TG Therapeutics (TGTX) Announces FDA Accelerated Approval of UKONIQ
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TG Therapeutics, Inc. (NASDAQ: TGTX), today announced the U.S. Food and Drug Administration (FDA) has approved UKONIQ™ (umbralisib), for the treatment of adult patients with relapsed or refractory marginal zone lymphoma (MZL) who have received at least one prior anti-CD20 based regimen and adult patients with relapsed or refractory follicular lymphoma (FL) who have received at least three prior lines of systemic therapy.
UKONIQ is the first and only, oral, once daily, inhibitor of phosphoinositide 3 kinase (PI3K) delta and casein kinase 1 (CK1) epsilon. Accelerated approval was granted for these indications based on overall response rate (ORR) data from the Phase 2 UNITY-NHL Trial (NCT02793583). Continued approval for these indications may be contingent upon verification and description of clinical benefit in a confirmatory trial. This application was granted priority review for the MZL indication. In addition, UKONIQ was granted Breakthrough Therapy Designation (BTD) for the treatment of MZL and orphan drug designation (ODD) for the treatment of MZL and FL.
Michael S. Weiss, Executive Chairman and Chief Executive Officer of TG Therapeutics stated, “Today’s approval of UKONIQ marks a historic day for our Company with this being our first approval and we are extremely pleased to be able to bring our novel inhibitor of PI3K-delta and CK1-epsilon to patients with relapsed/refractory MZL and FL. We have built a commercial team with significant experience who will immediately start to engage our customers to educate them on UKONIQ and how to access the product for patients in need and expect to make UKONIQ available to US distributors in the next few days.” Mr. Weiss continued, “We want to thank the patients, physicians, nurses and clinical coordinators for their support and participation in our clinical trials, and the FDA for their collaboration throughout this process. We remain dedicated to patients with B-cell diseases and our mission of developing treatment options for those in need.”
“Despite treatment advances, MZL and FL remain incurable diseases with limited treatment options for patients who relapse after prior therapy and no defined standard of care. With the approval of umbralisib we now have a targeted, oral, once-daily option, offering a needed treatment alternative for patients,” stated Dr. Nathan Fowler, Professor of Medicine at The University of Texas MD Anderson Cancer Center and the Study Chair of the UNITY-NHL MZL &FL cohorts.
“The approval of umbralisib for the treatment of relapsed/refractory marginal zone lymphoma and follicular lymphoma offers patients a new treatment option, and new hope in the fight against these diseases,” stated Meghan Gutierrez, Chief Executive Officer of the Lymphoma Research Foundation.
EFFICACY & SAFETY DATA IN RELAPSED/REFRACTORY MZL AND FLThe efficacy of UKONIQ monotherapy was evaluated in two single-arm cohorts, within the Phase 2 UNITY-NHL clinical trial, in 69 patients with MZL who received at least 1 prior therapy, including an anti-CD20 regimen, and in 117 patients with FL who received at least 2 prior systemic therapies, including an anti-CD20 monoclonal antibody and an alkylating agent. The UNITY-NHL Phase 2 trial is an open-label, multi-center, multi-cohort study with patients receiving UKONIQ 800 mg once daily. The primary endpoint was independent review committee (IRC) assessed overall response rate (ORR) according to the Revised International Working Group Criteria.
|Endpoint per IRC||UKONIQMZL (n=69)||UKONIQFL (n=117)|
|ORR, n (%)||34 (49)||50 (43)|
|95% CI||37.0, 61.6||33.6, 52.2|
|Complete Response, n (%)||11 (16)||4 (3.4)|
|Partial Response, n (%)||23 (33)||46 (39)|
|Duration of Response|
|Median, months (95% CI)||NR (9.3, NE)||11.1 (8.3, 16.4)|
|Range, months||0.0+, 21.8+||0.0+, 20.9+|
CI, confidence interval; NR, not reached; NE, not evaluable +Denotes censored observation
The safety of UKONIQ monotherapy was based on a pooled population from the 221 adults with MZL and FL in three single arm, open label trials and one open label extension trial. Patients received UKONIQ 800 mg orally once daily. Serious adverse reactions occurred in 18% of patients who received UKONIQ. Serious adverse reactions that occurred in ≥2% of patients were diarrhea-colitis (4%), pneumonia (3%), sepsis (2%), and urinary tract infection (2%). The most common adverse reactions (>15%), including laboratory abnormalities, were increased creatinine (79%), diarrhea-colitis (58%, 2%), fatigue (41%), nausea (38%), neutropenia (33%), ALT increase (33%), AST increase (32%), musculoskeletal pain (27%), anemia (27%), thrombocytopenia (26%), upper respiratory tract infection (21%), vomiting (21%), abdominal pain (19%), decreased appetite (19%), and rash (18%).
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