Gains of the proto-oncogene BCL11A and nuclear accumulation of BCL11A(XL) protein are frequent in primary mediastinal B-cell lymphoma. - Weniger, M; Pulford, K; Gesk, S; Ehrlich, S; Banham, A; Lyne, L; Martin-Subero, J; Siebert, R; Dyer, M; Möller, P; Barth, T (Leukemia, 2006)