Colon Cancer, Colorectal Cancer, Rectal Cancer
Conditions
Keywords
HLA-A*2402, Peptide Vaccine, RNF43, TOMM34, VEGFR1, VEGFR2
Brief summary
The purpose of this study is to evaluate the safety and time to progression of HLA-A\*2402 restricted epitope peptides RNF43, TOMM34, VEGFR1 and VEGFR2 emulsified with Montanide ISA 51 in combination with Tegafur/Uracil/Folinate chemotherapy.
Detailed description
RNF43 and TOMM34 have been identified as cancer specific molecules especially in colorectal cancer using genome-wide expression profile analysis by cDNA microarray technique. VEGF receptor 1 and 2 are essential targets to tumor angiogenesis, and we identified that peptides derived from these receptors significantly induce the effective tumor specific CTL response in vitro and vivo. According to these findings, in this trial, we evaluate the safety, immunological and clinical response of those peptides. Patients will be vaccinated twice a week for 8 weeks. On each vaccination day, RNF43 peptide (1mg), TOMM34 peptide (1mg), VEGFR1 peptide (1mg) and VEGFR2 peptide (1mg) mixed with Montanide ISA 51 will be administered by subcutaneous injection. The patients will also receive oral chemotherapy (Tegafur/Uracil/Folinate) simultaneously. Repeated cycles of the vaccine and the chemotherapy will be administered until patients develop progressive disease or unacceptable toxicity, whichever occurs first. In the phase I study, we evaluate the safety and tolerability of these peptide vaccine. In the following phase II study, we evaluate the immunological and clinical response of this vaccine therapy.
Interventions
BIOLOGICALRNF43, TOMM34, VEGFR1 and VEGFR2
Patients will be vaccinated twice a week for 8 weeks. On each vaccination day, RNF43 peptide (1mg), TOMM34 peptide (1mg), VEGFR1 peptide (1mg) and VEGFR2 peptide (1mg) mixed with Montanide ISA 51 will be administered by subcutaneous injection in combination with Tegafur/Uracil/Folinate chemotherapy.
Sponsors
Human Genome Center, Institute of Medical Science, University of Tokyo
Tokyo University
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
20 Years to 85 Years
Healthy volunteers
No
Inclusion criteria
* Advanced or recurrent colorectal cancer * Resistant against chemotherapy including CPT-11, l-OHP、+/- 5-FU +/- bevacizumab or difficult to continue the chemotherapy due to intolerable side effect(s) * ECOG performance status 0-2 * Life expectancy \> 3 months * HLA-A\*2402 * Laboratory values as follows * 2000/mm3\<WBC\<15000/mm3 * Platelet count\>100000/mm3 * Bilirubin \< 3.0mg/dl * Asparate transaminase \< 150IU/L * Alanine transaminase \< 150IU/L * Creatinine \< 3.0mg/dl * Able to receive oral Tegafur/Uracil/Folinate therapy * Able and willing to give valid written informed consent
Exclusion criteria
* Pregnancy(woman of childbearing potential:Refusal or inability to use effective means of contraception) * Breastfeeding * Active or uncontrolled infection * Unhealed external wound * Concurrent treatment with steroids or immunosuppressing agent * Prior chemotherapy,radiation therapy, or immunotherapy within 4 weeks * Uncontrolled brain and/or intraspinal lesion(s) * History of allergy to Tegafur, Uracil, and/or Folinate * Decision of unsuitableness by principal investigator or physician-in-charge
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| safety(Phase I:toxicities as assessed by NCI CTCAE version3) and efficacy(Phase II:Feasibility as evaluated by RECIST) | 2 months |
Secondary
| Measure | Time frame |
|---|---|
| To evaluate immunological responses | 2 months |
Countries
Japan
Outcome results
None listed