Cetinkaja et al. showed that neutropenia (<1500/mm3) and eosinophilia (450 mm3) were significantly increased in severe cases and that positive IgE for food allergens or non-IgE-mediated multiple food allergies, feeding with cow’s-milk-based formula (at least once during infancy) and, most of all, delayed complementary feeding (OR 5.438 [95% CI, 2.693–10.981], p < 0.001) were the predictors for late tolerance [25]. This evidence concerns the gene IGHE and neutropenia.