NEW YORK, June 12, 2020 (GLOBE NEWSWIRE) — TG Therapeutics, Inc. (NASDAQ: TGTX), today announced data presentations at the 25th European Hematology Association (EHA) annual congress including data from a Phase 1 study evaluating TG-1701, the Company’s once daily, selective, BTK inhibitor, as monotherapy and in combination with umbralisib and ublituximab (U2) in relapsed/refractory chronic lymphocytic leukemia (CLL) and lymphoma, as well as long term data from a Phase 1/1b study evaluating the combination of umbralisib and ibrutinib in relapsed/refractory CLL and mantle cell lymphoma (MCL).
Michael S. Weiss, the Company’s Executive Chairman and Chief Executive Officer stated, “We have long been excited about the potential for dual BCR blockade by targeting both PI3K-delta and BTK in the treatment of hematologic malignancies, and these data presentations offer insight into the therapeutic potential for this dual targeted approach. We are extremely pleased to see that TG-1701 continues to exhibit an encouraging safety and efficacy profile, both as a monotherapy and in our proprietary triplet combination with U2, with additional patients now treated and with longer follow-up. We now have patients on TG-1701 for upwards of 1.5 years, with no patients having discontinued therapy due to toxicity and responses deepening over time. We were also excited to see long-term data for the all-oral combination of umbralisib and ibrutinib, which similarly demonstrated continued improvement in overall response rates, and importantly identified no long-term safety signals at over 3.5 years of follow-up, underscoring the potential combinability of umbralisib with BTK therapy.” Mr. Weiss continued, “In striving towards our goal of developing novel combination treatments for patients with unmet medical needs, we are highly encouraged by the data presented today and look forward to continuing dose escalation for our proprietary triple combination of ublituximab, umbralisib and TG-1701.” Details of the data presentations are included below.Presentation Title: Safety and activity of the once daily selective bruton tyrosine kinase (BTK) inhibitor TG-1701 in patients with chronic lymphocytic leukemia (CLL) and lymphomaSafety and efficacy highlights include:TG-1701 monotherapy exhibited an encouraging preliminary safety profile across all dose levels evaluated with only 3% (2/69) of patients having a dose reduction due to treatment-related adverse events (AEs), with no treatment discontinuations due to AEs in the monotherapy cohortsIn the monotherapy dose escalation cohort (n=25), TG-1701 produced partial responses at all dose levels evaluated (100mg to 400mg once daily) in CLL, MCL, Waldenström’s macroglobulinemia (WM), and small lymphocytic lymphoma (SLL)In the monotherapy dose expansion cohort in which TG-1701 was administered at 200mg, 25 patients were evaluable for efficacy with a 92% overall response rate (ORR) observed in CLL patients (n=12), a 33% ORR in MCL patients (n=6), and a 86% ORR in WM patients (n=7) The combination of TG-1701 plus U2 has been well tolerated and demonstrated encouraging clinical activity with a 77% ORR across all disease types (n=13), including complete responses in three patients; dose escalation continuesPresentation Title: Long term results of a Phase I/Ib study of ibrutinib in combination with umbralisib in patients with relapsed/refractory CLL or MCLSafety and efficacy highlights include:With long term follow up (median follow-up of 43.5 months (range 8.4-61), there were no cumulative or recurrent late onset toxicities observedIn relapsed/refractory CLL, the overall response rate was 95% including a 29% complete response (CR) rate, and the 4-year Progression-free Survival (PFS) and Overall Survival (OS) were 78% and 90%, respectivelyIn relapsed/refractory MCL, the ORR was 71% with a 24% CR rate, and median PFS and OS were 10.8 and 30.7 months, respectivelyThe data presented is available on the Publications page, located within the Pipeline section, of the Company’s website at www.tgtherapeutics.com/publications.cfm.ABOUT TG THERAPEUTICS, INC.
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 multiple 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 dual inhibitor of PI3K-delta and CK1-epsilon, which may lead to a differentiated safety profile. 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 into Phase 1 clinical development its anti-PD-L1 monoclonal antibody, cosibelimab (TG-1501), its covalently-bound Bruton’s Tyrosine Kinase (BTK) inhibitor, TG-1701, as well as its anti-CD47/CD19 bispecific antibody, TG-1801. TG Therapeutics is headquartered in New York City.
Bay Street News
