METTL14 and allergic respiratory disease: Finally, we applied various algorithms to analyze the intersection of the foregoing hub genes to identify the key gene METTL14, suggesting that METTL14 is a key m6A regulator for respiratory allergies by plotting the ROC curve of METTL14. In this study, we used multiple approaches for predictive modeling and SVM algorithms to cluster the samples from multiple perspectives, thus narrowing down the screening range of key genes and avoiding the lack of accuracy associated with single-dimensional screening methods.