Improving pollen immunotherapy: minor allergens and panallergens.

Area of Science:

• Allergy and Immunology
• Biochemistry of Allergens
• Clinical Diagnostics

Background:

• Multiple pollen sensitizations are common in Spain, impacting immunotherapy efficacy.
• Accurate diagnosis is essential for personalized allergy treatment.
• Pollen allergens comprise 29 protein families, including abundant expansins, prophyllins, and polcalcins.

Purpose of the Study:

• To highlight the importance of optimizing allergy diagnosis for immunotherapy.
• To differentiate cross-reactivity from true multi-sensitization.
• To discuss the role of specific allergen families in disease severity and treatment decisions.

Main Methods:

• Review of current understanding of pollen allergen families.
• Analysis of cross-reactivity patterns attributed to panallergens (prophyllins, polcalcins).
• Evaluation of the clinical significance of specific allergen families like lipid transfer proteins (LTPs).

Main Results:

• Panallergens like prophyllins and polcalcins cause cross-reactivity, often mistaken for multi-sensitization.
• Lipid transfer proteins (LTPs) are linked to severe allergic diseases, aiding immunotherapy indication.
• Recombinant allergens are available for diagnostics, but immunotherapy uses natural proteins.

Conclusions:

• Accurate diagnosis, considering panallergens and specific allergens, is key for successful immunotherapy.
• Allergen quantification in vaccine extracts is becoming standard practice.
• Further research into allergen families can refine diagnostic and therapeutic approaches.