Colorectal Neoplasms, Secondary
Conditions
Keywords
Colorectal neoplasms, Secondary, irinotecan, Pharmacokinetics, Pharmacodynamics, SLCO1B1, PXR
Brief summary
From 100 colorectal cancer patients being treated with FOLFIRI regimen or any kind of irinotecan containing regimen, blood samples for irinotecan and its metabolites levels and genotypes related with its metabolism will be collected. The association of their levels and genotypes and treatment effects will be evaluated.
Detailed description
For the genotype-PD association, 50 colorectal cancer patients treated with FOLFIRI will be enrolled and studied. 50 additional colorectal patients treated with any kind of irinotecan containing regimen will be enrolled and including the 50 patients for the genotype-PD association, a total of 100 patients will be evaluated for the genotype-PK association. Blood samples for PK analysis will be collected from patients with colorectal cancer during 1st treatment cycle of irinotecan and 2nd, 3rd infusion. During the 1st treatment cycle, blood will be drawn 0 h (before irinotecan infusion), 0.75 h, 1.5 h and each at time ranges of 2\ 8 h, 8\ 16 h, 24\ 32h and 48\ 52 hours after the start of irinotecan infusion over 90 min and additional blood will be collected 48\ 52 hours after the respective 2nd and 3rd infusion. For 50 colorectal cancer patient treated with FOLFIRI regimen, responses to the treatment will be assessed every 3 cycles. All assessments will be repeated at the end of trial therapy. The RECIST criteria for measurable disease will be followed and toxicity will be evaluated according to NCI common toxicity criteria version 3.0. Time to disease progression will be calculated from the date of study entry to the first objective documentation of progressive disease. Response duration will be measured from the date a patient first fulfills the CR or PR criteria to the first date of objective documentation of disease progression.
Interventions
DRUGirinotecan
Sponsors
National Cancer Center, Korea
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Histologically or cytologically diagnosed unresectable or metastatic colorectal cancer * Performance status of 0, 1 and 2 on the ECOG criteria * Disease status must be that of measurable disease as defined by RECIST criteria (For genotype-PD study only) Only non-target lesions are allowed for PK study * No previous chemotherapy, radiotherapy on the target lesion, immunotherapy; adjuvant chemotherapy with fluoropyrimidines completed at least 6 months ago is allowed (For genotype-PD study only) Previously treated patients are allowed for PK study * Life expectancy of more than 3 months (For genotype-PD study only) * Adequate major organ functions * Compliant patient who can be followed-up adequately * Informed consent
Exclusion criteria
* Active or uncontrolled infection * Pregnant or breast-feeding women * Patients with systemic disease, especially cardiovascular disease, who cannot tolerate systemic chemotherapy * Patients with brain metastasis (For genotype-PD study only) * Patients treated with radiotherapy within 2 weeks (For genotype-PD study only)
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| SLCO1B1 and PXR genotypes and maximal response rate | Before & during treatment |
| SLCO1B1 and PXR genotypes and pharmacokinetics of SN-38 | Before and 1st cycle |
Secondary
| Measure | Time frame |
|---|---|
| SLCO1B1 and PXR genotypes and response duration, time to progression and overall survival | — |
Countries
South Korea
Contacts
Primary ContactKyung Hae Jung, M.D.
Backup ContactEun Kyung Shim
Outcome results
None listed