Safety issues have felled another member of the phosphatidylinositol 3-kinase (PI3K) inhibitor class, TG Therapeutics, Inc.’s lymphoma drug Ukoniq (umbralisib), and with it combination use with a new anti-CD20 monoclonal antibody, ublituximab, in oncology indications.
On 15 April, TG Therapeutics announced it had withdrawn the pending US applications for the combination of ublituximab and umbralisib (“U2”) for the treatment of adults with chronic