UGT1A1 Polymorphism in Patients With Colorectal Cancer Treated With CPT-11 (Irinotecan)
- Determine the frequency of genetic polymorphisms of UGT1 in Hispanics with colorectal
- Determine if pharmacokinetics of irinotecan and its metabolites, SN38 and SN38G, are
associated with the genotype of UGT1 and clinical toxicity.
- Determine whether the genetic polymorphisms of UGT1 are associated with clinical
toxicity and pharmacokinetics/pharmacodynamics of irinotecan in patients with
unresectable colorectal cancer treated with irinotecan.
- Determine the response, time to progression, and survival in patients with UGT1A1
polymorphisms treated with irinotecan.
OUTLINE: Genomic DNA is isolated from blood samples from patients and analyzed for UGT1
polymorphisms. Patients are stratified according to UGT1 genotype (homozygous for wild type
vs heterozygous for abnormal allele vs homozygous for abnormal allele).
Patients receive irinotecan over 90 minutes weekly for 4 weeks. Treatment repeats every 6
weeks in the absence of disease progression or unacceptable toxicity.
PROJECTED ACCRUAL: Approximately 28 patients will be accrued for this study.
Heinz-Josef Lenz, MD
USC/Norris Comprehensive Cancer Center
United States: Federal Government
|USC/Norris Comprehensive Cancer Center and Hospital
|Los Angeles, California 90033-0804
|University of California Davis Cancer Center
|Sacramento, California 95817
|City of Hope Comprehensive Cancer Center
|Duarte, California 91010