Histocompatibility Leukocyte Antigen (HLA)-A*2402 Restricted Peptide Vaccine Therapy in Patients With Colorectal Cancer

Tokyo University

Status and phase: Terminated; Phase 2; Phase 1

Conditions: Colon Cancer; Rectal Cancer; Colorectal Cancer

Treatments: Biological: RNF43, TOMM34, VEGFR1 and VEGFR2

Study type: Interventional

Funder types: Other

Identifiers

NCT00677287

CRC-A24-I, II

Details and patient eligibility

About

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.

Full 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.

Enrollment: 14 estimated patients

Sex: All

Ages: 20 to 85 years old

Volunteers: No Healthy Volunteers

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

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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14 participants in 1 patient group

A

Experimental group

Treatment:

Biological: RNF43, TOMM34, VEGFR1 and VEGFR2