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A phase 2 clinical trial of personalized peptide vaccination for castration-resistant prostate cancer (CRPC) patients with slight bone marrow suppression

A phase 2 clinical trial of personalized peptide vaccination for castration-resistant prostate cancer (CRPC) patients with slight bone marrow suppression - Personalized peptide vaccination for CRPC patients with slight bone marrow suppression

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000019802
Enrollment
35
Registered
2015-11-16
Start date
2015-11-17
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Castration-resistant prostate cancer

Interventions

1st treatment (total 8 times, every weeks): 4 peptide vaccines are selected from 31 peptide candidates restricted by HLA-class I, to which peptide-specific IgGs are detected before vaccination, and a

Sponsors

Cancer Vaccine Center, Kurume University School of medicine
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: The subjects must satisfy the following conditions. 1) Patients must be diagnosed as prostate cancer pathologically at the initial treatment. The patients must be suffering from castration-resistant prostate cancer after standard treatment. 2) Patients must be at a score level of 0-1 of performance status (PS) (ECOG). 3) Patients must be positive for HLA-A2, HLA-A24 or HLA-A3 super type. 4) Patients must have IgG reactive to at least two of peptide candidates. 5) Patients must satisfy the followings: WBC > and = 2,500/mm3 Lymphocyte 500- 1,000/mm3 Hb > and = 8.0g/dl Platelet > and = 50,000/mm3 Serum Creatinine < and = 2.5x upper limit of normal Total Bilirubin < and = 2x upper limit of normal 6) Patients must be more 20 year-old. 7) Patients must be expected to survive more than 3 months. 8) Written informed consent must be obtained from patients.

Exclusion criteria

Exclusion criteria: he following patients must be excluded: 1) Patients with severe symptoms (active and severe infectious disease, circulatory disease, respiratory disease, kidney disease, immunodeficiency, disturbance of coagulation). 2)Active double cancer (synchronous double cancer and metachronous double cancer within 5 disease-free years), excluding carcinoma in situ (lesions equal to intraepithelial or intramucosal cancer) judged to have been cured with local treatment. 3) Patients with the past history of severe allergic reactions. 4) Patients who are judged inappropriate for the clinical trial by doctors.

Design outcomes

Primary

MeasureTime frame
Assessment of immune responses by measurement of cytotoxic T lymphocytes (CTL)and anti-peptide IgG) before and after peptide vaccination.

Secondary

MeasureTime frame
1. Evaluation of long-term prognosis (progression free survival and overall survival). 2. Adverse effects of peptide vaccination / The safety of the protocol is evaluated based on the NCI-CTC. 3. Evaluation of mild bone marrow suppression, as well as immune responses enhancing effects of functional food nutrition.

Countries

Japan

Contacts

Public ContactAkira Yamada

Kurume University School of Medicine Research Center for Innovative Cancer Therapy, Cancer Vaccine Division

akiymd@med.kurume-u.ac.jp0942-31-7572

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026