Immunogenicity of a new purified fusion protein vaccine to respiratory syncytial virus: A multi-center trial in children with cystic fibrosis

  • Pedro A. Piedra
  • , Stanley G. Cron
  • , Alan Jewell
  • , Nicole Hamblett
  • , Ruth McBride
  • , Melisa A. Palacio
  • , Richard Ginsberg
  • , Christopher M. Oermann
  • , Peter W. Hiatt
  • , S. McColley
  • , M. Bowman
  • , D. Borowitz
  • , R. Castile
  • , K. McCoy
  • , C. Prestige
  • , M. E. Brown
  • , J. Stevens
  • , W. Regelmann
  • , C. Milla
  • , P. Sammut
  • J. Colombo, J. Eisenberg, T. D. Murphy, J. Finder, G. Kurland, G. Winnie, D. Orenstein, K. Voter, M. Light, M. S. Pian, C. Harris, D. Stokes, R. Fink, C. Ren, J. Gorvoy, L. Varlotta, M. Dyson

Research output: Contribution to journalArticlepeer-review

88 Scopus citations

Abstract

A third generation, purified fusion protein (PFP-3) vaccine was developed to prevent severe respiratory syncytial virus (RSV) disease in high-risk groups. A phase II, multi-center, adjuvant-controlled trial was performed in RSV seropositive children with cystic fibrosis (CF); 151 received the adjuvant-control and 143 received the vaccine. Details of the vaccine-induced immune response are presented. At enrollment, RSV-specific, serum antibodies were comparable between both groups. A highly sensitive and specific serum antibody vaccine profile was established for the PFP-3 vaccine. At post-vaccination and end-of-study, RSV-specific, neutralizing antibody (Nt Ab) and binding antibody (Bd Ab) to the fusion (F) protein were significantly higher in PFP-3 vaccinees. After 28 days post-vaccination, Nt Ab and Bd Ab to F protein titers declined slowly at rates of 0.23 and 0.37log2 per month, respectively. The PFP-3 vaccine-induced a robust immune response that lasted throughout the RSV season.

Original languageEnglish (US)
Pages (from-to)2448-2460
Number of pages13
JournalVaccine
Volume21
Issue number19-20
DOIs
StatePublished - Jun 2 2003

Bibliographical note

Funding Information:
Presented in part at Fourteenth Annual North American Cystic Fibrosis Conference, November 11, 2000, Baltimore, Maryland, Support: Collaborative Research Agreement between the Cystic Fibrosis Foundation and Wyeth-Lederle Vaccines; Cystic Fibrosis Foundation grant number: Piedra-99AO.

Keywords

  • Children with cystic fibrosis
  • RSV vaccine
  • Respiratory syncytial virus

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