About the Authors

Alessandra Vitelli

Affiliation Okairòs, Rome, Italy

Mary R. Quirion

Affiliation Gene Therapy and Immunogenicity Branch, Division of Cellular and Gene Therapies, Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, Maryland, United States of America

Chia-Yun Lo

Affiliation Gene Therapy and Immunogenicity Branch, Division of Cellular and Gene Therapies, Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, Maryland, United States of America

Julia A. Misplon

Affiliation Gene Therapy and Immunogenicity Branch, Division of Cellular and Gene Therapies, Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, Maryland, United States of America

Agnieszka K. Grabowska

Current address: German Cancer Research Center, Immunotherapy and Prevention, Heidelberg, Germany

Affiliation Okairòs, Rome, Italy

Angiolo Pierantoni

Affiliation Okairòs, Rome, Italy

Virginia Ammendola

Affiliation Okairòs, Rome, Italy

Graeme E. Price

Affiliation Gene Therapy and Immunogenicity Branch, Division of Cellular and Gene Therapies, Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, Maryland, United States of America

Mark R. Soboleski

Current address: Center for Devices and Radiological Health, Food and Drug Administration, White Oak, Maryland, United States of America

Affiliation Gene Therapy and Immunogenicity Branch, Division of Cellular and Gene Therapies, Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, Maryland, United States of America

Riccardo Cortese

Affiliation Okairòs, Rome, Italy

Stefano Colloca

Affiliation Okairòs, Rome, Italy

Alfredo Nicosia

Affiliations Okairòs, Rome, Italy, Centro di Ingegneria Genetica e Biotecnologia Avanzate (CEINGE), Naples, Italy, Department of Biochemistry and Medical Biotechnology, University of Naples Federico II, Naples, Italy

Suzanne L. Epstein

suzanne.epstein@fda.hhs.gov

Affiliation Gene Therapy and Immunogenicity Branch, Division of Cellular and Gene Therapies, Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, Maryland, United States of America

Competing Interests

The authors have the following interests: Authors from Okairòs are employees of and/or shareholders in Okairòs, which is developing vectored vaccines for malaria and other diseases. Okairòs is developing adenovirus based vaccines for influenza. This research was carried out under a collaborative agreement between CBER, FDA and Okairòs. There are no other patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: AN SLE AV MRQ C-YL JAM GEP. Performed the experiments: AV MRQ C-YL JAM GEP MRS AP AKG. Analyzed the data: AV MRQ C-YL JAM GEP MRS SLE AN. Contributed reagents/materials/analysis tools: AKG AP VA SC RC. Wrote the paper: SLE GEP AV MRQ C-YL JAM RC.