U.S. FDA Grants BRUKINSA® (Zanubrutinib) Approval in Waldenström’s Macroglobulinemia
- Category: Small Molecules
- Published on Thursday, 02 September 2021 12:58
- Hits: 1137
This marks the second FDA approval for BRUKINSA and its third approval in Waldenström’s macroglobulinemia globally
The approval is based on Phase 3 ASPEN trial comparing BRUKINSA against ibrutinib
CAMBRIDGE, MA, USA & BEIJING, China I September 01, 2021 IBeiGene, Ltd. (NASDAQ: BGNE; HKEX: 06160), a global biotechnology company focused on developing and commercializing innovative medicines worldwide, today announced that BRUKINSA® (zanubrutinib) has received approval from the U.S. Food and Drug Administration (FDA) for the treatment of adult patients with Waldenström’s macroglobulinemia (WM).
“We are delighted by today’s FDA approval for BRUKINSA in its second indication, offering a new treatment option with demonstrated efficacy and safety benefits for patients with Waldenström’s macroglobulinemia. As shown in the ASPEN trial, BRUKINSA can improve treatment outcomes for these patients and potentially make a positive impact on their lives,” commented Jane Huang, M.D., Chief Medical Officer, Hematology at BeiGene.
Dr. Huang continued, “With 11 regulatory approvals in under two years, including two in the U.S., BRUKINSA is demonstrating its growing utility as a treatment option for B-cell malignancies and expanding its footprint to potentially benefit more patients worldwide. We will continue to evaluate BRUKINSA in its broad global clinical program and look forward to additional clinical evidence to establish its position as a potentially best-in-class medicine.”
“The ASPEN trial provided compelling evidence that BRUKINSA is a highly active BTK inhibitor in Waldenström’s macroglobulinemia, and compared to the first-generation BTK inhibitor, showed improved tolerability across a number of clinically important side effects. The approval of BRUKINSA provides an important new option for targeted therapy in Waldenström’s macroglobulinemia,” said Steven Treon, M.D., Ph.D., Director of the Bing Center for Waldenström’s Macroglobulinemia Research at the Dana-Farber Cancer Institute and Professor of Medicine at Harvard Medical School.
“The approval of BRUKINSA in Waldenström’s macroglobulinemia, which is the second therapy approved specifically for the treatment of this rare type of lymphoma, is positive news for patients. Expanded treatment options offer new hope for those living with this disease and can potentially improve patient experience, especially oral therapies that can be given as a single agent,” said Pete DeNardis, Chair of the Board at the International Waldenström’s Macroglobulinemia Foundation (IWMF).
The FDA’s approval of BRUKINSA in WM is primarily based on efficacy results from the multicenter, open-label Phase 3 ASPEN trial (NCT03053440) comparing BRUKINSA to ibrutinib in patients with WM. A total of 201 patients with a MYD88 mutation (MYD88MUT) were enrolled in the randomized Cohort 1.
The primary efficacy endpoint of the ASPEN trial was very good partial response (VGPR) rate in the overall intention-to-treat (ITT) population as assessed by independent review committee (IRC). Based on the modified Sixth International Workshop on Waldenström’s Macroglobulinemia (IWWM-6) response criteria (Treon 2015), the VGPR rate was 28% with BRUKINSA, compared to 19% with ibrutinib; based on the IWWM-6 response criteria (Owen et al 2013), the VGPR rate was 16% with BRUKINSA, compared to 7% with ibrutinib.
In the FDA-approved label, the major efficacy outcome is defined as response rate of partial response (PR) or better as assessed by IRC. Based on either IWWM-6 response criteria, the response rate was 78% with BRUKINSA (95% CI: 68, 85), compared to 78% with ibrutinib (95% CI: 68, 86), and the event-free duration of response (DoR) at 12 months was 94% with BRUKINSA (95% CI: 86, 98), compared to 88% with ibrutinib (95% CI: 77, 94).
The most common (≥20%) adverse reactions based on the pooled safety population of 779 patients were decreased neutrophil count, upper respiratory tract infection, decreased platelet count, rash, hemorrhage, musculoskeletal pain, decreased hemoglobin, bruising, diarrhea, pneumonia, and cough.
