Martinelli S, Maffei R, Fiorcari S, Quadrelli C, Zucchini P, Benatti S, Potenza L, Luppi M, Marasca R. Idelalisib impairs T-cell-mediated immunity in chronic lymphocytic leukemia. Haematologica 2018; 103(12):e598-e601; https://doi.org/10.3324/haematol.2017.187070.