NCT01152398

A Safety and Immunology Study of a Modified Vaccinia Vaccine for HER-2(+) Breast Cancer After Adjuvant Therapy

A Phase I Safety and Immunogenicity Trial of MVA-BN®-HER2 Vaccine in HER-2-Positive Breast Cancer Patients Following Adjuvant Therapy

• Status: Completed
• Phase: Phase 1
• Study type: Interventional
• Enrollment: 15 (actual)
• Sponsor: Bavarian Nordic · Industry
• Sex: Female
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The current trial, BNIT-BR-003, will evaluate the safety and biological activity of a fixed dose of MVA-BN®-HER2 following adjuvant chemotherapy in patients with HER-2-positive breast cancer. The intent of vaccination is to induce a combined antibody and T-cell anti-HER-2 immune response, which is intended to target HER-2-expressing tumor cells, and may induce tumor regression or slow progression of disease.

Detailed description

MVA-BN®-HER2 is a candidate breast cancer immunotherapy product comprised of a highly attenuated non-replicating vaccinia virus, MVA-BN®, engineered to encode a modified form of the HER-2 protein. MVA-BN® is a well-characterized, clonal strain of modified vaccinia virus Ankara (MVA) being developed as a smallpox vaccine, suitable for use in high-risk (e.g., immunocompromised) individuals. MVA-BN®-derived vectors encoding heterologous antigens are being developed for use as vaccines for infectious diseases such as HIV, and for the treatment of cancer. A large database exists from safety evaluations in animals and in humans for MVA-BN®, and MVA-BN®-derived vectors. HER-2 is overexpressed in 20-30% of human breast cancers. It is an oncogene/growth factor receptor critical for the malignant phenotype of HER-2- expressing tumors. It is an immunogenic target, and immune responses to this protein have been shown to mediate potent anti-tumor activity in multiple animal models. Means to stimulate anti-HER-2 reactivity are now being studied clinically. Sponsor, collaborators, and others have used both Protein and DNA vaccine forms of HER-2, and a safety database is developed and no significant adverse events have resulted from HER-2 directed vaccination. MVA-BN®-HER2 encodes a modified form of the HER-2 protein, hereinafter referred to as HER2. HER2 contains the extracellular domain of HER-2 but lacks the intracellular, cell signaling domain. In addition, HER2 includes two universal T-cell epitopes from tetanus toxin to facilitate the stimulation of an immune response to HER-2, a self-protein. The current trial, BNIT-BR-003, will evaluate the safety and biological activity of a fixed dose of MVA-BN®-HER2 following adjuvant chemotherapy in patients with breast cancers which overexpress HER-2. Patients will receive 6 subcutaneous vaccinations at 4-week intervals and will have blood drawn for immune function analysis.

Conditions

• Breast Cancer

Interventions

Type	Name	Description
BIOLOGICAL	MVA-BN-HER2	experimental vaccine, subcutaneous injection q4weeks x6

Timeline

• Start date: 2010-06-01
• Primary completion: 2012-09-01
• Completion: 2012-09-01
• First posted: 2010-06-29
• Last updated: 2019-03-14

Locations

1 site across 1 country: United States