EIF4EBP1 and lymphangioleiomyomatosis: Expression of the ratios of immunoblot pS6/S6, p4E-BP1/4E-BP1, and peIF4E/eIF4E are shown in Figure 3E. Both Torin1 and rapamycin, but not eFT508, inhibited the growth of LAM patient-derived angiomyolipoma 621–102 cells (Figure 3F).