A Safety and Immunogenicity Phase IC Study of CryJ2 -DNA-LAMP Plasmid Vaccine for Assessment of Intradermal (ID) Route of Administration Using the Biojector 2000 Device

A safety and Immunological assessment of JRC sensitive (atopic) subjects will be assessed in
terms of current skin test reactivity. Subjects that are eligible to participate in this
study will be assigned by whether they are sensitive or non sensitive to CryJ2 or Mountain
Cedar to one of 3 study vaccine cohorts:

Cohort 1: These Japanese Red Cedar atopic and non-atopic subjects will be recruited as a
placebo control. This cohort will be composed of 5 atopic and 5 non-atopic subjects (half of
the subjects will be atopic and half non-atopic), that will receive 4 vaccinations, 14 days
apart, of a saline control in four separate 0.200 ml volumes administered Intradermally (ID)
using the needle-free Biojector device.

Cohort 2: These Japanese Red Cedar atopic subjects will receive intradermal (ID) injections
of the same CryJ2-DNA-LAMP vaccine previously used in Phase IA and IB studies. Cohort #2
will receive four (4) 2.16 mg doses at 14 day intervals. Each 2.16 mg dose will require
administration of four (4) separate 0.200 ml volumes of a 2.7 mg/ml vaccine concentrate
using the needle-free Biojector device. Each of the four volumes will be injected at
different sites on the same or different deltoid muscle.

Cohort 3: These Japanese Red Cedar atopic subjects will receive intradermal (ID) injections
of the same CryJ2-DNA-LAMP vaccine previously used in Phase IA and IB studies. Cohort #3
will receive four (4) 1.08 mg doses at 14 day intervals. Each 1.08 mg dose will require
administration of two (2) separate 0.200 ml volumes of a 2.7 mg/ml vaccine concentrate using
the needle-free Biojector device. Each of the four volumes will be injected at different
sites on the same or different deltoid muscle.

There will be between 18 to 26 men and women participating in the study at one location.
Your participation in this study will last approximately 132 days.

Inclusion Criteria:

1. Male and female subjects between the ages of 18 and 63 years, who are either:

1. Japanese Red Cedar pollen or Mountain Cedar positive in skin tests, or

2. Presence of anti-CryJ2 antibodies. Subjects will be assigned to Cohorts 1, 2 and
3. Half of cohort 1 will be composed of Japanese Red Cedar pollen or Mountain
Cedar positive atopic subjects, the other half composed of non-atopic
subjects.

2. Execute a written informed consent (in English and where appropriate; in Japanese if
subject prefers) to participate in the study.

3. For subjects to be enrolled in Cohorts 2, 3 and half of cohort 1, documented allergy
to Japanese Red Cedar pollen as demonstrated by a positive epicutaneous skin test for
Japanese Red Cedar pollen or Mountain Cedar antigen (wheal >3 mm greater than the
negative control). Although the subjects may have positive skin tests to other
allergens, these will not be used to qualify or to participate in the study.

4. Female subjects of childbearing potential, defined as not surgically sterile or at
least 2 years postmenopausal, must agree to use one of the following forms of
contraception for the duration of the study: hormonal (oral, implant, or injection)
begun >30 days prior to screening, barrier (condom, diaphragm with spermicide),
intrauterine device (IUD), or vasectomized partner (6 months minimum).

5. Subjects will be healthy without any clinically significant abnormal findings on the
physical examination, with the exception of HEENT (head, eyes, ears, nose and throat)
findings consistent with allergic rhinitis, medical history, or clinical laboratory
results during screening which, in the opinion of the Investigator, would not
jeopardize the safety of the subject or impact the validity of the study results.

6. Subject must be willing and able to comply with study requirements, including their
availability for the study period.

Exclusion Criteria:

1. Previous Japanese red cedar allergen immunotherapy [(Subcutaneous Immunotherapy
(SCIT), oral immunotherapy, SLIT (Sublingual Immunotherapy), or recombinant peptide].

2. History of anaphylaxis requiring medical intervention.

3. Intolerance of or severe allergic reaction to previous immunotherapy (SCIT, oral
immunotherapy, SLIT, or recombinant peptide).

4. History of asthma requiring daily medication with the exception of exercise induced
asthma. (History of intermittent and/or mild asthma is permitted).

5. Subjects receiving anti-IgE monoclonal antibodies.

6. Congenital immune deficiency or acquired immune suppression. Causes of acquired
immune suppression may include, but are not limited to, systemic illnesses such as
malignancy and infection, the use of medications such as corticosteroids and
chemotherapeutic agents, and radiation therapy.

7. History of organ transplant, hematologic malignancy, autoimmune disease, myocardial
infarction, or congestive heart failure.

8. History of clinically significant gastrointestinal, renal, hepatic, neurologic,
hematologic diseases which, in the opinion of the Principal Investigator, would
jeopardize the safety of the subject or impact the validity of the study results.

9. Inability or unwillingness to stop using drugs that may inhibit the ability to treat
a severe allergic adverse event. This includes, but is not limited to; beta blockers
such as atenolol (Tenormin), metoprolol (Lopressor, Toprol-XL) and propranolol
(Inderal, Inderal LA) for 48 hours prior to each visit. All subjects must be off of
antihistamine therapy 7 days before skin testing.

10. Female subjects who are trying to conceive, are pregnant, or are lactating.

11. Positive serum pregnancy test at screening or a positive human chorionic gonadotropin
(HCG) urine test on Visit 1 for women of childbearing potential.

12. Positive blood screen for human immunodeficiency virus (HIV), Hepatitis B surface
antigen (HbSAg), or Hepatitis C.

13. Forced Expiratory Volume 1 (FEV1) of <70% as measured by spirometry.

14. Chronic history of recurrent sinusitis, urticaria or angioedema within the last 12
months.

15. History of alcohol or drug abuse within the year prior to the Screening Visit 1, or
current evidence of substance dependence or abuse.

16. Laboratory Values (hematology, biochemistry, urine tests), that are outside the
normal ranges, unless the abnormality is not considered clinically significant by the
Principal Investigator.

17. Participation in a clinical trial or receipt of a non-FDA approved therapy within 30
days prior to the Screening Visit.

18. Subjects with anti-LAMP antibodies above the Cutpoint Assay baseline will be
excluded.

19. Subjects who have suffered from general fatigue without etiology during the previous
six (6) months will be excluded from the study. Fatigue is characterized by a
lessened capacity or motivation for work and reduced efficiency of accomplishment,
usually accompanied by a feeling of weariness, sleeplessness, and muscle tiredness.