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PRIME: Panitumumab Randomized Trial In Combination With Chemotherapy for Metastatic Colorectal Cancer to Determine Efficacy

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ClinicalTrials.gov Identifier: NCT00364013
Recruitment Status : Completed
First Posted : August 15, 2006
Results First Posted : March 28, 2014
Last Update Posted : November 7, 2022
Sponsor:
Information provided by (Responsible Party):
Amgen

Study Description
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Brief Summary:
The purpose of this study is to determine the treatment effect of panitumumab in combination with FOLFOX compared to FOLFOX alone as first line therapy for metastatic colorectal cancer

Condition or disease Intervention/treatment Phase
Metastatic Colorectal Cancer Drug: Panitumumab Drug: FOLFOX regimen Phase 3

Study Design
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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 1183 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Randomized, Multicenter, Phase 3 Study to Compare the Efficacy of Panitumumab in Combination With Oxaliplatin/ 5-fluorouracil/ Leucovorin to the Efficacy of Oxaliplatin/ 5-fluorouracil/ Leucovorin Alone in Patients With Previously Untreated Metastatic Colorectal Cancer
Actual Study Start Date : August 1, 2006
Actual Primary Completion Date : August 1, 2009
Actual Study Completion Date : March 22, 2013

Resource links provided by the National Library of Medicine

Drug Information available for: Panitumumab

Arms and Interventions
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Arm Intervention/treatment
Experimental: FOLFOX + Panitumumab
Participants received panitumumab, 6 mg/kg on Day 1 and FOLFOX chemotherapy regimen on Days 1 and 2 of each 14-day cycle until disease progression or unacceptable toxicity.
 Drug: Panitumumab
Panitumumab 6 mg/kg over on Day 1 of each 14-day cycle, just prior to the administration of chemotherapy.
Other Name: Vectibix®

Drug: FOLFOX regimen
The FOLFOX regimen consisted of oxaliplatin 85 mg/m^2 intravenous (IV) infusion on Day 1, leucovorin, 200 mg/m^2 (racemate) on Days 1 and 2 and 5-fluorouracil 400 mg/m^2 IV bolus followed by 600 mg/m^2 IV infusion over 22 hours on Days 1 and 2. Each cycle was 14 days.
Active Comparator: FOLFOX
Participants received FOLFOX chemotherapy regimen on Days 1 and 2 of each 14-day cycle until disease progression or until unacceptable toxicity.
 Drug: FOLFOX regimen
The FOLFOX regimen consisted of oxaliplatin 85 mg/m^2 intravenous (IV) infusion on Day 1, leucovorin, 200 mg/m^2 (racemate) on Days 1 and 2 and 5-fluorouracil 400 mg/m^2 IV bolus followed by 600 mg/m^2 IV infusion over 22 hours on Days 1 and 2. Each cycle was 14 days.


Outcome Measures
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Primary Outcome Measures :
  1. Progression-free Survival [ Time Frame: From randomization until the data cutoff date of 30 September 2008. Maximum follow-up time was 109 weeks. ]
    Progression-free survival (PFS), assessed by central radiological assessment, was defined as the time from randomization to disease progression per modified response evaluation criteria in solid tumors (RECIST) criteria or death. Participants who were alive but did not meet criteria for progression by the data cutoff date were censored at their last evaluable disease assessment date. Progressive disease is defined as a ≥ 20% increase in the size of target lesions or unequivocal progression of existing non-target lesions or any new lesions.


Secondary Outcome Measures :
  1. Overall Survival [ Time Frame: From randomization until the data cutoff date of 28 August 2009. Maximum time on follow-up was 153 weeks. ]
    The definition of overall survival is the time from randomization to death; participants who were alive at the analysis data cutoff were censored at their last contact date.

  2. Percentage of Participants With an Objective Response [ Time Frame: Every 8 weeks until disease progression up to the data cut-off date of 30 September 2008; Maximum follow-up time was 109 weeks. ]
    Participants were evaluated for tumor response per the modified Response Evaluation Criteria in Solid Tumors (RECIST) criteria every 8 weeks until disease progression. Objective response by central radiological assessment was defined as the incidence of either a confirmed complete or partial response (CR or PR) while on the first-line treatment, as determined by blinded independent central review and confirmed no less than 4-weeks after the criteria for response are first met. CR: Disappearance of all target and non-target lesions and no new lesions. PR: At least a 30% decrease in the sum of the longest diameter of target lesions and no progression of non-target or no new lesions, or, disappearance of all target lesions and the persistence of ≥ 1 non-target lesion not qualifying for either CR or progressive disease. Participants without a post-baseline assessment were considered non-responders.

