Eosinophilic esophagitis (EoE) is a chronic esophageal atopic disease because sensitization to aeroallergens and foods allergens is very common. This study is the first work that studies multiple characteristics of EoE in the southeast of Spain to know whether EoE in the patients of this region is similar to that of other regions of Spain in terms of demography, symptoms, and atopic characteristics. It is an observational prospective study of patients diagnosed with EoE at Granada (Spain). We recorded demographic data (age, sex, and personal history of atopy), clinical data (impaction and dysphagia), allergologic data (prick test and specific immunoglobulin E) to foods, aeroallergen, and pan-allergens, and other endoscopic-histologic data and comorbidities. The demographic, allergologic, and endoscopic characteristics of patients with EoE in Granada were similar to the rest of Spain, except the higher frequency of sensitization to olive pollen, food allergy, and anaphylaxis reactions. The higher frequency of sensitization to olive pollen and food allergy with severe clinical manifestations (anaphylaxis) in patients with EoE in Granada could have a negative impact on patients' quality of life. The higher frequency of sensitization to olive pollen and food allergy with severe clinical manifestations (anaphylaxis) in patients with EoE in Granada could have a negative impact on patients' quality of life. Syndromic immunodeficiencies are a genetically and pathophysiologically heterogeneous group of inborn errors of immunity. These are characterized by multiple extra immune clinical symptoms and a wide range of immunological phenotypes with increased susceptibility to infections, autoimmune phenomena, immune dysregulation, organ-specific pathology, and malignancy. To increase the pediatricians' awareness of this multifaceted group of primary immunodeficiencies in children. A comprehensive review of genetic background and clinical symptomatology of syndromic immunodeficiencies as well as current diagnostic approach and treatment modalities. From the pediatrician's perspective, an early-life diagnosis of syndromic immunodeficiencies, which is frequently indispensable for successful life-saving immunocorrection, poses a diagnostic challenge. Increased pediatricians' awareness to recognize signs and symptoms of these diseases in affected children is of paramount importance. Current advances in molecular biotechnology and immunogenetics, resulting in the implementation of newborn screening and new-generation sequencing, provide informative tools for definitive diagnosis and, in many new disease entities, for their definition and genotype-phenotype delineation and correlation. A broad spectrum of clinical phenotypes in children with syndromic primary immunodeficiencies requires pediatrician's special attention, that is, individualized multidisciplinary approach under the supervision of a clinical immunologist. A broad spectrum of clinical phenotypes in children with syndromic primary immunodeficiencies requires pediatrician's special attention, that is, individualized multidisciplinary approach under the supervision of a clinical immunologist. To systematically evaluate the association between gene polymorphisms (rs17250932, rs2240017, and rs4794067) and the risk of autoimmune diseases in Asian populations. The Medline, Web of Science, and Chinese Biomedical Literature Database were used to retrieve eligible studies that were published before July 2020. Pooled odds ratios (ORs) and 95% confidence intervals (95% CIs) were calculated by using the dominant model, heterozygote contrast model, and allelic contrast model. Publication bias was evaluated using contour-enhanced funnel plots and Egger's regression test. Sensitivity analysis was conducted to assess the robustness of this meta-analysis. A total of 12 eligible studies including 3834 patients and 4824 healthy controls were recruited in this meta-analysis. The pooled data demonstrated that rs2240017 and rs4794067 polymorphisms are significantly associated with the risk of autoimmune diseases in Asian populations in allelic contrast model (OR 1.456, 95% CI 1.131-1.875, p=0.004; OR 0.766, 95% CI 0.615-0.954, p=0.017), heterozygote comparison model (OR 1.647, 95% CI 1.239-2.189, p=0.001; OR 0.796, 95% CI 0.634-0.999, p=0.049), and dominant mode (OR 1.572, 95% CI 1.194-2.071, p=0.004; OR 0.767, 95% CI 0.607-0.970, p=0.027). The G allele of rs2240017 may be a risk factor for autoimmune diseases and the T allele of rs4794067 may increase the risk of autoimmune diseases. However, we failed to find evidence of the association between rs17250932 polymorphism and susceptibility to autoimmune diseases. No publication bias was found in this meta-analysis. This meta-analysis indicated that rs2240017 and rs4794067 polymorphisms confer susceptibility to autoimmune diseases, but not rs17250932. This meta-analysis indicated that TBX21 rs2240017 and rs4794067 polymorphisms confer susceptibility to autoimmune diseases, but not rs17250932.Evidence regarding allergen immunotherapy (AIT) in pediatric population is scarce. We have assessed safety and effectiveness of subcutaneous AIT with a microcrystalline tyrosine (MCT)-associated mite allergoid, Acarovac Plus®, in children and adolescents with allergic rhinitis (AR), with and without asthma, in the real-world setting. This was a retrospective, multicenter study including children and adolescents aged 5 years to 17 years with AR, with and without asthma, and sensitized to mites, receiving AIT with Acarovac Plus® during ≥6 months. Primary and secondary objectives were safety and effectiveness, respectively. Effectiveness variables were assessed during 12 months before and after AIT and included unscheduled visits to the healthcare center and emergency room admissions, rhinitis and asthma symptoms according to ARIA and GEMA classifications, respectively, medication use, and patients' and physicians' disease perception graded on a visual analog scale (VAS). All 79 patients included had a mean (SD) age of 12.7 (3.3) years. https://www.selleckchem.com/ Two patients experienced systemic adverse reactions (none severe). Unscheduled visits to the healthcare center and emergency room admissions decreased (mean (SD) 3.02 [2.48] and 0.63 [1.35] vs. 1.08 [1.38] and 0.09 [0.38], before and after treatment, p less then 0.001 and p = 0.001, respectively). After AIT, rhinitis and asthma classification changed (p less then 0.0001 for all classifications), showing improvements in symptoms and a significant decrease in rhinitis and use of medication for asthma and VAS scores grading patients' and physicians' disease perception (p less then 0.001). In conclusion, these results show that AIT with an MCT-associated mite allergoid appears safe and effective in children and adolescents with AR treated in the real-world setting.