Safety evaluation of a multiallergen immunotherapy treatment in polyallergic patients. APOLO observational study

Aim: Assessment of safety, tolerability and changes in global clinical impression with an multiallergen immunotherapy treatment without dilutional effect in polyallergic patients. Patients & methods: This observational prospective study included patients with allergic rhinitis-rhinoconjunctivitis with or without asthma between 5 and 60 years old receiving immunotherapy treatment with a mixture of two allergenic sources. All adverse events were recorded. Global clinical impression, tolerability subjective assessment and satisfaction were also assessed. Results: 130 patients were analyzed. Nine clinically relevant local adverse reactions were reported in six patients (4.6%). Six systemic reactions (grades 0-I) occurred in four patients (3.1%). Patients improved significantly in their global clinical impression. Good tolerability subjective assessment and satisfaction values were also observed. Conclusion: This multiallergen immunotherapy treatment without dilutional effect can be considered as a potential therapeutic alternative for polyallergic patients suffering from allergic rhinitis.