Five Year Adjuvant Imatinib Mesylate (Gleevec®) in Gastrointestinal Stromal Tumor (GIST)



Status:Completed
Conditions:Cancer
Therapuetic Areas:Oncology
Healthy:No
Age Range:18 - Any
Updated:4/17/2018
Start Date:July 22, 2009
End Date:December 20, 2016

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A Phase II, Non-Randomized, Open-Label Multicenter Study of 5 Year Adjuvant Imatinib Mesylate (Gleevec®) in Patients at Significant Risk for Recurrence Following Complete Resection of Primary Gastrointestinal Stromal Tumor (GIST)

This is a Phase II, non-randomized, open-label, multi-center study conducted in the USA. The
purpose of this trial is to evaluate the use of long term adjuvant imatinib mesylate in
patients at significant risk for recurrence following complete resection of primary GIST.

This is a Phase II, non-randomized, open-label, multi-center study conducted in the USA. The
primary endpoint is to evaluate the use of long term adjuvant imatinib mesylate in patients
at significant risk for recurrence following complete resection of primary GIST. A total of
85 adult patients, 18 years of age and older will be enrolled.Participants will take 400 mg
of imatinib mesylate daily by mouth for a total of 5 years. At the conclusion of the
treatment period, patients will be followed for 2 years for survival, status of response and
antineoplastic treatments and quality of life.

Inclusion Criteria:

1. Patients 18 years of age or older.

2. Patient must have had a histological diagnosis of primary GIST.

3. The tumor must expressed KIT (CD117) protein by immunohistochemistry performed by
central pathology.

4. Patient must have been at significant risk of tumor recurrence as defined by either:

- Primary GIST (any site): ≥ 2 cm and a mitotic rate of ≥ 5/50 HPF's

- Non-gastric primary GIST: ≥ 5cm

5. Patient must have undergone complete gross resection of a primary GIST within 12 weeks
prior to first dose of imatinib study drug. The inclusion of R1 resections will be
reviewed on a case by case basis by the Study Management Committee.

6. Patient must had no evidence of metastatic GIST on either 1) a post-operative CT of
the abdomen and pelvis with intravenous and oral contrast or 2) MRI of the abdomen and
pelvis with intravenous contrast. CT or MRI must have been performed within 8 weeks
prior to first dose of imatinib study drug.

7. Performance status 0 or 1 (ECOG)

8. Patient must had the following post-operative laboratory values confirmed within 14
days prior to first dose of imatinib study drug:

- total bilirubin < 1.5 x ULN NOTE: Patients with elevated bilirubin secondary to
Gilbert's disease are eligible to participate in the study.

- ALT and AST < 2.5 x ULN

- creatinine < 1.5 x ULN

- ANC > 1.5 x 109/L

- platelets > 100 x 109/L

9. If patient is a cancer survivor, ALL of the following criteria apply:

- Patient had undergone potentially curative therapy for all prior malignancies.

- No evidence of any prior malignancies for at least 3 years with no evidence of
recurrence (except for effectively treated basal cell or squamous carcinoma of
the skin, carcinoma in-situ of the cervix that has been effectively treated by
surgery alone, or lobular carcinoma in-situ of the ipsilateral or contralateral
breast treated by surgery alone).

- Patient is deemed by their treating physician to be at low risk for recurrence
from prior malignancies.

10. Female patients of childbearing potential must have had negative pregnancy test within
7 days before initiation of study drug dosing. Postmenopausal women must have been
amenorrheic for at least 12 months to be considered of non-childbearing potential.
Female patients of reproductive potential must have jagreed to employ an effective
barrier method of birth control throughout the study and for up to 7 days following
discontinuation of study drug.

11. Written, voluntary informed consent.

Exclusion Criteria:

1. Patient has metastatic GIST to the peritoneum, liver, lymph node, or other sites or
recurrent GIST.

2. Prior treatment for GIST with the exception of prior treatment with imatinib adjuvant
lasting ≤ 8 weeks following gross surgical resection.

3. Patient has received any other investigational agents within 28 days of first day of
study drug dosing.

4. Patient with Grade III/IV cardiac problems as defined by the New York Heart
Association Criteria. (i.e., congestive heart failure, myocardial infarction within 6
months of study)

5. Patients with severe and/or uncontrolled concurrent medical disease that in the
opinion of the investigator could cause unacceptable safety risk or compromise
compliance with the protocol (i.e., uncontrolled diabetes, chronic renal disease,
chronic liver disease, or active uncontrolled infection).

6. Patient has a known diagnosis of human immunodeficiency virus (HIV) infection.

7. Patient receiving concurrent treatment with warfarin (acceptable alternative:
low-molecular weight heparin).

8. Patient with any significant history of non-compliance to medical regimens or with
inability to grant reliable informed consent.
We found this trial at
21
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Aurora, Colorado 80045
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Boston, Massachusetts 02215
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Coeur d'Alene, ID
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Durham, NC
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Evanston, Illinois 60201
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Gainesville, Georgia 30501
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Hershey, PA
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Kingsport, Tennessee 37660
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La Jolla, CA
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1 Medical Center Dr
Lebanon, New Hampshire 03756
 (603) 650-5000
Dartmouth Hitchcock Medical Center Dartmouth-Hitchcock is a national leader in patient-centered health care and building...
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Lebanon, NH
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New York, NY
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Norfolk, VA
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Portland, OR
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Providence, Rhode Island 02908
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Providence, RI
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4921 Parkview Place
Saint Louis, Missouri 63110
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Saint Louis, MO
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San Antonio, TX
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Washington, District of Columbia 20010
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Washington,
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