A Randomized, Double-Blind, Placebo-Controlled Pilot Study of Sublingual/Oral Immunotherapy for the Treatment of Peanut Allergy

• Status: Completed
• Trial end date: 2013-01-01
• Target enrollment: 0
• Participant gender: All

Summary

The purpose of this study is to explore the safety and efficacy of a sublingual (under the tongue) immunotherapy (SLIT) dosing regimen and an oral immunotherapy (OIT) regimen in inducing desensitization and long term tolerance in children with persistent peanut allergy.

• Phase: Phase 1/Phase 2
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: Johns Hopkins University

Criteria

Inclusion Criteria:

• Are ages 6 to 21 years of either sex, any race, and any ethnicity at the time of the initial visit.

• Have a physician diagnosed peanut allergy or a convincing clinical history of peanut allergy (urticaria, upper or lower respiratory symptoms, GI disturbances, rash or oral symptoms).

• Have a skin prick test positive to peanut (diameter of wheal 3 mm ≥ negative control) and detectable serum peanut-specific IgE level (UniCAP ≥ 0.35 kU/L).

• Have a positive reaction to a cumulative dose of ≤1,000 mg of peanut powder in the initial qualifying DBPCFC.

• Use an effective method of contraception by females of childbearing potential to prevent pregnancy and agree to continue to practice an acceptable method of contraception for the duration of their participation in the study.

• Ability to perform spirometry maneuvers in accordance with the American Thoracic Society (ATS) guidelines (1994).

• Have self-injectable epinephrine (i.e. EpiPen® or EpiPen Jr.®) available at all times.

• Provide signed informed consent (by parent or legal guardian if the subject is a minor) and informed assent if applicable.

Exclusion Criteria:

• Have a history of severe anaphylaxis to peanut with hypoxia (cyanosis or peripheral capillary oxygen saturation (SpO2) ≤92% at any stage), hypotension or neurological compromise (confusion, collapse, loss of consciousness or incontinence).

• Tolerates more than 1,000 mg of peanut powder at the initial qualifying DBPCFC.

• Have a viral upper respiratory infection (URI) or gastroenteritis within 7 days of OFC (OFC will need to be rescheduled).

• Currently participating in a study using an investigational new drug.

• Participation in any interventional study for the treatment of food allergy in the past 12 months.

• Pregnancy or lactation

• Allergy to placebo ingredients (Glycerin or oat flour) OR reacts to any dose of placebo during the qualifying OFC.

• Currently in a buildup phase of any allergy immunotherapy.

• Poor control of atopic dermatitis.

• Have pulmonary function tests with forced expiratory volume 1 (FEV1) value <80% predicted or any clinical features of greater than moderate persistent asthma and greater than high daily doses of inhaled corticosteroids (>500µg/day fluticasone or equivalent).

• Use of steroid medications (oral steroids, such as prednisone or Medrol, steroid injections, such as Kenalog, or IV or oral corticosteroid burst) in the following manners:

o History of daily oral steroid dosing within 4 weeks prior to baseline visit or for > 1 month during the past year or burst oral steroid course in the past 6 months or > 1 burst oral steroid course in the past year.

• Asthma requiring

• ≥1 hospitalization in the past year for asthma or

• >1 ER visit in the past 6 months for asthma

• Use of omalizumab or other non-traditional forms of allergen immunotherapy (e.g., oral or sublingual) or immuno-modulatory therapy (not including corticosteroids) or biologic therapy within the past year.

• Use of β-blockers (oral), angiotensin-converting enzyme (ACE) inhibitors, angiotensin-receptor blockers (ARB), calcium channel blockers or tricyclic antidepressant therapy.

• Inability to discontinue antihistamines for 5 days for long acting and 3 days for short acting prior to skin testing or OFC's.

• History of alcohol or drug abuse.

• Active eosinophilic gastrointestinal disease in the past two years.

• Have other significant medical conditions (e.g., liver, gastrointestinal, kidney, cardiovascular, pulmonary disease, or blood disorders) which, in the opinion of the Investigator, make the subject unsuitable for induction of food reactions.

• Any previous intubation due to allergies or asthma.

• Severe reaction at initial DBPCFC, defined as:

• Life-threatening anaphylaxis

• Requiring overnight hospitalization