Our results indicate that FVV are capable of efficient ex vivo gene transfer to synovium and merit further investigation as a means to provide long-term intra-articular transgene expression for arthritis treatment.
Summary Background Specific immunotherapy with insect venom (hymenoptera venom (HG)-AIT) is an effective and the only causal treatment for patients with systemic reactions due to IgE-mediated insect venom allergy. The present study investigated the quality of care after bee and wasp venom allergy, the tolerability of modified ultra-rush immunotherapy and the course after the conclusion of maintenance therapy in children and adolescents. Studies on the quality of life of children with insect venom allergy are scarce. Methods The efficacy, safety and tolerability of an ultra-rush protocol was analysed in 114 patients aged 4–17 years with insect venom allergy. After the end of HG-AIT, patients were contacted by questionnaire and asked to report on the quality of care as well as the course of insect venom allergy, including accidental stinging events. Quality of life was validated using the established questionnaire VQLQ‑d (Vespid Quality of Life Questionnaire), which is also used for bee venom allergy patients. Results Discontinuation of the initial therapy was not necessary in any patient. Side effects were mostly mild and did not require treatment. In 16 patients, a new sting reaction occurred during maintenance therapy, in another 15 patients a sting event was documented after cessation of HG-AIT. The intensity of the reaction to the accidental insect bite according to the severity classification after Ring and Messmer decreased from an average of 2.3 to 0.9 in these patients. This corresponds to a decrease of 61%. An emergency kit was carried by 70% of the patients, the expiry date of which, however, had already passed in almost 40% of the respondents. After the end of the therapy, most patients were not under any medical care or had never been to a check-up (92%). The evaluation of the VQLQ‑d showed a medium to low level of stress during or after therapy. Discussion Ultra-rush AIT in childhood and adolescence is safe, tolerable and effective. HG-AIT has a lasting positive effect on the health-related quality of life of patients. However, after the end of HG-AIT, there are deficits in the follow-up and care of the patients.
Our results indicate that FAD vectors are capable of efficient in vivo gene transfer to synovium and merit further investigation as a means of providing efficient and long-term intra-articular transgene expression for treatment of the arthritides.
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