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A Study of CDX-3379 and Cetuximab and in Patients With Advanced Head and Neck Squamous Cell Carcinoma

A Phase 2, Multicenter, Open-label Study to Evaluate the Efficacy and Safety of CDX-3379 in Combination With Cetuximab in Patients With Advanced Head and Neck Squamous Cell Carcinoma

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03254927
Enrollment
30
Registered
2017-08-21
Start date
2018-03-27
Completion date
2020-12-16
Last updated
2023-04-03

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

Conditions

Advanced Head and Neck Squamous Cell Carcinoma

Keywords

Erbitux, Cetuximab, Oral Cancer, Oropharyngeal cancer, Laryngeal cancer, Head and Neck Squamous Cell Carcinoma

Brief summary

This is a study to determine the clinical benefit (how well the drug works), safety and tolerability of combining CDX-3379 and cetuximab. The study will enroll patients with advanced head and neck squamous cell carcinoma who have previously received cetuximab and progressed.

Detailed description

CDX-3379 is a fully human monoclonal antibody that binds to a molecule called human epidermal growth factor receptor 3 (HER3 or ErbB3) found on certain cells and may act to promote anti-tumor effects. Cetuximab is a human monoclonal antibody that blocks EGFR, a protein receptor that regulates cell growth. This study will evaluate the safety, tolerability and efficacy of CDX-3379 in combination with cetuximab in patients with advanced head and neck squamous cell carcinoma who have previously received cetuximab and progressed. Eligible patients that enroll in the study will be given the dose of 12 mg/kg CDX-3379 once every 3 weeks in combination with 400 mg/m2 cetuximab on the first day followed by weekly doses of 250 mg/m2 cetuximab. Up to 45 patients will be enrolled. All patients enrolled in the study will be closely monitored to determine if there is a response to the treatment as well as for any side effects that may occur.

Interventions

DRUGCDX-3379 and cetuximab

Dose: 12 mg/kg CDX-3379 once every 3 weeks in combination with 400 mg/m2 cetuximab on the first day followed by weekly doses of 250 mg/m2 cetuximab.

Sponsors

Celldex Therapeutics
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

1. Histologically or cytologically confirmed head and neck squamous cell carcinoma. 2. Human papilloma virus (HPV) negative tumor. 3. Prior treatment with a check-point inhibitor targeting PD-1, unless not a candidate. 4. Prior treatment with cetuximab with tumor progression during or within 6 months after completing treatment. 5. Measurable disease. 6. Life expectancy ≥ 12 weeks. 7. If of childbearing potential (male or female), agrees to practice an effective form of contraception during study treatment and for at least 6 months following last treatment. 8. Willingness to undergo a tumor biopsy prior to starting treatment (or if biopsy is not feasible, provide archival tissue).

Exclusion criteria

1. Previous treatment with CDX-3379 or other anti-ErbB3 targeted agents. 2. Nasal, paranasal sinus, or nasopharyngeal carcinoma, aside from WHO Type I and II (keratinizing, non-EBV positive) nasopharyngeal carcinoma which will be allowed. 3. Major surgery within 4 weeks prior to first dose of study treatment. 4. Chemotherapy within 21 days or at least 5 half-lives (whichever is shorter) prior to first dose of study treatment. 5. Monoclonal based therapies within 4 weeks (excluding cetuximab) and all other immunotherapy within 2 weeks prior to first dose of study treatment. 6. Other prior malignancy, active within 3 years, except for localized prostate cancer, cervical carcinoma in situ, non-melanomatous carcinoma of the skin, stage 1 differentiated thyroid cancer or ductal carcinoma in situ of the breast. 7. Active, untreated central nervous system metastases. 8. Active autoimmune disease or documented history of autoimmune disease. 9. Significant cardiovascular disease including CHF or poorly controlled hypertension.

Design outcomes

Primary

MeasureTime frameDescription
Objective Response RateThe proportion of evaluable patients who achieve a best overall response of complete or partial response according to RECIST 1.1 assessed up to 24 months.The percentage of patients who achieve a complete response or partial response per Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST version 1.1), Complete Response (CR) = disappearance of all target lesions and non-target lesions, Partial Response (PR), \>= 30% decrease in the sum of the longest diameter of target lesions with no progression in non-target lesions and no new lesions.

