KPTI read out Ph2b results that will warrant an NDA filing for selexinor, its treatment for penta-refractory multiple myeloma (MM) The TAM for this treatment could produce up to $500mn in sales. MM is the third most common blood cancer in the U.S. Selexinor's market advantage is that it is an oral treatment competing against for-the-most-part less safe treatments. After these results, the company released plans to issue a $125mn stock offering.