Linsitinib in Treating Patients With Gastrointestinal Stromal Tumors

Inclusion Criteria

• Patients must have histologically confirmed gastrointestinal stromal tumor (GIST) with confirmed genotype of wild-type in a Clinical Laboratory Improvement Amendments (CLIA) certified laboratory
• Patients will be stratified into pediatric and adult cohorts; patients in the pediatric cohort (age at diagnosis = 18 years AND no diagnosis of diagnosis of Carney Triad or Carney-Stratakis Diad) have had progression on or intolerance to imatinib therapy as documented by treating physician
• Performance status: Eastern Cooperative Oncology Group (ECOG) 0-2
• Patients must have measurable disease defined as lesions that can be measured in 2 dimensions by medical imaging techniques such as CT or magnetic resonance imaging (MRI); ascites, pleural fluid, and lesions seen on PET scan only are not considered measurable
• White blood cells count (WBC) >= 2.0 x 10^9/L (being >= 14 days off growth factors) OR
• Absolute neutrophil count (ANC) >= 1.5 x 10^9/L (being >= 14 days off growth factors)
• Platelet count >= 75 x 10^9/L
• Total bilirubin = 70 ml/min/1.73m^2 or
• Serum creatinine = 3 weeks except for prior tyrosine kinase inhibitor therapy which can be >= 7 days; patients must be recovered from the effects of any prior surgery, radiotherapy or systemic therapy
• Patients who are receiving any other investigational agents or other anti-cancer therapies other than those administered in this study during protocol treatment
• Patients with diabetes mellitus requiring insulin for control of their diabetes
• Patients with a history of liver cirrhosis
• Patients with known brain metastases should be excluded from this clinical trial
• History of allergic reactions attributed to compounds of similar chemical or biologic composition to linsitinib (OSI-906)
• While cytochrome P450 1A2 (CYP1A2) inhibitors/inducers are not specifically excluded, investigators should be aware that linsitinib (OSI 906) exposure may be altered by the concomitant administration of these drugs
• While cytochrome P450 2C9 (CYP2C9) substrates are not specifically excluded, investigators should be aware that levels of drugs metabolized by CYP2C9 may be increased by the concomitant administration of linsitinib (OSI-906); caution should be used when administering CYP2C9 substrates to patients who are on study drug
• Use of the potent CYP1A2 inhibitors ciprofloxacin and fluvoxamine are prohibited; other less potent CYP1A2 inhibitors/inducers are not excluded
• Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements
• Prior treatment with another kinase inhibitor targeting insulin-like growth factor 1 receptor (IGF-1R) pathway, including monoclonal antibodies targeting IGF-1R
• Pregnant women are excluded from this study; breastfeeding should be discontinued if the mother is treated with linsitinib (OSI-906)
• Fertile men and women of childbearing potential not employing an effective method of birth control throughout the trial and for 3 months after last study drug administration in both sexes; women of childbearing potential must have a negative pregnancy test (serum or urine) within the 7 days prior to study drug administration
• NOTE: Women of childbearing potential include both pre-menopausal women and women within the first 2 years of the onset of menopause
• NOTE: Effective methods of birth control includes: surgically sterile, barrier device (condom, diaphragm), contraceptive coil, abstinence; oral contraceptive pills (OCPs) alone are not considered an effective method
• Known human immunodeficiency virus (HIV)-positive patients on combination antiretroviral therapy are ineligible
• Use of drugs that have a known risk of causing Torsades de Pointes (TdP) are prohibited within 14 days prior to initiation of linsitinib (OSI-906)
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