Safety and immunogenicity of three different formulations of an adjuvanted varicella-zoster virus subunit candidate vaccine in older adults: a phase II, randomized, controlled study

. 2014 Mar 26 ; 32 (15) : 1745-53. [epub] 20140206

Jazyk angličtina Země Nizozemsko Médium print-electronic

Typ dokumentu klinické zkoušky, fáze II, srovnávací studie, časopisecké články, multicentrická studie, randomizované kontrolované studie, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/pmid24508036
Odkazy

PubMed 24508036
DOI 10.1016/j.vaccine.2014.01.019
PII: S0264-410X(14)00051-6
Knihovny.cz E-zdroje

BACKGROUND: This study investigated the safety and immunogenicity of different formulations and schedules of a candidate subunit herpes zoster vaccine containing varicella-zoster virus glycoprotein E (gE) with or without the adjuvant system AS01B. METHODS: In this phase II, single-blind, randomized, controlled study, adults aged ≥60years (N=714) received one dose of 100μggE/AS01B, two doses, two months apart, of 25, 50, or 100μggE/AS01B, or two doses of unadjuvanted 100μggE/saline. Frequencies of CD4(+) T cells expressing ≥2 activation markers following induction with gE were measured by intracellular cytokine staining and serum anti-gE antibody concentrations by ELISA. RESULTS: Frequencies of gE-specific CD4(+) T cells were >3-fold higher after two doses of all gE/AS01B formulations than after one dose of 100μggE/AS01B or two doses of 100μggE/saline. Frequencies were comparable after two doses of 25, 50, or 100μggE/AS01B. Serum anti-gE antibody concentrations were comparable after two doses of 50 or 100μggE/AS01B and higher than in the other groups. Immune responses persisted for at least 36 months. Reactogenicities of all gE/AS01B formulations were similar but greater than with gE/saline. CONCLUSIONS: The three formulations of gE/AS01B were immunogenic and well tolerated in adults aged ≥60years. Two vaccinations with gE/AS01B induced higher immune responses than one and the dose of gE impacted humoral but not cellular immune responses (NCT00434577).

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ClinicalTrials.gov
NCT00434577

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