@article {10851, title = {Theophylline as a precision therapy in a young girl with PIK3R1 immunodeficiency.}, journal = {J Allergy Clin Immunol Pract}, volume = {6}, year = {2018}, month = {2018 Nov - Dec}, pages = {2165-2167}, issn = {2213-2201}, doi = {10.1016/j.jaip.2018.02.029}, author = {Valencic, Erica and Grasso, Antonio Giacomo and Conversano, Ester and Lucaf{\`o}, Marianna and Piscianz, Elisa and Gregori, Massimo and Conti, Francesca and Cancrini, Caterina and Tommasini, Alberto} }