TP53BP1 and non-Hodgkin lymphoma: Moreover, 53BP1 was more frequently expressed in GSTT1-negative cases than in GSTT1-positive cases [DLBCL, 85.7% (12/14) vs 45.5% (5/11), P = 0.032, T-NHL, 100% (4/4) vs 0% (0/4), P = 0.028].