Cetuximab With Radiotherapy for Locally Advanced Squamous Cell Carcinoma of the Head and Neck in Chinese Subjects

Study Overview
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Brief Summary
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Primary objective: to assess the antitumor activity and safety profile of cetuximab when given in combination with radiotherapy (RT) for the treatment of locally advanced squamous cell carcinoma of the head and neck (SCCHN) in Chinese subjects. Secondary objective: to assess the pharmacokinetic (PK) profile and immunogenicity of cetuximab in Chinese subjects. Further objective: to identify for cetuximab potential predictive biomarkers of response and safety.

Official Title
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Open-label, Single-arm, Multicenter, Phase III Trial to Assess the Antitumor Activity and Safety of Cetuximab When Given in Combination With Radiotherapy for the Treatment of Locally Advanced Squamous Cell Carcinoma of the Head and Neck in Chinese Subjects

Conditions
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Squamous Cell Carcinoma of the Head and Neck

Intervention / Treatment
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* Biological: Cetuximab + concomitant boost radiotherapy


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Inpatient greater than or equal to (>=) 18 years of age Pathologically proven squamous cell carcinoma arising in the oropharynx, hypopharynx or larynx Stage III or IV disease with an expected survival of at least 12 months Medically suitable to withstand a course of concomitant boost RT Presence of at least 1 bi-dimensionally measurable lesion identified either by computed tomography (CT) scan or magnetic resonance imaging (MRI) according to modified World Health Organization (WHO) criteria Karnofsky Performance Status (KPS) >=80 at trial entry Neutrophils >=1.5*10^9/Liter (L), platelet count >= 100*10^9/L, hemoglobin >= 90 gram/liter (g/L) Total bilirubin less than or equal to (<=) 2*upper limit of normal (ULN); aspartate aminotransferase (AST) and alanine aminotransferase (ALT) <= 3*ULN Serum creatinine <=133 micromole/liter (mcmol/L) Serum calcium within normal range Effective contraception if procreative potential exists (applicable to both male and female subjects) Chinese with Chinese citizenship Signed written informed consent Exclusion Criteria: Evidence of distant metastatic disease Squamous cell carcinoma arising in the nasopharynx or oral cavity Receipt of prior systemic chemotherapy within the last 3 years Previous surgery for the tumor under study other than biopsy Receipt of prior RT to the head and neck Currently receiving RT as part of a postoperative regimen following primary surgical resection Planned neck dissection after trial RT Active infection (infection requiring IV antibiotics), including active tuberculosis, or known and declared human immunodeficiency virus (HIV) Uncontrolled diabetes mellitus, pulmonary fibrosis, acute pulmonary disorder, interstitial pneumonia, cardiac failure or liver failure Uncontrolled hypertension defined as systolic blood pressure >=180 millimeter of mercury (mmHg) and/or diastolic blood pressure >=130 mmHg under resting conditions Pregnancy (absence to be confirmed by serum beta human chorionic gonadotrophin [beta-HCG] test) or breastfeeding Concomitant chronic systemic immune therapy or hormonal therapy as cancer therapy Other concomitant anticancer therapies Documented or symptomatic brain or leptomeningeal metastasis Clinically relevant coronary artery disease or history of myocardial infarction in the last 12 months or high risk of uncontrolled arrhythmia or uncontrolled cardiac insufficiency Previous treatment with monoclonal antibody therapy, other signal transduction inhibitors or epidermal growth factor receptor (EGFR) targeting therapy Evidence of previous other malignancy within the last 5 years Intake of any investigational medication within 30 days before trial entry Other protocol-defined exclusion criteria may apply

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Cetuximab<br>All eligible subjects will receive cetuximab treatment only during week 1 of the treatment course and concomitant cetuximab and boost radiotherapy (RT) during week two to week seven of the treatment course | Biological: Cetuximab + concomitant boost radiotherapy<br>* Cetuximab 400 milligram/square meter (mg/m^2) intravenous (IV) infusion over 120 minutes for 1 week, subsequently followed by 250 mg/m^2 IV infusion over 60 minutes, from week 2 to 7 along with concomitant boost radiotherapy: 72.0 Gray (Gy) total for 42 fractions in 6 weeks, initially Once-daily fractions: 32.4 Gy in 18 fractions of 1.8 Gy for 3.6 weeks (5 fractions/week), followed by Twice-daily fractions 39.6 Gy in 24 fractions for 2.4 weeks: morning dose 1.8 Gy/fraction for a total of 12 fractions 5 fractions/week; evening dose 1.5 Gy/fraction for a total of 12 fractions 5 fractions/week. Doses are separated by at least a 6-hour interval<br>* Other names: Erbitux®;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Best Overall Response (BOR) | Best overall (objective) response was defined as the occurrence of complete response (CR) or partial response (PR) based on the investigator's assessment according to modified World Health Organization (WHO) criteria confirmed at a repeat assessment performed no less than 28 days after the criteria for response were first met. CR was defined as disappearance of all index lesions. PR was defined as a 50% or more decrease in the sum of the products of diameters (SOPD) of index lesions compared to the baseline SOPD, with no evidence of PD. | Baseline until the date of first documented progression or discontinuation from the study due to any cause, assessed every 3 months following the 8 weeks after the end of RT visit until the end of trial (EOT) visit | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Progression-Free Survival (PFS) | Progression-free survival was defined as the duration (in months) from first administration of trial treatment to first observation of PD (radiological or clinical, if radiological PD is not available), or death due to any cause. The PFS time of participants without observation of PD but death occurring after two or more missed consecutive tumor assessments (i.e. two-fold scheduled time interval of two consecutive tumor assessments) was censored on the date of last tumor assessment or first administration of trial treatment (whichever was later). | Baseline up to disease progression or withdrawal or 12 weeks after the last radiotherapy of the last participant | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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antitumor activity, safety, cetuximab in combination with radiotherapy, locally advanced squamous cell head & neck carcinoma