The RP2D is selinexor (100 mg once weekly), bortezomib (1.3 mg/m2 once weekly for 4 weeks), and dexamethasone (40 mg once weekly) per 35-day cycle....Two of the 4 patients with documented high-risk cytogenetics at screening responded to therapy, including 1 CR t(4;14) and 1 VGPR del(17p), and were maintained on study for 17.8 and 23.0+ months, respectively...