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Phase I/II Study of Panitumumab, Capecitabine and Oxaliplatin w EBRT for Esophageal Cancer

A Phase I/II Study of Panitumumab, Capecitabine and Oxaliplatin Chemotherapy With External Beam Radiation Therapy for the Treatment of Resectable, Locally Advanced/Unresectable or Metastatic Esophageal Cancer

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00578071
Acronym
POXX
Enrollment
29
Registered
2007-12-20
Start date
2007-12-31
Completion date
2012-06-30
Last updated
2015-07-02

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

Conditions

Cancer of the Esophagus

Keywords

esophageal cancer

Brief summary

The primary purpose of this trial is to define the maximum tolerated and/or recommended phase II dose of the combination of panitumumab, oxaliplatin and capecitabine in patients undergoing radiation therapy for carcinoma of the thoracic esophagus or gastroesophageal junction. An additional primary objective is to describe the frequency and nature of grade III/IV and grade I/II toxicities associated with this regimen. Secondary objectives include describing 1-year disease-free survival and overall survival rates as well as to estimate clinical and pathologic complete response rates associated with this regimen.

Detailed description

This study has a phase I/II design. For this study the administration of panitumumab is considered investigational. Pretreatment: Part of regular cancer care and disease staging includes Chest/Abdomen CT Scan, upper endoscopic ultrasound, PET scan, J-Tube Placement (if clinically indicated), bronchoscopy (per clinician judgment), ECG, and baseline laboratory studies. During Treatment Weeks 1-5.5 of Radiation Therapy(RT)/Chemotherapy: * RT (180 cGy/fx, Mon-Fri) days 1-5, 8-12, 15-19, 22-26, 29-33 and 36-38. * Panitumumab (per dose level) days 1, 15, 29. * Oxaliplatin (per dose level) days 1, 8, 15, 22, 29, 36. * Capecitabine (per dose level M-F) 1-5, 8-12, 15-19, 22-26, 29-33, 36-38.

Interventions

DRUGPanitumumab

Dose per cohort level (3.6, 4.8 or 6.0 mg/kg ), given intravenously (IV) days 1, 15 and 29 of radiation.

DRUGCapecitabine

Dose per cohort level (500, 625 or 825 mg/m2) taken by mouth twice each day of radiation

DRUGOxaliplatin

Dose per cohort level (30, 40, or 50 mg/m2). Given IV one day each week during radiation

Daily for 6 weeks

Sponsors

Amgen
CollaboratorINDUSTRY
Brian Czito
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 82 Years
Healthy volunteers
No

Inclusion criteria

* 18 years of age or older. * Histologically or cytologically documented squamous cell carcinoma or Siewert's classification adenocarcinoma of the esophagus or proximal stomach T1-4, N0-2, M0-1, for which bimodality treatment with chemotherapy and radiation therapy is indicated. * Measurable Disease * ECOG Performance Status 0-1 * Laboratory values must be as follows: * Absolute neutrophil count \> or = 2,000/mm3, * Platelets \> or = 100,000/mm3, * Hemoglobin \> 9.0, * Total bilirubin \<1.5 x institutional upper normal limit, * Serum creatinine \<1.5 x institutional upper normal limit, * AST or ALT \< 3x institutional upper normal limit, * Magnesium equal or higher than institutional lower limit, * Creatinine clearance Estimated \> 40 ml/min, * Calcium \> lower limit of normal. * Not pregnant or lactating. Negative pregnancy test within 72 hours prior to registration (female patients of childbearing potential). Postmenopausal woman must have been amenorrheic for at least 12 months to be considered of non-childbearing potential. * Life expectancy must be \>3 months. * No serious or poorly controlled medical or psychological conditions that could be exacerbated by the treatment or would seriously complicate compliance with the protocol. * Able to swallow capecitabine (whole or crushed tablet or liquid dispersed) or patients may have a G or J tube. * No conditions that would significantly compromise intestinal absorption of the study drugs.

