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Treatment of Severe Peanut Allergy With Xolair (Omalizumab) and Oral Immunotherapy

Study Purpose

Severe peanut allergy is different from other allergic reactions because it can lead to fatal reactions and is an invisible disability. There is no cure today. The purpose of this study is to treat children and adolescents with severe peanut allergy with oral immunotherapy with peanuts under the protection of anti-IgE (immunoglobulin E) antibodies (omalizumab), and thereby inducing tolerance to peanuts. The treatment will be monitored by basophil cell stimulation (CD-sens).

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.

An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.

Searching Both is inclusive of interventional and observational studies.

Eligible Ages 12 Years - 22 Years
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

- IgE to peanut, Ara h 1, Ara h 2 and Ara h 3 - IgE to an airborne allergen i.e. cat, dog, horse, birch, grass etc. - Clinical allergic reactions to peanut the last 5 years - Positive conjunctival challenge to the selected airborne allergen - Positive CD-sens to peanut and the selected airborne allergen - IgE according to the recommendations of the manufacturer - Written consent

Exclusion Criteria:

- No severe diseases like renal failure, hart disease, immunodeficiency, diabetes or other severe chronic diseases - Pregnancy - No previous hypersensitivity reactions to sucrose, histidine, polysorbat 20 or omalizumab

Trial Details

Trial ID:

This trial id was obtained from ClinicalTrials.gov, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.


Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Phase 2
Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

Caroline Nilsson
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

Caroline Nilsson, MD, PhD
Principal Investigator Affiliation Dept of Clinical Science and Education, Karolinska Institutet
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Overall Status Active, not recruiting
Countries Sweden

The disease, disorder, syndrome, illness, or injury that is being studied.

Peanut Allergy
Additional Details

Oral immunotherapy (OIT), where the food protein is consumed in increasing amounts, have been studied with good results, but allergic reactions has been a major problem. Anti-IgE antibodies (omalizumab) block allergy antibodies so that the allergic reaction is absent. A new test in which basophil cells stimulated with allergen in vitro, CD-sens, showing cell sensitivity, correlates well to peanut challenges. Twenty children/adolescents, 12 to 22 years, with severe peanut allergy will be treated with omalizumab and the effect evaluated with CD-sens. If the CD-sens is negative a peanut challenge will be performed. If the challenge is negative the OIT will start: 1, 2, 4, 8 g peanuts/day in two-week intervals followed by a maintenance dose of 10 g peanuts/day while continuing treatment with omalizumab. If the CD-sens is still negative the withdrawal of omalizumab will start by halving the dose in several steps. The study is independent of pharmaceutical companies. Omalizumab is dosed according to body mass and the amount of total IgE antibodies and therefore every individual has an individual study duration. In average the duration of the study is estimated to 52 weeks +/-40/20 weeks. Inclusion in the study is expected to last for the 2 coming years. A treatment without serious side effects for those with severe food allergies would give a great benefit with reduced anxiety and fear, but also major health economic benefits in the form of fewer hospitalizations, sick leave, and to a greater extent completed school and education.

Arms & Interventions


Experimental: Omalizumab

Omalizumab is given to protect the study object from severe allergic reactions while they are going through oral immunotherapy with peanuts. There wïll be only one arm. The study objects are their own controls by also having allergy to airborne allergens. The dose is calculated by the study objects body mass and number of total IgE antibodies.


Drug: - Omalizumab

Omalizumab is the treatment during oral immunotherapy with peanuts as protection

Contact a Trial Team

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International Sites

Stockholm, Sweden



Sachs´ Children´s Hospital, Södersjukhuset

Stockholm, , 11883

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