1.1 criteria. Per RECIST 1.1 for target lesions: CR is complete disappearance of all target lesions and PR is at least a 30% decrease in the sum of longest diameter (LD) of target lesions, taking as reference baseline sum LD. PR or better overall response assumes at a minimum incomplete response/stable disease (SD) for the evaluation of non-target lesions and absence of new lesions.

Countries

United States

Participant flow

Recruitment details

Recruitment for this study opened in March 2017 and closed in March 2021. All subjects were seen and treated in the medical clinics at the University of Southern California

Participants by arm

ArmCount
Head and Neck Cancer Cohort
Patients receive pembrolizumab IV over 30 minutes on day 1 and recombinant EphB4-HSA fusion protein IV over 30 minutes on days 1, 8, and 15. Courses repeat every 3 weeks for up to 24 months in the absence of disease progression or unacceptable toxicity. Laboratory Biomarker Analysis: Correlative studies Pembrolizumab: Given IV Recombinant EphB4-HSA Fusion Protein: Given IV
25
Non-Small Cell Lung Cancer Cohort
Patients receive pembrolizumab IV over 30 minutes on day 1 and recombinant EphB4-HSA fusion protein IV over 30 minutes on days 1, 8, and 15. Courses repeat every 3 weeks for up to 24 months in the absence of disease progression or unacceptable toxicity. Laboratory Biomarker Analysis: Correlative studies Pembrolizumab: Given IV Recombinant EphB4-HSA Fusion Protein: Given IV
17
Total42

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyDeath10
Overall StudyLack of Efficacy12

Baseline characteristics

CharacteristicHead and Neck Cancer CohortNon-Small Cell Lung Cancer CohortTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
10 Participants4 Participants14 Participants
Age, Categorical
Between 18 and 65 years
15 Participants13 Participants28 Participants
ECOG Performance Status (PS)
Status 0 (Fully active without restriction)
12 Participants6 Participants18 Participants
ECOG Performance Status (PS)
Status 1 (Physically restricted but ambulatory and able to carry out light work)
13 Participants11 Participants24 Participants
EphrinB2 Status
Negative
9 Participants0 Participants9 Participants
EphrinB2 Status
Positive
16 Participants0 Participants16 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
6 Participants4 Participants10 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
19 Participants13 Participants32 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
HPV Status
Negative
15 Participants0 Participants15 Participants
HPV Status
Positive
10 Participants0 Participants10 Participants
Number of Prior Regimens Received
0
5 Participants1 Participants6 Participants
Number of Prior Regimens Received
1
18 Participants10 Participants28 Participants
Number of Prior Regimens Received
2
2 Participants5 Participants7 Participants
Number of Prior Regimens Received
3
0 Participants1 Participants1 Participants
P16 Gene Status
Negative
15 Participantsโ€”15 Participants
P16 Gene Status
Positive
10 Participantsโ€”10 Participants
PDL-1 Status
Negative
13 Participants0 Participants13 Participants
PDL-1 Status
Positive
12 Participants0 Participants12 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
5 Participants6 Participants11 Participants
Race (NIH/OMB)
Black or African American
2 Participants2 Participants4 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants1 Participants2 Participants
Race (NIH/OMB)
White
17 Participants8 Participants25 Participants
Received Prior Chemotherapy
No
5 Participants1 Participants6 Participants
Received Prior Chemotherapy
Yes
20 Participants16 Participants36 Participants
Received Prior Radiotherapy
No
8 Participants8 Participants16 Participants
Received Prior Radiotherapy
Yes
17 Participants9 Participants26 Participants
Received Prior Surgery
No
14 Participants12 Participants26 Participants
Received Prior Surgery
Yes
11 Participants5 Participants16 Participants
Region of Enrollment
United States
25 Participants17 Participants42 Participants
Sex: Female, Male
Female
5 Participants9 Participants14 Participants
Sex: Female, Male
Male
20 Participants8 Participants28 Participants
Site of Disease
Larynx
4 Participants0 Participants4 Participants
Site of Disease
Lip and Oral Cavity
14 Participants0 Participants14 Participants
Site of Disease
Lung - Bronchi, NOS
0 Participants10 Participants10 Participants
Site of Disease
Lung - Lower Lobe
0 Participants4 Participants4 Participants
Site of Disease
Lung - Middle Lobe
0 Participants1 Participants1 Participants
Site of Disease
Lung - Upper Lobe
0 Participants2 Participants2 Participants
Site of Disease
Nasal Cavity and Paranasal Sinuses
5 Participants0 Participants5 Participants
Site of Disease
Pharynx
2 Participants0 Participants2 Participants
Smoking Status
Current Smoker
2 Participants0 Participants2 Participants
Smoking Status
Former Smoker
11 Participants7 Participants18 Participants
Smoking Status
Never Smoke
12 Participants9 Participants21 Participants
Smoking Status
Unknown
0 Participants1 Participants1 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
12 / 256 / 17
other
Total, other adverse events
16 / 2511 / 17
serious
Total, serious adverse events
12 / 258 / 17

