This project intends the analysis and profiling of specific antibodies against major peanut allergens in peanut allergic individuals and molecular cloning of human antibodies against major peanut allergens.

• Characterization of patient samples reactivity (sera obtained from blood) against major peanut allergens.
• Isolation of antibody-producing B cells.
• Molecular cloning of peanut-specific antibodies from antibody gene sequences obtained from B cells.
• Biophysical and functional characterization of isolated antibodies

Inclusion Criteria:

• Participants have a described clinical history of peanut allergy and/or are sensitized to peanut allergens (as evidenced by positive skin prick test and allergen-specific IgE testing)
• Male and female subjects older than 3 years
• Written informed consent

Exclusion Criteria:

• age below three years
• patients suffering from any disease where blood withdrawals might impact the patients' health status such as known anemia.

The project population includes patients of at least three years of age with a described history of peanut allergy and/or sensitization to peanut allergens (as evidenced by positive skin prick test or allergen-specific IgE testing).