On January 22, 2019 TG Therapeutics, Inc. (NASDAQ: TGTX), a biopharmaceutical company dedicated to developing medicines for patients with B-cell mediated diseases, reported that the U.S. Food and Drug Administration (FDA) has granted Breakthrough Therapy Designation for umbralisib (TGR-1202) for the treatment of adult patients with marginal zone lymphoma (MZL) who have received at least one prior anti-CD20 regimen (Press release, TG Therapeutics, JAN 22, 2019, View Source [SID1234532809]). There are currently no fully approved agents for MZL.
The Breakthrough Therapy Designation was based on interim data from the MZL cohort evaluating umbralisib monotherapy in the ongoing UNITY-NHL Phase 2b registration-directed clinical trial.
Michael S. Weiss, the Company’s Executive Chairman and Chief Executive Officer stated, "We look forward to working closely with the FDA to bring umbralisib, our novel PI3K-delta inhibitor to patients as quickly as possible. MZL patients who fail initial chemo-immunotherapy are left with limited treatment options. We believe umbralisib can play an important role in fulfilling this unmet medical need. The MZL single agent umbralisib cohort of the UNITY-NHL study is fully enrolled and we look forward to reporting top-line results from this cohort by mid-year and presenting the data at a major medical meeting in 2019."
About Breakthrough Therapy Designation
The FDA’s Breakthrough Therapy designation is intended to expedite the development and review of a drug candidate that is planned to treat a serious or life-threatening disease or condition and preliminary clinical evidence indicates that the drug may demonstrate substantial improvement on one or more clinically significant endpoints over available therapies.
About Marginal Zone Lymphoma
Marginal zone lymphoma (MZL) comprises a group of indolent (slow growing) B-cell non-Hodgkin lymphomas (NHLs) that begin forming in the marginal zone of lymphoid tissue. With an annual incidence of approximately 7,500 newly diagnosed patients, MZL is the third most common B-cell NHL accounting for approximately eight percent of all NHL cases.i MZL consists of three different subtypes: extranodal MZL of the mucosal-associated lymphoid tissue (MALT), nodal marginal zone lymphoma (NMZL), and splenic marginal zone lymphoma (SMZL).
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