University of Chicago Comprehensive Cancer Center
Chicago, Illinois, 60637-1470, United States
NCT Number: NCT00003970
Phase I trial to study genetic testing and the effectiveness of irinotecan in treating patients who have solid tumors and lymphoma. Drugs used in chemotherapy use different ways to stop cancer cells from dividing so they stop growing or die. Genetic testing for a specific enzyme may help doctors determine whether side effects from or response to chemotherapy are related to a person's genetic makeup
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Notify Me18 year and older
All sexes
Interventional
Phase 1
Chicago, Illinois, 60637-1470, United States
OBJECTIVES:
I. Classify patients with solid tumors or lymphoma according to UGT1A1 promoter (TATA box) and coding region (Gly71Arg) mutation, and CYP3A4 promoter (G to A) polymorphisms.
II. Identify UGT1A1 enzyme glucuronidator and irinotecan oxidizer phenotypes in these patients and determine the correlation between the two metabolic reactions in vivo.
III. Determine the relationship between UGT1A1 genotype (promoter and/or coding region mutation) and CYP3A4 promoter genotype vs gastrointestinal or bone marrow toxicity, and pharmacokinetics of irinotecan in these patients.
IV. Determine the pharmacokinetics of irinotecan in these patients.
OUTLINE: Patients are genotyped for UGT1A1 enzyme and classified as "Gilbert's" (7/7), "heterozygotes" (6/7), and "homozygotes for allele 6" (6/6). The DNA is analyzed for the UGT1A1 coding region mutation (Gly71Arg) and CYP3A4 promoter polymorphism. Patients are also examined for glucuronidator ratio of SN-38, the active metabolite of irinotecan, and classified as "low/slow" (very low or zero SN-38G/SN-38 ratio), "intermediate" (less than 50% normal ratio), or "normal".
Patients receive irinotecan IV over 90 minutes once every 3 weeks. Treatment continues for at least 2 courses in the absence of disease progression or unacceptable toxicity.
Healthy volunteers accepted: No
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Given IV
Other names: Campto, Camptosar, CPT-11, irinotecan, U-101440E
Time frame: Up to 4 years
A Cochran-Armitage test for trend will be used to determine whether there is a linear trend in the proportion of patients within each genotype experiencing grade 3-4 diarrhea. Similarly, trend analysis will be performed to determine if there is a linear trend in the proportion of patients within each phenotype experiencing grade 3-4 myelosuppression. Genotype (3 ordered levels) will be modeled as a function of metabolic ratios and biliary index to determine whether these are independent.
Time frame: Up to 4 years
A chi-squared test will be used to determine whether genotype and phenotype are independent.
Time frame: Up to 4 years
A chi-squared test will be used to determine whether genotype and phenotype are independent. Modeled as a function of metabolic ratios and biliary index.
National Cancer Institute (NCI)
Nih
A Phase I Clinical Trial to Investigate the Correlation Between UGT1A1 Genotype and Irinotecan (CPT-11) Pharmacokinetics and Toxicity in Cancer Patients
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