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Study Assessing Safety, Immunogenicity and LDLc -Lowering Activity of 2 PCSK9 Targeting AFFITOPE Vaccines in Healthy Subjects — AFF012  

Hypercholesterolemia Clinical Trial

Official title:
A Single-blind Phase 1 Study Assessing the Safety, Immunogenicity and Low Density Lipoprotein Cholesterol (LDLc)-Lowering Activity of 2 Different Proprotein Convertase Subtilisin/Kexin Type 9 (PCSK9) Targeting AFFITOPE® Vaccines in Healthy Subjects

Clinical Trial Summary

Study AFF012 is a single blind, single-center, randomized, placebo-controlled, parallel group, phase I clinical trial of repeated administration by subcutaneous injection of a single dose of one of two different proprotein convertase subtilisin/kexin type 9 targeting AFFITOPE® vaccines or Placebo. This study will assess Safety, Immunogenicity and low density lipoprotein cholesterol-lowering activity of the two vaccines.

72 healthy subjects are divided into three test groups (2 treatment groups, 1 placebo group), each consisting of 24 subjects. The subjects are randomized to receive either of two AFFITOPEs® (AT04A or AT06A, adsorbed to 1 mg aluminium oxyhydroxide) or placebo (1 mg aluminium oxyhydroxide).

The study consists of 3 parts, part A, encompassing Visit 1 to Visit 8, covering 3 priming immunizations at a dose of 15μg at days 0, 28 and 56 and the immediate observation period extending to day 140; the prolonged observation period: part B, encompassing Visit 9 and Visit 10 at days 273 and 365; and part C consisting of 7 visits (V11 to V17). Study participants having received 3 priming vaccinations and having completed part B will receive in part C one boost immunization at a dose of 75μg, which will be applied one year after the 3rd immunization (day 420). Probands will proceed directly from part A to part B and to part C. Continuation of parts B and C will be considered based on the part A results, primarily the immunological results. The following scenarios apply (provided that there is no safety issue). None of the two treatment groups exhibits a vaccine-specific antibody response over the placebo group at Visit 8 - this will lead to termination of the trial. One of the two groups fails to exhibit a vaccine-specific antibody response over the placebo group at Visit 8 - this will lead to its discontinuation; the other treatment group and the placebo group will be continued.

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02508896
Study type Interventional
Source Affiris AG
Contact
Status Completed
Phase Phase 1
Start date July 2015
Completion date August 31, 2017
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