TG Therapeutics, Inc. Announces Issuance of Composition of Matter Patent for TGR-1202 in the United States

NEW YORK, Feb. 23, 2016 -- TG Therapeutics, Inc. (Nasdaq:TGTX) today announced that the United States Patent and Trademark Office (USPTO) has issued a patent for the composition of matter of TGR-1202, the Company’s orally available PI3K delta inhibitor.  The patent, U.S. Patent No. 9,150,579 specifically covers TGR-1202, pharmaceutical compositions containing TGR-1202, and its use for treating various forms of leukemia, including chronic lymphocytic leukemia (CLL).  The patent was issued to Rhizen Pharmaceuticals SA and is exclusively licensed to TG Therapeutics pursuant to the Company’s existing license agreement with Rhizen Pharmaceuticals. The issuance affords patent protection for TGR-1202 in the US through July of 2033, exclusive of patent term extensions, which have the potential to extend beyond this date.  TGR-1202 is currently in Phase 3 clinical development.  

“We are happy to report the issuance of the first U.S. patent for TGR-1202 which provides composition of matter patent protection until at least 2033 and possibly longer with patent term extensions.  We believe this issuance strengthens our intellectual property position and should provide substantial market exclusivity for TGR-1202,” stated Michael S. Weiss, the Company's Executive Chairman and Interim CEO.  Mr. Weiss continued, “We look forward to continuing to strengthen our intellectual property position through the issuance of additional patents for our portfolio products both individually and in combination in the US and abroad.”

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 two therapies targeting hematological malignancies. TG-1101 (ublituximab) 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 TGR-1202, an orally available PI3K delta inhibitor. The delta isoform of PI3K is strongly expressed in cells of hematopoietic origin and is believed to be important in the proliferation and survival of B-lymphocytes. Both TG-1101 and TGR-1202 are in clinical development for patients with hematologic malignancies. The Company also has a pre-clinical program to develop IRAK4 inhibitors, as well as an antibody research program to develop anti-PD-L1 and anti-GITR antibodies. TG Therapeutics is headquartered in New York City.

Cautionary Statement

Some of the statements included in this press release, particularly those with respect to anticipating future clinical trials, the timing of commencing or completing such trials and possible success of those trials and business prospects for TG-1101, TGR-1202, TG-1303, the IRAK4 inhibitor program, and the anti-PD-L1 and anti-GITR antibodies 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.  Among the factors that could cause our actual results to differ materially are the following: our ability to successfully and cost-effectively complete pre-clinical and clinical trials for TG-1101, TGR-1202, TG-1303, the IRAK4 inhibitor program and the anti-PD-L1 and anti-GITR antibodies; the risk that early pre-clinical and clinical results that supported our decision to move forward with TG-1101, TGR-1202, TG-1303, the IRAK4 inhibitor program and the anti-PD-L1 and anti-GITR antibodies will not be reproduced in additional patients or in future studies; the risk that trends observed which underlie certain assumptions of future performance of TGR-1202 and TG-1303 will not continue, the risk that TGR-1202 or TG-1303 will not produce satisfactory safety and efficacy results to warrant further development following the completion of the current Phase 1 studies; the risk that the combination of TG-1303, will not prove to be a safe and efficacious backbone for triple and quad combination therapies; the risk that the data (both safety and efficacy) from future clinical trials will not coincide with the data produced from prior pre-clinical and clinical trials; the risk that trials will take longer to enroll than expected; our ability to achieve the milestones we project over the next year; our ability to manage our cash in line with our projections, and other risk factors identified from time to time in our reports filed with the Securities and Exchange Commission.  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.

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CONTACT: Jenna Bosco
Director- Investor Relations
TG Therapeutics, Inc.
Telephone: 212.554.4351
Email: [email protected]