A Safety and Immunogenicity Phase IB Study of CryJ2-DNA-Lysosomal Associated Membrane Protein (CryJ2 -DNA-LAMP) Plasmid Assessing the Long Term Safety of Previously Treated Subjects

This is a continuing research study of a vaccine for allergy to Japanese Red Cedar. The vaccine is called CryJ2-DNA-LAMP Plasmid vaccine. This research study will determine how the vaccine is tolerated and how previous Phase IA research participants respond to the vaccine in a booster dose. CryJ2-DNA-LAMP Plasmid vaccine is investigational, which means it is not approved for use by the United States Food and Drug Administration (FDA) but is available in research studies like this one. The study is a Phase IB, prospective, three cohort, open label study conducted on one cohorts of non-atopic subjects and two cohorts of subjects with a history of allergic rhinitis symptoms to Japanese red cedar CryJ 2 pollen allergen that participated in the previous Phase IA study (all the subjects participated in the previous study). The study will be conducted at 1 study center. Subjects are enrolled in the trial for a period of 80 days. The objectives of the statistical analyses are to establish the safety and to explore the immunogenicity of the LAMP-vax vaccine. All statistical analyses conducted on the data from this trial will be exploratory in nature. The primary objective of this Phase IB Study is to evaluate the safety and immunological responses of an additional dose of CryJ2-DNA-LAMP plasmid vaccine delivered intramuscularly (IM) to subjects who previously received 4 doses of CryJ2-DNA-LAMP vaccine delivered IM every 2 weeks in the previous Phase IA study.