Outcome results

Primary

Overall Response Rate (ORR)

Calculated based on the evaluable population of patients who received at least 1 dose of therapy. Overall response rate (ORR) is complete response (CR) + partial response (PR) recorded from study entry until disease progression based on RECIST v1.1 criteria. Per RECIST 1.1 for target lesions: CR is complete disappearance of all target lesions and PR is at least a 30% decrease in the sum of longest diameter (LD) of target lesions, taking as reference baseline sum LD. PR or better overall response assumes at a minimum incomplete response/stable disease (SD) for the evaluation of non-target lesions and absence of new lesions.

Time frame: Up to 22 months

Population: Evaluable population of patients who received at least 1 dose of therapy. No statistical analysis is performed.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Head and Neck Cancer CohortOverall Response Rate (ORR)6 Participants
Non-Small Cell Lung Cancer CohortOverall Response Rate (ORR)3 Participants
Secondary

Duration of Response

Duration of response is measured from date of first confirmed response until date of disease progression.

Time frame: Up to 22 months

ArmMeasureValue (MEDIAN)
Head and Neck Cancer CohortDuration of Response3.7 Months
Non-Small Cell Lung Cancer CohortDuration of Response7.6 Months
Secondary

Number of Participants With Adverse Events

The adverse events were graded as per common terminology criteria for adverse events(CTCAE) version 4.0. For a detailed list of adverse events refer to the adverse event module.

Time frame: Adverse events were collected from first dose of study treatment up to 30 days after last dose of treatment, up to 21 months (number of treatment given ranged from 1 cycle to 30 cycles).

Population: All enrolled patients are included. No statistical analysis is performed.

ArmMeasureGroupValue (NUMBER)
Head and Neck Cancer CohortNumber of Participants With Adverse EventsCTCAE grade 3 or 423 participants
Head and Neck Cancer CohortNumber of Participants With Adverse EventsCTCAE grade 1 or 225 participants
Non-Small Cell Lung Cancer CohortNumber of Participants With Adverse EventsCTCAE grade 1 or 217 participants
Non-Small Cell Lung Cancer CohortNumber of Participants With Adverse EventsCTCAE grade 3 or 417 participants
Secondary

Overall Survival (OS)

OS is the duration from study entry to death. Participants last known to be alive are censored at date of last contact.

Time frame: Up to 41 months

Population: All enrolled patients are included. Statistical analysis was not performed.

ArmMeasureValue (MEDIAN)
Head and Neck Cancer CohortOverall Survival (OS)8.6 Months
Non-Small Cell Lung Cancer CohortOverall Survival (OS)11.8 Months
Secondary

Progression Free Survival (PFS)

PFS was defined as duration of time from the first dose of study drug to the first documentation of Progressive Disease (PD) by investigator assessment using RECIST 1.1 or death on study due to any cause on or before the data cutoff date, whichever occurred first. PD: \>=20% increase (\>=5 mm absolute increase) in the sum of target lesion measurements, compared to the smallest sum on study (including baseline), or unequivocal progression of non-target lesions, evaluated as a whole, such that it is clear that treatment has failed, and disease is progressing, regardless of the status of the target lesions.

Time frame: Up to 23 months

Population: All patients were included in the analysis. Statistical analysis was not performed.

ArmMeasureValue (MEDIAN)
Head and Neck Cancer CohortProgression Free Survival (PFS)2.6 Months
Non-Small Cell Lung Cancer CohortProgression Free Survival (PFS)3.0 Months
Other Pre-specified

Association of Biomarkers With Overall Response Rate - EphrinB2 Positive/HPV-negative

Overall response rate (ORR) is complete response (CR) + partial response (PR) recorded from study entry until disease progression based on RECIST v1.1 criteria. Per RECIST 1.1 for target lesions: CR is complete disappearance of all target lesions and PR is at least a 30% decrease in the sum of longest diameter (LD) of target lesions, taking as reference baseline sum LD. PR or better overall response assumes at a minimum incomplete response/stable disease (SD) for the evaluation of non-target lesions and absence of new lesions.

Time frame: Up to 22 months

Population: Only the Head and Neck cancer cohort is being reported. No statistical analysis performed. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Response Rate - EphrinB2 Positive/HPV-negative5 Participants
Other Pre-specified

Association of Biomarkers With Overall Response Rate - EphrinB2 Status

Overall response rate (ORR) is complete response (CR) + partial response (PR) recorded from study entry until disease progression based on RECIST v1.1 criteria. Per RECIST 1.1 for target lesions: CR is complete disappearance of all target lesions and PR is at least a 30% decrease in the sum of longest diameter (LD) of target lesions, taking as reference baseline sum LD. PR or better overall response assumes at a minimum incomplete response/stable disease (SD) for the evaluation of non-target lesions and absence of new lesions.

