Xpovio (selinexor), an oral selective inhibitor of nuclear transport from Karyopharm Therapeutics Inc., of Newton, Mass., received FDA approval today for treating adults with relapsed or refractory diffuse large B-cell lymphoma (DLBCL), including DLBCL arising from follicular lymphoma, after at least two lines of systemic therapy. Xpovio will be available immediately in the U.S., the company said, and, due to COVID-19 restrictions, the launch will be a virtual one.