Exclusion criteria

* Tumors extending above the level of the thoracic inlet or beyond 5 cm below the gastroesophageal junction. * Patients with radiographic or bronchoscopic evidence of esophageal perforation. * Patients with known evidence of brain metastases, lymphangitic lung metastases, or carcinomatous meningitis. * Dementia or significantly altered mental status * Major surgery within 4 weeks of the start of study treatment * Prior chemotherapy, radiation therapy, hormonal or biologic therapy within the past 6 months. * Subjects requiring chronic use of immunosuppressive agents (e.g., methotrexate, cyclosporine, corticosteroids) * Currently requiring medications that may interact with the metabolism or disposition of capecitabine/5-FU: dipyridamole, folinic acid, allopurinol, trimethoprim, misonidazole, metoclopramide, flucytosine or cimetidine. * Hypersensitivity to platinum containing compounds or capecitabine or any of the excipients of this product. Prior unanticipated severe reaction to fluoropyrimidine/platinum therapy, or known sensitivity to 5-fluorouracil/platinum containing compounds. * Serious, uncontrolled, concurrent infection(s). * History of other disease, metabolic dysfunction, physical examination finding, or clinical laboratory finding giving reasonable suspicion of a disease or condition that contraindicates the use of an investigational drug or that might affect the interpretation of the results of the study or render the subject at high risk from treatment complications. * Treatment for other carcinomas within the last five years, except cured non-melanoma skin and treated in-situ cervical cancer. * Peripheral neuropathy \> grade 1 * Any of the following within 24 weeks before randomization: clinically significant cardiovascular disease (including myocardial infarction, unstable angina, symptomatic congestive heart failure, serious uncontrolled cardiac arrhythmia). * Uncontrolled gastrointestinal ulcer within 28 days of randomization * History of interstitial pneumonitis or pulmonary fibrosis, or evidence of interstitial pneumonitis or pulmonary fibrosis on baseline chest X-ray or CT-scan * Preexisting known bleeding diathesis or coagulopathy * Plans to continue on or use of ketoconazole, phenytoin, phenobarbital, carbamazepine, rifampin, rifabutin or St. John's Wort, 14 days prior to randomization. * History of hypersensitivity to tetracyclines * Subject known to be human immunodeficiency virus positive * Subjects known to have chronic or active hepatitis B or C infection

Design outcomes

Primary

MeasureTime frame
Panitumumab Maximum Tolerated Dose in Milligrams (mg)60 days
Number of Participants With Dose-limiting Toxicities (DLTs)Within 30 days of the last day of radiation

Secondary

MeasureTime frameDescription
Overall Survival Rates for the Patients Studied on This Protocol.One yearNumber of patients alive one year after completing study protocol treatment.
Pathological Complete Response Rates Associated With This Regimen.90 daysAbsence of residual viable tumor cells at the time of surgical resection of the esophagus performed 7-9 weeks following completion of chemoradiotherapy.

Countries

United States

Participant flow

Participants by arm

ArmCount
Chemoradiation
Panitumumab, oxiplatin, capecitabine, radiation therapy
29
Total29

Baseline characteristics

CharacteristicChemoradiation
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
6 Participants
Age, Categorical
Between 18 and 65 years
23 Participants
Age, Continuous58.97 years
STANDARD_DEVIATION 10.32
Region of Enrollment
United States
29 participants
Sex: Female, Male
Female
1 Participants
Sex: Female, Male
Male
28 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
29 / 29
serious
Total, serious adverse events
9 / 29

Outcome results

Primary

Number of Participants With Dose-limiting Toxicities (DLTs)

Time frame: Within 30 days of the last day of radiation

Population: All patients who received chemoradiation.

ArmMeasureValue (NUMBER)
ChemoradiationNumber of Participants With Dose-limiting Toxicities (DLTs)2 participants
Primary

Panitumumab Maximum Tolerated Dose in Milligrams (mg)

Time frame: 60 days

Population: Per protocol and intention to treat (ITT).

ArmMeasureValue (NUMBER)
ChemoradiationPanitumumab Maximum Tolerated Dose in Milligrams (mg)3.6 mg
Secondary

Overall Survival Rates for the Patients Studied on This Protocol.

Number of patients alive one year after completing study protocol treatment.

Time frame: One year

ArmMeasureValue (NUMBER)
ChemoradiationOverall Survival Rates for the Patients Studied on This Protocol.18 participants
Secondary

Pathological Complete Response Rates Associated With This Regimen.

Absence of residual viable tumor cells at the time of surgical resection of the esophagus performed 7-9 weeks following completion of chemoradiotherapy.

Time frame: 90 days

Population: Surgery was determined according to risk factors, patient consent and resectability.

ArmMeasureValue (NUMBER)
ChemoradiationPathological Complete Response Rates Associated With This Regimen.40 percentage of participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026