Secondary

MeasureTime frameDescription
Duration of Response (DOR)First occurrence of a documented objective response to disease progression or death (up to approximately 2 years)The interval from which measurement criteria are first met for Complete Response (CR) or Partial Response (PR) until the first date that progressive disease is objectively documented
Progression-free Survival (PFS)From first dose to the first occurrence of disease progression or death due to any cause (up to approximately 2 years)The time from start of study drug to time of progression or death, whichever occurs first
Clinical Benefit Response (CBR)Every 8 weeks, starting with first dose until disease progression, assessed up to approximately 2 yearsThe percentage of patients who achieve best response of confirmed CR or PR, or stable disease (SD) for at least 12 weeks
Incidence of Adverse Events [Safety and Tolerability]Following at least one dose of study treatment through 30 days after last dose of CDX-3379.Safety and tolerability of CDX-3379 in combination with cetuximab as determined by incidence and severity of adverse events. Percentage of patients reporting one or more adverse events.
Tumor DNA Biomarkers.Tumor tissue is obtained during screening window via single biopsy procedure.Tumor DNA biomarkers will be evaluated and assessed for correlation with clinical efficacy. Objective response rate for subset of patients with FAT1 positive tumor is reported.
Overall Survival (OS)The time from start of study drug to death from any cause (up to approximately 2 years)The time from start of study drug to death

Countries

United States

Participant flow

Participants by arm

ArmCount
CDX-3379 and Cetuximab
During the treatment phase of the study, eligible patients will receive assigned treatments in 3 week cycles until progression. CDX-3379 and cetuximab: Dose: 12 mg/kg CDX-3379 once every 3 weeks in combination with 400 mg/m2 cetuximab on the first day followed by weekly doses of 250 mg/m2 cetuximab.
30
Total30

Baseline characteristics

CharacteristicCDX-3379 and Cetuximab
Age, Continuous62 years
Duration of Metastatic Disease2.2 years
ECOG Performance Status
ECOG 0
4 Participants
ECOG Performance Status
ECOG 1
26 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
4 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
26 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
3 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants
Race (NIH/OMB)
White
25 Participants
Region of Enrollment
United States
30 participants
Sex: Female, Male
Female
4 Participants
Sex: Female, Male
Male
26 Participants
Site of Primary Tumor
Larynx
4 Participants
Site of Primary Tumor
Oral Cavity
11 Participants
Site of Primary Tumor
Other
3 Participants
Site of Primary Tumor
Pharynx/Oropharynx
12 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
26 / 30
other
Total, other adverse events
30 / 30
serious
Total, serious adverse events
13 / 30

Outcome results

Primary

Objective Response Rate

The percentage of patients who achieve a complete response or partial response per Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST version 1.1), Complete Response (CR) = disappearance of all target lesions and non-target lesions, Partial Response (PR), \>= 30% decrease in the sum of the longest diameter of target lesions with no progression in non-target lesions and no new lesions.

Time frame: The proportion of evaluable patients who achieve a best overall response of complete or partial response according to RECIST 1.1 assessed up to 24 months.

ArmMeasureValue (NUMBER)
CDX-3379 and CetuximabObjective Response Rate7 percentage of participants
Secondary

Clinical Benefit Response (CBR)

The percentage of patients who achieve best response of confirmed CR or PR, or stable disease (SD) for at least 12 weeks

Time frame: Every 8 weeks, starting with first dose until disease progression, assessed up to approximately 2 years

ArmMeasureValue (NUMBER)
CDX-3379 and CetuximabClinical Benefit Response (CBR)40 percentage of participants
Secondary

Duration of Response (DOR)

The interval from which measurement criteria are first met for Complete Response (CR) or Partial Response (PR) until the first date that progressive disease is objectively documented

Time frame: First occurrence of a documented objective response to disease progression or death (up to approximately 2 years)

ArmMeasureValue (NUMBER)
CDX-3379 and CetuximabDuration of Response (DOR)NA months
Secondary

Incidence of Adverse Events [Safety and Tolerability]

Safety and tolerability of CDX-3379 in combination with cetuximab as determined by incidence and severity of adverse events. Percentage of patients reporting one or more adverse events.

Time frame: Following at least one dose of study treatment through 30 days after last dose of CDX-3379.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
CDX-3379 and CetuximabIncidence of Adverse Events [Safety and Tolerability]30 Participants
Secondary

Overall Survival (OS)

The time from start of study drug to death

Time frame: The time from start of study drug to death from any cause (up to approximately 2 years)

ArmMeasureValue (MEDIAN)
CDX-3379 and CetuximabOverall Survival (OS)6.6 months
Secondary

Progression-free Survival (PFS)

The time from start of study drug to time of progression or death, whichever occurs first

Time frame: From first dose to the first occurrence of disease progression or death due to any cause (up to approximately 2 years)

ArmMeasureValue (MEDIAN)
CDX-3379 and CetuximabProgression-free Survival (PFS)2.2 months
Secondary

Tumor DNA Biomarkers.

Tumor DNA biomarkers will be evaluated and assessed for correlation with clinical efficacy. Objective response rate for subset of patients with FAT1 positive tumor is reported.

Time frame: Tumor tissue is obtained during screening window via single biopsy procedure.

Population: patients with FAT1 positive tumors

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
CDX-3379 and CetuximabTumor DNA Biomarkers.1 Participants

Source: ClinicalTrials.gov · Data processed: Feb 24, 2026