Immunotherapy of Recurrent Cervical Cancers Using Dendritic Cells (DCs)

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National Taiwan University

Status and phase

Unknown
Phase 1

Conditions

Cervical Cancer

Treatments

Biological: HPV16 E7 peptide-pulsed autologous DCs

Study type

Interventional

Funder types

Other

Identifiers

NCT00155766
9100205963

Details and patient eligibility

About

Chemotherapy is the current standard treatment for unresectable recurrent cervical carcinoma after radiotherapy or distant metastasis of cervical carcinoma. The most effective regimens are cisplatin-based chemotherapy. After failure of the cisplatin-based chemotherapy, there is still no treatment that has been proved to be effective. Human papilloma viruses (HPV) have been consistently implicated in causing cervical cancer especially those high-risk types (HPV 16,18,31,45) have been strongly associated with cervical cancer. HPV 16 was found in more than 50% of cervical cancer tissues. Results from many animal tumor models have indicated that immunization with tumor antigen-pulsed dendritic cells can trigger a long-lasting anti-tumor immune response and significantly inhibit the growth of implanted tumor cells. Recently, many clinical trials have been conducted to evaluate the feasibility and safety of immunizing cancer patients with tumor antigen-pulsed dendritic cells. No severe toxicity has been reported and some patients were shown to respond to the treatment. Based on previous animal and clinical studies by other investigators, we propose to evaluate the potential of immunizing cancer patients with antigen-pulsed autologous dendritic cells as a cancer vaccine to treat for recurrent cervical cancers after failure of cisplatin-based chemotherapy treatment or refusing chemotherapy. In this study, we will generate dendritic cells by culturing patient's autologous PBMC with GM-CSF and IL-4 in vitro. These dendritic cells will be pulsed with synthetic peptides representing the CTL epitopes on HPV Type 16 E7. Antigen-pulsed dendritic cells will be injected into inguinal lymph nodes under the guidance of real-time sonography. Each patient will receive four injections and 12 patients in total will be recruited for this study.

Full description

Chemotherapy is the current standard treatment for unresectable recurrent cervical carcinoma after radiotherapy or distant metastasis of cervical carcinoma. The most effective regimens are cisplatin-based chemotherapy. After failure of the cisplatin-based chemotherapy, there is still no treatment that has been proved to be effective. Human papilloma viruses (HPV) have been consistently implicated in causing cervical cancer especially those high-risk types (HPV 16,18,31,45) have been strongly associated with cervical cancer. HPV 16 was found in more than 50% of cervical cancer tissues. Results from many animal tumor models have indicated that immunization with tumor antigen-pulsed dendritic cells can trigger a long-lasting anti-tumor immune response and significantly inhibit the growth of implanted tumor cells. Recently, many clinical trials have been conducted to evaluate the feasibility and safety of immunizing cancer patients with tumor antigen-pulsed dendritic cells. No severe toxicity has been reported and some patients were shown to respond to the treatment. Based on previous animal and clinical studies by other investigators, we propose to evaluate the potential of immunizing cancer patients with antigen-pulsed autologous dendritic cells as a cancer vaccine to treat for recurrent cervical cancers after failure of cisplatin-based chemotherapy treatment or refusing chemotherapy. In this study, we will generate dendritic cells by culturing patient's autologous PBMC with GM-CSF and IL-4 in vitro. These dendritic cells will be pulsed with synthetic peptides representing the CTL epitopes on HPV Type 16 E7. Antigen-pulsed dendritic cells will be injected into inguinal lymph nodes under the guidance of real-time sonography. Each patient will receive four injections and 12 patients in total will be recruited for this study.

Sex

Female

Ages

18 to 75 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

1. recurrent cervical cancer 2. HPV 16 infection 3. Previously received cisplatin ot 5-FU based chemotherapy or refused to receive chemotherapy 4. HLA-A2 haplotype 5. Older than 20 years old 6. ECOG I or II 7. Life expectancy longer than 3 months 8. Adequate bone marrow reserve 9. pregnancy test: negative 10. Informed consent obtained

Exclusion criteria

1. CNS metastasis 2. Acute or chronic infection 3. Pregnant or lactating women 4. Asthma 5. Cardiac diseases such as heart failure, unstable angina, arrhythmia, myocardial infarction 6. Autoimmune disease 7. Previously other cancers (except basal cell cancer) 8. Without chemotherapy, biotherapy for more than 6 weeks

Trial design

Primary purpose

Treatment

Allocation

Non-Randomized

Interventional model

Single Group Assignment

Masking

None (Open label)

Trial contacts and locations

1

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Central trial contact

Chi-An Chen, MD

Data sourced from clinicaltrials.gov

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