TG Therapeutics Announces Publication of Clinical Data from the Phase I/Ib Combination Trial of Ublituximab and Umbralisib (“U2”) in Blood
U2 combination was generally well-tolerated with relatively low rates of immune-mediated toxicities
Combination treatment resulted in median progression free survival (PFS) of ~28 months in relapsed/refractory chronic lymphocytic leukemia (CLL)
The paper includes safety and efficacy information from patients with chronic lymphocytic leukemia (CLL) and non-Hodgkin Lymphoma (
Efficacy data was available from 69 patients and showed the combination to be highly active with a 72.5% clinical benefit rate (defined as patients obtaining a Complete Response, Partial Response, or Stable Disease) across all subtypes of B-cell cancers enrolled in the study. Of note, a median PFS of 27.57 months was observed in patients with relapsed/refractory CLL (n=15) treated at therapeutic dose levels of umbralisib and a 65% overall response rate (ORR) was observed in patients relapsed/refractory indolent
These data are described further in the manuscript entitled, “Ublituximab and Umbralisib in Relapsed/ Refractory B-cell Non-Hodgkin Lymphoma and Chronic Lymphocytic Leukemia,” which was published online in the First Edition section of Blood, the
TG Therapeutics is a biopharmaceutical company focused on the acquisition, development and commercialization of novel treatments for B-cell malignancies and autoimmune diseases. Currently, the company is developing two therapies targeting hematological malignancies and autoimmune diseases. Ublituximab (TG-1101) is a novel, glycoengineered monoclonal antibody that targets a specific and unique epitope on the CD20 antigen found on mature B-lymphocytes. TG Therapeutics is also developing umbralisib (TGR-1202), an oral, once-daily inhibitor of PI3K-delta. Umbralisib uniquely inhibits CK1-epsilon, which may allow it to overcome certain tolerability issues associated with first generation PI3K-delta inhibitors. Both ublituximab and umbralisib, or the combination of which is referred to as "U2", are in Phase 3 clinical development for patients with hematologic malignancies, with ublituximab also in Phase 3 clinical development for Multiple Sclerosis. Additionally, the Company has recently brought its anti-PD-L1 monoclonal antibody, TG-1501, as well as its covalently-bound Bruton Tyrosine Kinase (BTK) inhibitor, TG-1701, into Phase 1 development and aims to bring additional pipeline assets into the clinic in the future. TG Therapeutics is headquartered in New York City.
Some of the statements included in this press release may be forward-looking statements that involve a number of risks and uncertainties. For those statements, we claim the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. In addition to the risk factors identified from time to time in our reports filed with the Securities and Exchange Commission, factors that could cause our actual results to differ materially are the following: our ability to successfully and cost effectively complete preclinical and clinical trials; the risk that early preclinical and clinical trial results, that may have supported the acceptance of our data for publication or influenced our decision to proceed with additional clinical trials, will not be reproduced in future studies or in future data presentations; the risk that umbralisib will not maintain its differentiated safety profile as patients continue to be treated on drug for longer durations and more patients are enrolled; the risk that the combination of ublituximab (TG-1101) and umbralisib (TGR-1202), referred to as U2 and being studied in the UNITY clinical trials, will not prove to be a safe and efficacious combination, or backbone for triple therapy combinations; the risk that the data from the UNITY clinical trials will not support any potential approvals. Any forward-looking statements set forth in this press release speak only as of the date of this press release. We do not undertake to update any of these forward-looking statements to reflect events or circumstances that occur after the date hereof. This press release and prior releases are available at www.tgtherapeutics.com. The information found on our website is not incorporated by reference into this press release and is included for reference purposes only.
Senior Vice President,
Source: TG Therapeutics, Inc.