Time frame: Up to 22 months

Population: Only the Head and Neck cancer cohort is being reported. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Response Rate - EphrinB2 StatusEphrinB2 Negative who achieved CR/PR9 Participants
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Response Rate - EphrinB2 StatusEphrinB2 Positive who achieved CR/PR6 Participants
p-value: 0.057Fisher Exact
Other Pre-specified

Association of Biomarkers With Overall Response Rate - PD-L1 Status

Overall response rate (ORR) is complete response (CR) + partial response (PR) recorded from study entry until disease progression based on RECIST v1.1 criteria. Per RECIST 1.1 for target lesions: CR is complete disappearance of all target lesions and PR is at least a 30% decrease in the sum of longest diameter (LD) of target lesions, taking as reference baseline sum LD. PR or better overall response assumes at a minimum incomplete response/stable disease (SD) for the evaluation of non-target lesions and absence of new lesions.

Time frame: Up to 22 months

Population: Only the Head and Neck cancer cohort is being reported. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Response Rate - PD-L1 StatusPD-L1 Negative who achieved CR/PR3 Participants
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Response Rate - PD-L1 StatusPD-L1 Positive who achieved CR/PR3 Participants
p-value: 1Fisher Exact
Other Pre-specified

Association of Biomarkers With Overall Survival (OS) - EphrinB2

OS was calculated from study entry to date of death. Participants last known to be alive are censored at date of last contact.

Time frame: Up to 24 months

Population: Only the Head and Neck cancer cohort is being reported. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureGroupValue (MEDIAN)
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Survival (OS) - EphrinB2EphrinB2 Negative7.0 Months
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Survival (OS) - EphrinB2EphrinB2 Positive10.9 Months
p-value: 0.83Log Rank
Other Pre-specified

Association of Biomarkers With Overall Survival (OS) - EphrinB2 Positive/HPV-negative

OS was calculated from study entry to date of death. Participants last known to be alive are censored at date of last contact.

Time frame: Up to 34 months

Population: Only the Head and Neck cancer cohort is being reported. No statistical analysis performed. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureValue (MEDIAN)
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Survival (OS) - EphrinB2 Positive/HPV-negative10.9 Months
Other Pre-specified

Association of Biomarkers With Overall Survival (OS) - HPV Status

OS was calculated from study entry to date of death. Participants last known to be alive are censored at date of last contact.

Time frame: Up to 34 months

Population: Only the Head and Neck cancer cohort is being reported. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureGroupValue (MEDIAN)
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Survival (OS) - HPV StatusHPV Negative8.6 Months
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Survival (OS) - HPV StatusHPV Positive7.0 Months
p-value: 0.83Log Rank
Other Pre-specified

Association of Biomarkers With Overall Survival (OS) - P16 Status

OS was calculated from study entry to date of death. Participants last known to be alive are censored at date of last contact.

Time frame: Up to 34 months

Population: Only the Head and Neck cancer cohort is being reported. 10 participants were P16-positive, 15 participants were P16-negative, for a total of 25 participants. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureGroupValue (MEDIAN)
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Survival (OS) - P16 StatusP16 Negative8.6 Months
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Survival (OS) - P16 StatusP16 Positive7.0 Months
p-value: 0.83Log Rank
Other Pre-specified

Association of Biomarkers With Overall Survival (OS) - PD-L1 Status

OS was calculated from study entry to date of death. Participants last known to be alive are censored at date of last contact.

Time frame: Up to 34 months

Population: Only the Head and Neck cancer cohort is being reported. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureGroupValue (MEDIAN)
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Survival (OS) - PD-L1 StatusPD-L1 Negative12.3 Months
Head and Neck Cancer CohortAssociation of Biomarkers With Overall Survival (OS) - PD-L1 StatusPD-L1 Positive7.6 Months
p-value: 0.47Log Rank
Other Pre-specified

Association of Biomarkers With Progression Free Survival (PFS) - EphrinB2 Positive/HPV-negative

From study entry to the date of first documented disease progression or death due to any cause, whichever came first.

Time frame: Up to 11 months

Population: Only the Head and Neck cancer cohort is being reported. No statistical analysis performed. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureValue (MEDIAN)
Head and Neck Cancer CohortAssociation of Biomarkers With Progression Free Survival (PFS) - EphrinB2 Positive/HPV-negative3.2 Months
Other Pre-specified

Association of Biomarkers With Progression Free Survival (PFS) - EphrinB2 Status

From study entry to the date of first documented disease progression or death due to any cause, whichever came first.

