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The adherence rate to SCIT in our study was relatively high, in contrast to previous real-life data. Results of our study indicated that a close relationship between allergists and their patients during SCIT and the follow-up period in the same center improved the outcome of SCIT.

We may conclude that FA/NAFH in the Turkish population seems to be low when compared with Northern and Western European countries. This may be due to genetic, cultural or dietary factors, and further studies evaluating the reasons for this low prevalence of FA/NAFH in our population are needed.

Background: No published data presently exist concerning hereditary angioedema (HAE) in Turkey. The aim of the study was to initiate a preliminary multicentric evaluation about HAE and to determine the genetic properties of Turkish patients. Methods: Based on records drawn from four medical centers we identified a total of 70 subjects, belonging to 60 unrelated families, fulfilling clinical and laboratory criteria for diagnosis of HAE with C1 inhibitor deficiency. Ten type I patients, and their first-degree relatives, underwent genetic analysis for HAE. Results: The majority of patients were female (60%), the mean age was 37.7 ± 14.1 years. The mean age at the time of first angioedema symptom was 12.5 ± 9.2 years. Mean time lag between first symptom and diagnosis was 26 ± 14.4 years. All but 3 subjects had HAE type I. Family history of angioedema was present in 75.7% of the cases. Cutaneous swelling was reported by 87.1% of the patients, facial edema by 65%, abdominal symptoms by 74.3% and approximately one half (55.7%) had experienced one or more laryngeal attack. Genetic analysis of 10 families demonstrated that 5 carried a mutation that had never been previously described. Conclusion: We found that the clinical features of Turkish HAE patients were consistent with previously described patterns of this rare disease. The most noteworthy feature identified in the study was a significantly long duration between the first symptom appearance and final diagnosis. Our detection of different mutations in 10 patients confirms the allelic heterogeneity of the disease.

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