Study of AMG 706 in Subjects With Advanced Gastrointestinal Stromal Tumors (GISTs)

This study has been completed.
Information provided by (Responsible Party):
Amgen Identifier:
First received: August 18, 2004
Last updated: April 25, 2013
Last verified: April 2013
This study will determine the safety and effectiveness of AMG 706 in patients with advanced GIST.

Condition Intervention Phase
Gastrointestinal Cancer
Drug: AMG 706
Phase 2

Amgen has indicated that access to an investigational treatment associated with this study is available outside the clinical trial.  

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: An Open Label Study of AMG 706 in Subjects With Advanced Gastrointestinal Stromal Tumors (GISTs) Who Developed Progressive Disease or Relapsed While on Imatinib Mesylate

Resource links provided by NLM:

Further study details as provided by Amgen:

Primary Outcome Measures:
  • Objective response rate as defined using modified RECIST criteria. [ Time Frame: 48 weeks treatment or until progressive disease, or unacceptable toxicity ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Progression-free survival [ Time Frame: time from randomization to progressive disease ] [ Designated as safety issue: No ]
  • Overall survival [ Time Frame: time to death ] [ Designated as safety issue: No ]
  • Time to progression [ Time Frame: time from response to progressive disease ] [ Designated as safety issue: No ]
  • Time to response [ Time Frame: time from first treatment to response ] [ Designated as safety issue: No ]
  • Patient-reported outcomes [ Time Frame: quality of life ] [ Designated as safety issue: No ]
  • Use of opioid analgesics after minimal 6 months treatment [ Time Frame: narcotics usage during study ] [ Designated as safety issue: No ]
  • Objective response by PET and tumor size/density changes at week 8 [ Time Frame: response rate at week 8 ] [ Designated as safety issue: No ]
  • Objective response by size changes and/or target tumor density changes at week 8 [ Time Frame: response rate at week 8 ] [ Designated as safety issue: No ]
  • Safety Endpoints: Incidence of adverse events (including all, serious, grade 3, grade 4 and treatment related) [ Time Frame: for duration of study ] [ Designated as safety issue: Yes ]
  • Duration of response [ Time Frame: time to respone to progression ] [ Designated as safety issue: No ]
  • Palliative response [ Time Frame: amelioration of symptoms ] [ Designated as safety issue: No ]
  • Pharmacokinetic Endpoints: 1. The AMG 706 PK parameters (Cmax, t1/2, AUC0-24, C24); 2. To explore the PK/PD relationships [ Time Frame: during specific study timepoints ] [ Designated as safety issue: No ]

Enrollment: 138
Study Start Date: October 2004
Study Completion Date: June 2008
Primary Completion Date: June 2006 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
AMG 125 mg daily continuously
Drug: AMG 706
AMG 706 125 mg daily for 48 weeks, or until progressive disease or unacceptable toxicity.

Detailed Description:
Expanded Access: Amgen provides expanded access for this clinical trial. Contact the Amgen Call Center (866-572-6436) for more information.

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria

  • Age ≥ 18 years;
  • Disease progression per Response Evaluation Criteria in Solid Tumors (RECIST) during previous treatment with imatinib mesylate at least 600 mg daily for at least 8 weeks, as per two independently assessed prestudy computerized tomography (CT) scans;
  • Presence of at least one measurable (per RECIST)
  • Progressing tumor lesion not previously treated with radiotherapy or embolization and evaluable by CT scan or magnetic resonance imaging (MRI);
  • Karnofsky performance status ≥ 60;
  • imatinib treatment terminated at least 7 days before study day 1;
  • Adequate hepatic, renal, and cardiac function.

Exclusion criteria:

  • Prior malignancy (other than GIST, in situ cervical cancer, or basal cell cancer of the skin) unless treated with curative intent and without evidence of disease for ≥ 3 years; cardiac disease including myocardial infarction, unstable angina, and congestive heart failure (New York Heart Association class > II),
  • uncontrolled hypertension (systolic > 145 mmHg or diastolic > 85 mmHg),
  • History of arterial thrombosis or deep vein thrombosis (including pulmonary embolus) within 1 year of study day 1;
  • Absolute neutrophil count < 1.5x109/L, platelet count < 100x109/L, hemoglobin < 9.0 g/dL;
  • Prior treatment with motesanib diphosphate or other KIT (except imatinib) or VEGF inhibitors.
  • The study was approved by the institutional review board of each participating institution, and all patients provided written informed consent before any study-related procedures were performed.
  Contacts and Locations
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Please refer to this study by its identifier: NCT00089960

Sponsors and Collaborators
Study Director: MD Amgen
  More Information

Additional Information:
Responsible Party: Amgen Identifier: NCT00089960     History of Changes
Other Study ID Numbers: 20040110 
Study First Received: August 18, 2004
Last Updated: April 25, 2013
Health Authority: United States: Food and Drug Administration

Keywords provided by Amgen:

Additional relevant MeSH terms:
Gastrointestinal Neoplasms
Gastrointestinal Stromal Tumors
Digestive System Diseases
Digestive System Neoplasms
Gastrointestinal Diseases
Neoplasms by Histologic Type
Neoplasms by Site
Neoplasms, Connective Tissue
Neoplasms, Connective and Soft Tissue processed this record on May 25, 2016