A phase 1, single centre, open label, escalating dose study to assess the safety, tolerability and immunogenicity of a therapeutic human papillomavirus (HPV) DNA vaccine (AMV002) for HPV-associated head and neck cancer (HNC).


Journal

Cancer immunology, immunotherapy : CII
ISSN: 1432-0851
Titre abrégé: Cancer Immunol Immunother
Pays: Germany
ID NLM: 8605732

Informations de publication

Date de publication:
Mar 2021
Historique:
received: 27 04 2020
accepted: 03 09 2020
pubmed: 13 9 2020
medline: 9 3 2021
entrez: 12 9 2020
Statut: ppublish

Résumé

We conducted a phase 1 dose escalation study (ACTRN12618000140257 registered on 30/01/2018) to evaluate the safety, tolerability and immunogenicity of a therapeutic human papillomavirus (HPV) DNA vaccine (AMV002) in subjects previously treated for HPV-associated oropharyngeal squamous cell carcinoma (OPSCC). Eligible subjects had to have no evidence of recurrent and/or metastatic disease at least 12 weeks following the completion of treatment. Three dosing cohorts each consisted of four subjects: group 1: 0.25 mg/dose, group 2: 1 mg/dose, group 3: 4 mg/dose. AMV002 was delivered intradermally on days 0, 28 and 56. Incidence and severity of treatment-emergent adverse events (TEAE) including local reaction at the injection site, and vaccination compliance were recorded. T cell and antibody responses to HPV16 E6 and E7 were measured by interferon gamma (IFN-γ) enzyme-linked immunosorbent spot (ELISpot) assay and enzyme-linked immunosorbent assay (ELISA). All subjects completed the vaccination programme and experienced mild discomfort at the injection site(s). Pre-immunisation, cell-mediated responses to HPV16 E6 and E7 were evident in all subjects, and E7-specific antibodies were detected in 11 (91.7%), reflecting previous exposure to HPV. Post-vaccination, 10 of 12 (83.3%) subjects responded to one or more of the E6 and/or E7 peptide pools, while 2 (16.7%) did not show additional vaccine-induced cell-mediated responses. Vaccination resulted in a ≥ 4-fold increase in anti-HPV16 E7 antibody titre in one subject in group 3. AMV002 was well tolerated at all dose levels and resulted in enhanced specific immunity to virus-derived tumour-associated antigens in subjects previously treated for HPV-associated OPSCC.

Sections du résumé

BACKGROUND BACKGROUND
We conducted a phase 1 dose escalation study (ACTRN12618000140257 registered on 30/01/2018) to evaluate the safety, tolerability and immunogenicity of a therapeutic human papillomavirus (HPV) DNA vaccine (AMV002) in subjects previously treated for HPV-associated oropharyngeal squamous cell carcinoma (OPSCC).
METHODS METHODS
Eligible subjects had to have no evidence of recurrent and/or metastatic disease at least 12 weeks following the completion of treatment. Three dosing cohorts each consisted of four subjects: group 1: 0.25 mg/dose, group 2: 1 mg/dose, group 3: 4 mg/dose. AMV002 was delivered intradermally on days 0, 28 and 56. Incidence and severity of treatment-emergent adverse events (TEAE) including local reaction at the injection site, and vaccination compliance were recorded. T cell and antibody responses to HPV16 E6 and E7 were measured by interferon gamma (IFN-γ) enzyme-linked immunosorbent spot (ELISpot) assay and enzyme-linked immunosorbent assay (ELISA).
RESULTS RESULTS
All subjects completed the vaccination programme and experienced mild discomfort at the injection site(s). Pre-immunisation, cell-mediated responses to HPV16 E6 and E7 were evident in all subjects, and E7-specific antibodies were detected in 11 (91.7%), reflecting previous exposure to HPV. Post-vaccination, 10 of 12 (83.3%) subjects responded to one or more of the E6 and/or E7 peptide pools, while 2 (16.7%) did not show additional vaccine-induced cell-mediated responses. Vaccination resulted in a ≥ 4-fold increase in anti-HPV16 E7 antibody titre in one subject in group 3.
CONCLUSIONS CONCLUSIONS
AMV002 was well tolerated at all dose levels and resulted in enhanced specific immunity to virus-derived tumour-associated antigens in subjects previously treated for HPV-associated OPSCC.

Identifiants

pubmed: 32918586
doi: 10.1007/s00262-020-02720-7
pii: 10.1007/s00262-020-02720-7
doi:

Substances chimiques

Antibodies, Viral 0
Immunoglobulin G 0
Papillomavirus Vaccines 0
Vaccines, DNA 0

Types de publication

Clinical Trial, Phase I Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

743-753

Références

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Auteurs

J Chandra (J)

The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, QLD, Australia.

W P Woo (WP)

The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, QLD, Australia.
Jingang Medicine (Australia) Pty Ltd, Brisbane, QLD, Australia.

N Finlayson (N)

Jingang Medicine (Australia) Pty Ltd, Brisbane, QLD, Australia.

H Y Liu (HY)

The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, QLD, Australia.
Princess Alexandra Hospital, Brisbane, QLD, Australia.

M McGrath (M)

Princess Alexandra Hospital, Brisbane, QLD, Australia.

R Ladwa (R)

The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, QLD, Australia.
Princess Alexandra Hospital, Brisbane, QLD, Australia.

M Brauer (M)

Princess Alexandra Hospital, Brisbane, QLD, Australia.

Y Xu (Y)

The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, QLD, Australia.
Jingang Medicine (Australia) Pty Ltd, Brisbane, QLD, Australia.

S Hanson (S)

The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, QLD, Australia.

B Panizza (B)

The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, QLD, Australia.
Princess Alexandra Hospital, Brisbane, QLD, Australia.

I H Frazer (IH)

The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, QLD, Australia.
Jingang Medicine (Australia) Pty Ltd, Brisbane, QLD, Australia.

Sandro V Porceddu (SV)

The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, QLD, Australia. Sandro.Porceddu@health.qld.gov.au.
Princess Alexandra Hospital, Brisbane, QLD, Australia. Sandro.Porceddu@health.qld.gov.au.

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