The recommended dose of BRUKINSA is either 160 mg twice daily or 320 mg once daily, taken orally with or without food. The dose may be adjusted for adverse reactions and reduced for patients with severe hepatic impairment and certain drug interactions.
BRUKINSA is a small molecule inhibitor of Bruton’s tyrosine kinase (BTK) discovered by BeiGene scientists that is currently being evaluated globally in a broad clinical program as a monotherapy and in combination with other therapies to treat various B-cell malignancies. Because new BTK is continuously synthesized, BRUKINSA was specifically designed to deliver complete and sustained inhibition of the BTK protein by optimizing bioavailability, half-life, and selectivity. With differentiated pharmacokinetics compared to other approved BTK inhibitors, BRUKINSA has been demonstrated to inhibit the proliferation of malignant B cells within a number of disease relevant tissues.
BRUKINSA is approved in the following indications and regions:
- For the treatment of mantle cell lymphoma (MCL) in adult patients who have received at least one prior therapy (United States, November 2019)*;
- For the treatment of MCL in adult patients who have received at least one prior therapy (China, June 2020)**;
- For the treatment of chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL) in adult patients who have received at least one prior therapy (China, June 2020)**;
- For the treatment of relapsed or refractory MCL (United Arab Emirates, February 2021);
- For the treatment of Waldenström’s macroglobulinemia (WM) in adult patients (Canada, March 2021);
- Registered and reimbursed for the treatment of MCL in patients who have received at least one prior therapy (Israel, April 2021);
- For the treatment of adult patients with WM who have received at least one prior therapy (China, June 2021)**;
- For the treatment of MCL in adult patients who have received at least one prior therapy (Canada, July 2021);
- For the treatment of adult patients with MCL who have received at least one previous therapy (Brazil, August 2021); and
- For the treatment of adult patients with WM (United States, August 2021).
To-date, more than 30 marketing authorization applications in multiple indications have been submitted in the United States, China, the European Union, and more than 20 other countries or regions.
* This indication was approved under accelerated approval based on overall response rate. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial.
** This indication was approved under conditional approval. Complete approval for this indication may be contingent upon results from ongoing randomized, controlled confirmatory clinical trials.
BeiGene is committed to advancing best and first-in-class clinical candidates internally or with like-minded partners to develop impactful and affordable medicines for patients across the globe. We have a growing R&D team of approximately 2,300 colleagues dedicated to advancing more than 90 clinical trials involving more than 13,000 patients and healthy volunteers. Our expansive portfolio is directed by a predominantly internalized clinical development team supporting trials in more than 40 countries. Hematology-oncology and solid tumor targeted therapies and immuno-oncology are key focus areas for the Company, with both mono- and combination therapies prioritized in our research and development. We currently market three medicines discovered and developed in our labs: BTK inhibitor BRUKINSA in the United States, China, Canada, and additional international markets; and non-FC-gamma receptor binding anti-PD-1 antibody tislelizumab and PARP inhibitor pamiparib in China.
BeiGene also partners with innovative companies who share our goal of developing therapies to address global health needs. We commercialize a range of oncology medicines in China licensed from Amgen and Bristol Myers Squibb. We also plan to address greater areas of unmet need globally through our collaborations including with Amgen, Bio-Thera, EUSA Pharma, Mirati Therapeutics, Seagen, and Zymeworks. BeiGene has also entered into a collaboration with Novartis granting Novartis rights to develop, manufacture, and commercialize tislelizumab in North America, Europe, and Japan.
BeiGene is a global, science-driven biotechnology company focused on developing innovative and affordable medicines to improve treatment outcomes and access for patients worldwide. With a broad portfolio of more than 40 clinical candidates, we are expediting development of our diverse pipeline of novel therapeutics through our own capabilities and collaborations. We are committed to radically improving access to medicines for two billion more people by 2030. BeiGene has a growing global team of over 7,000 colleagues across five continents. To learn more about BeiGene, please visit www.beigene.com and follow us on Twitter at @BeiGeneGlobal.