A week before the U.S. FDA’s Oncologic Drugs Advisory Committee was to meet and review TG Therapeutics Inc.’s BLA and sNDA for the combo of ublituximab and Ukoniq (umbralisib) for treating chronic lymphocytic leukemia and small lymphocytic lymphoma, the company voluntarily withdrew the submission and now is rethinking its oncology programs. The move was tied to an FDA-requested analysis of phase III data showing that, while study met its primary endpoint, there was an imbalance in updated overall survival (OS) results favoring the control arm. A June 25 PDUFA date had been set for the combination treatment.
Executives of TG Therapeutics Inc. have promised a big year in 2021 and the company got off to strong start with accelerated FDA approval of umbralisib in marginal zone lymphoma and follicular lymphoma. Branded Ukoniq, the drug is the first oral, once-daily inhibitor of PI3K delta and CK1 epsilon and TG’s first commercial product. Pricing for Ukoniq has not yet been disclosed.
TG Therapeutics Inc. got a dose of good news when the independent data safety monitoring board recommended that the UNITY-CLL study be stopped early for superior efficacy after an interim analysis showed its umbralisib and ublituximab combination (U2) helped patients with chronic lymphocytic leukemia (CLL).
As TG Therapeutics Inc.'s phase IIb win in the follicular lymphoma (FL) cohort of the Unity-NHL pivotal experiment testing umbralisib charmed Wall Street, CEO Michael Weiss told investors that the New York-based company is "completely committed to getting our marginal zone lymphoma [MZL] filing in on time and getting to the market" soon. Nobody's forgetting about the opportunity in chronic lymphocytic leukemia (CLL), either.
