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Purpose: Bronchial asthma is a common chronic respiratory disease in children with complex pathogenesis, characterized by airway hyper-responsiveness, obstruction, mucus hyperproduction, and airway remodeling. Autophagy is important for cellular physiology, and the ATG5 rs510432 has recently been implicated in several fundamental characteristics of childhood asthma pathogenesis and may play a role in the disease progression. This study aims to assess the expression of ATG5 messenger RNA (mRNA) according to rs510432 polymorphism in asthmatic children and to evaluate their possible relation with the development of the disease.Methods: ATG5 mRNA expression and rs510432 polymorphism were measured using real-time polymerase chain reaction in 57 asthmatic children patients and 46 healthy controls.Results: ATG5 level was significantly higher in asthmatic children than in controls and a significant increase in the frequency of TT and CC genotype of ATG5 rs510432 gene polymorphism was found in asthmatic patients when compared to control subjects (p < 0.001; and p = 0.01, respectively), and there was a statistically significant decrease in the frequency of CT genotype of ATG5 rs510432 gene polymorphism in asthmatic patients when compared to control subjects (p < 0.001).Conclusion: ATG5 rs510432 gene polymorphism plays an important role in childhood asthma pathogenesis.

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Background The hematopoietic malignancy acute myeloid leukemia is a fatal disease with poor clinical prognoses. Long non-coding RNA taurine-upregulated gene1 (lncRNA TUG1) and zinc finger E-box binding homeobox 2 antisense RNA1 (lncRNA ZEB2-AS1) are reported to participate in the development and progression of different types of malignancies. The goal of the current study was to evaluate the prognostic value of the lncRNAs TUG1 and ZEB2-AS1 as well as their various expression patterns in newly diagnosed Egyptian adult acute myeloid leukemia patients. Methods We assessed the expression levels of both lncRNA TUG1 and lncRNA ZEB2-AS1 using the quantitative real-time reverse transcription polymerase chain reaction technique (qRT-PCR) in 80 newly diagnosed AML patients and 20 healthy subjects. Results lncRNA TUG1 expression was significantly higher in the AML cases compared to the controls (P < 0.001), whereas lncRNA ZEB2-AS1 expression was considerably lower in the AML cases in comparison with the controls (P < 0.001). The expression levels of the lncRNAs ZEB2-AS1 and TUG1 exhibited a significantly positive association in the AML group (P < 0.001). There was no difference in overall survival (OS) and disease-free survival (DFS) between the groups with low and high lncRNA TUG1 expression (P = 0.139 and 0.918, respectively). Furthermore, the AML cases with higher lncRNA ZEB2-AS1 expression levels had shorter DFS than patients with lower lncRNA ZEB2-AS1 expression levels (P = 0.014), while OS did not significantly differ between the studied cases with lower and higher lncRNA ZEB2-AS1 expression (P = 0.589). Conclusion Overexpression of lncRNA TUG1 could serve as a diagnostic biomarker for Egyptian adult AML cases, while lncRNA ZEB2-AS1 high expression could be regarded as an indicator of poor outcome in Egyptian adult AML studied cases.