Neoadjuvant and Adjuvant Imatinib Mesylate in Treating Patients With Primary or Recurrent Malignant Gastrointestinal Stromal Tumor

• Status: Completed
• Trial end date: 2009-01-28
• Target enrollment: 0
• Participant gender: All

Summary

Phase II trial to study the effectiveness of neoadjuvant and adjuvant imatinib mesylate in treating patients who are undergoing surgery for primary or recurrent malignant gastrointestinal stromal tumor. Imatinib mesylate may stop the growth of tumor cells by blocking the enzymes necessary for their growth. Giving imatinib mesylate before and after surgery may shrink the tumor so it can be removed and may kill any tumor cells remaining after surgery.

• Phase: Phase 2
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: National Cancer Institute (NCI)
• Collaborators: American College of Radiology Imaging Network; Eastern Cooperative Oncology Group; Radiation Therapy Oncology Group
• Treatments: Imatinib Mesylate

Criteria

Inclusion Criteria:

• Histologically confirmed malignant gastrointestinal stromal tumor

• Potentially resectable primary disease

• Potentially resectable recurrent disease

• Local or intra-abdominal/pelvic metastatic disease

• Documented c-kit (CD117) expression by immunohistochemical analysis of either initial core specimen or, if recurrent disease, from original tumor block

• Primary disease must be visceral, intra-abdominal, or pelvic in origin

• At least 1 unidimensionally measurable lesion

• At least 5 cm for primary disease

• At least 2 cm for recurrent disease

• At least 1 viable core biopsy tumor specimen obtained within 8 weeks before registration

• Performance status - Zubrod 0-2

• WBC at least 3,000/mm^3

• Absolute neutrophil count at least 1,500/mm^3

• Platelet count at least 100,000/mm^3

• Bilirubin no greater than 1.5 times upper limit of normal (ULN)

• ALT/AST no greater than 2.5 times ULN

• No uncontrolled chronic liver disease

• Creatinine no greater than 1.5 times ULN

• No uncontrolled chronic renal disease

• No New York Heart Association class III or IV cardiac disease

• Must be able to lie still in the PET scanner for approximately 1-2 hours

• No uncontrollable hyperglycemia

• No medical or psychological condition that would preclude study participation

• No severe or uncontrolled medical disease

• No active uncontrolled infection

• No known or suspected hypersensitivity to any component of the study drug

• Any prior malignancy is allowed provided patient remains disease free from that malignancy

• Not pregnant or nursing

• Negative pregnancy test

• Fertile patients must use effective barrier contraception during and for 3 months after study participation

• At least 28 days since prior biologic therapy

• No concurrent filgrastim (G-CSF) or sargramostim (GM-CSF)

• At least 28 days since prior chemotherapy

• At least 28 days since prior radiotherapy

• See Disease Characteristics

• At least 28 days since prior investigational drugs

• At least 28 days since prior imatinib mesylate

• No concurrent therapeutic doses of warfarin

• Concurrent low-molecular weight heparin or mini-dose warfarin (1 mg per day) prophylaxis is allowed