  3. Time to Progression [ Time Frame: From randomization until the data cut-off date of 30 September 2008; Maximum follow-up time was 109 weeks. ]
    Time to progression was defined as time from randomization date to date of disease progression per the modified RECIST criteria.

  4. Duration of Response [ Time Frame: Every 8 weeks until disease progression up to the data cut-off date of 30 September 2008; Maximum follow-up time was 109 weeks. ]
    Duration of response was calculated only for those participants with a confirmed CR or PR, as the time from the first CR or PR (subsequently confirmed within no less than 4 weeks) to first observed disease progression per modified RECIST criteria, based on a blinded central review.

  5. Number of Participants With Adverse Events (AEs) [ Time Frame: From randomization until the data cut-off date of 28 August 2009; Maximum time on follow-up was 153 weeks. ]
    A serious adverse event (SAE) is defined as an AE that • is fatal • is life threatening • requires in-patient hospitalization or prolongation of existing hospitalization • results in persistent or significant disability/incapacity • is a congenital anomaly/birth defect • other significant medical hazard. The relationship of the adverse event to the study treatment was assessed by the Investigator by means of the question: "Is there a reasonable possibility that the event may have been caused by the study treatment?"


Eligibility Criteria
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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Man or woman at least 18 years old
  • Diagnosis of metastatic colorectal cancer
  • At least 1 uni-dimensionally measurable lesion of at least 20 mm per modified RECIST
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2
  • Paraffin-embedded tumor tissue from the primary tumor or metastasis available for central analyse Exclusion Criteria:
  • History or known presence of central nervous system (CNS) metastases
  • History of another primary cancer, except: Curatively treated in situ cervical cancer, or Curatively resected non-melanoma skin cancer, or Other primary solid tumor curatively treated with no known active disease present and no treatment administered for ≥ 5 years before randomization
  • Prior chemotherapy or systemic therapy for the treatment of metastatic colorectal carcinoma except: adjuvant fluoropyrimidine-based chemotherapy or prior fluoropyrimidine therapy administered solely for the purpose of radiosensitization
  • Prior oxaliplatin therapy
  • Prior anti-epidermal growth factor receptor (EGFr) antibody therapy (eg, cetuximab) or treatment with small molecule EGFr inhibitors (eg, erlotinib)
  • Clinically significant cardiovascular disease (including myocardial infarction, unstable angina, symptomatic congestive heart failure, serious uncontrolled cardiac arrhythmia) 1 year prior to randomization History of interstitial lung disease (eg, pneumonitis or pulmonary fibrosis) or evidence of interstitial lung disease on baseline chest computed tomography (CT) scan
  • Active inflammatory bowel disease or other bowel disease causing chronic diarrhea (defined as > Common terminology criteria (CTC) grade 2 [CTCAE version 3.0])
  • Peripheral sensory neuropathy with functional impairment
Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00364013


Sponsors and Collaborators
Amgen
Investigators
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Study Director: MD Amgen
More Information
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Additional Information:

Publications:

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

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Responsible Party: Amgen
ClinicalTrials.gov Identifier: NCT00364013    
Other Study ID Numbers: 20050203
First Posted: August 15, 2006    Key Record Dates
Results First Posted: March 28, 2014
Last Update Posted: November 7, 2022
Last Verified: November 2022
Keywords provided by Amgen:
Oncology
Cancer
metastatic colorectal cancer
EGFr
 Panitumumab
Clinical Trail
Amgen
Additional relevant MeSH terms:
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Colorectal Neoplasms
Intestinal Neoplasms
Gastrointestinal Neoplasms
Digestive System Neoplasms
Neoplasms by Site
Neoplasms
Digestive System Diseases
 Gastrointestinal Diseases
Colonic Diseases
Intestinal Diseases
Rectal Diseases
Panitumumab
Antineoplastic Agents, Immunological
Antineoplastic Agents