Time frame: Up to 11 months

Population: Only the Head and Neck cancer cohort is being reported. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureGroupValue (MEDIAN)
Head and Neck Cancer CohortAssociation of Biomarkers With Progression Free Survival (PFS) - EphrinB2 StatusEphrinB2 Negative2.5 Months
Head and Neck Cancer CohortAssociation of Biomarkers With Progression Free Survival (PFS) - EphrinB2 StatusEphrinB2 Positive2.9 Months
p-value: 0.11Log Rank
Other Pre-specified

Association of Biomarkers With Progression Free Survival (PFS) - HPV Status

From study entry to the date of first documented disease progression or death due to any cause, whichever came first.

Time frame: Up to 11 months

Population: Only the Head and Neck cancer cohort is being reported. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureGroupValue (MEDIAN)
Head and Neck Cancer CohortAssociation of Biomarkers With Progression Free Survival (PFS) - HPV StatusHPV Negative2.5 Months
Head and Neck Cancer CohortAssociation of Biomarkers With Progression Free Survival (PFS) - HPV StatusHPV Positive2.6 Months
p-value: 0.83Log Rank
Other Pre-specified

Association of Biomarkers With Progression Free Survival (PFS) - P16 Status

From study entry to the date of first documented disease progression or death due to any cause, whichever came first.

Time frame: Up to 11 months

Population: Only the Head and Neck cancer cohort is being reported. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureGroupValue (MEDIAN)
Head and Neck Cancer CohortAssociation of Biomarkers With Progression Free Survival (PFS) - P16 StatusP16 Negative2.5 Months
Head and Neck Cancer CohortAssociation of Biomarkers With Progression Free Survival (PFS) - P16 StatusP16 Positive2.6 Months
p-value: 0.83Log Rank
Other Pre-specified

Association of Biomarkers With Progression Free Survival (PFS) - PD-L1 Status

From study entry to the date of first documented disease progression or death due to any cause, whichever came first.

Time frame: Up to 11 months

Population: Only the Head and Neck cancer cohort is being reported. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureGroupValue (MEDIAN)
Head and Neck Cancer CohortAssociation of Biomarkers With Progression Free Survival (PFS) - PD-L1 StatusPD-L1 Negative2.8 Months
Head and Neck Cancer CohortAssociation of Biomarkers With Progression Free Survival (PFS) - PD-L1 StatusPD-L1 Positive2.5 Months
p-value: 0.96Log Rank
Other Pre-specified

Association of Biomarker With Overall Response Rate - HPV Status

Overall response rate (ORR) is complete response (CR) + partial response (PR) recorded from study entry until disease progression based on RECIST v1.1 criteria. Per RECIST 1.1 for target lesions: CR is complete disappearance of all target lesions and PR is at least a 30% decrease in the sum of longest diameter (LD) of target lesions, taking as reference baseline sum LD. PR or better overall response assumes at a minimum incomplete response/stable disease (SD) for the evaluation of non-target lesions and absence of new lesions.

Time frame: Up to 22 months

Population: Only the Head and Neck cancer cohort is being reported. No specimens were collected for the non-small cell lung cancer cohort.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Head and Neck Cancer CohortAssociation of Biomarker With Overall Response Rate - HPV StatusHPV Negative who achieved CR/PR5 Participants
Head and Neck Cancer CohortAssociation of Biomarker With Overall Response Rate - HPV StatusHPV Positive who achieved CR/PR1 Participants
p-value: 0.34Fisher Exact
Other Pre-specified

Association of Biomarker With Overall Response Rate - P16 Status

Overall response rate (ORR) is complete response (CR) + partial response (PR) recorded from study entry until disease progression based on RECIST v1.1 criteria. Per RECIST 1.1 for target lesions: CR is complete disappearance of all target lesions and PR is at least a 30% decrease in the sum of longest diameter (LD) of target lesions, taking as reference baseline sum LD. PR or better overall response assumes at a minimum incomplete response/stable disease (SD) for the evaluation of non-target lesions and absence of new lesions.

Time frame: Up to 22 months

Population: Only the Head and Neck cancer cohort is being reported. No specimens were collected in the non-small cell lung cancer cohort.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Head and Neck Cancer CohortAssociation of Biomarker With Overall Response Rate - P16 StatusP16 Negative who achieved CR/PR5 Participants
Head and Neck Cancer CohortAssociation of Biomarker With Overall Response Rate - P16 StatusP16 Positive who achieved CR/PR1 Participants
p-value: 0.34Fisher Exact

Source: ClinicalTrials.gov ยท Data processed: Feb 15, 2026