https://www.prognyx.com/blog/selinexor-s-tp53-wild-type-bet-misses-xport-ec-042-returns-a-hazard-ratio-of-0-7Prognyxen2026-08-01Selinexor's TP53 wild-type bet misses: XPORT-EC-042 returns a hazard ratio of 0.76 (95% CI 0.51–1.12), double the SIENDO subgroup's 0.38