A recurrent activating missense mutation in Waldenström macroglobulinemia affects the DNA binding of the ETS transcription factor SPI1 and enhances proliferation by Roos-Weil, D, Decaudin, C, Armand, M, Della-Valle, V, Diop, M, Ghamlouch, H, Ropars, V, Herate, C, Lara, D, Durot, E, Haddad, R, Mylonas, E, Damm, F, Pflumio, F, Stoilova, B, Metzner, M, Elemento, O, Dessen, P, Camara-Clayette, V, Cosset, F, Verhoeyen, E, Leblond, V, Ribrag, V, Cornillet-Lefebvre, P, Rameau, P, Azar, N, Charlotte, F, Morel, P, Charbonnier, J, Vyas, P, Mercher, T, Aoufouchi, S, Droin, N, Guillouf, C, Nguyen-Khac, F, Bernard, O