On November 26, 2025 BeOne Medicines Ltd. (Nasdaq: ONC; HKEX: 06160; SSE: 688235), a global oncology company, reported that the U.S. Food and Drug Administration (FDA) has accepted and granted Priority Review to a New Drug Application (NDA) for sonrotoclax, a next-generation BCL2 inhibitor, for the treatment of adult patients with relapsed or refractory (R/R) mantle cell lymphoma (MCL), following treatment with a Bruton’s tyrosine kinase (BTK) inhibitor.
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"Sonrotoclax is advancing with remarkable speed, from Breakthrough Therapy Designation to Priority Review, all within a short window," said Lai Wang, Ph.D., Global Head of R&D at BeOne. "That pace reflects both the strength of the data and the urgency of the need for patients with R/R MCL. With rapid, deep, and durable responses and a manageable safety profile, sonrotoclax is emerging as a potential best-in-class BCL2 inhibitor, alongside our two other transformative hematology assets – BTK inhibitor BRUKINSA, and investigational BTK degrader BGB-16673."
The NDA is supported by data from the global, multicenter, single-arm, open-label, Phase 1/2 study, BGB-11417-201 (NCT05471843), which enrolled 125 adult patients with R/R MCL who received prior treatment with a BTK inhibitor. Sonrotoclax achieved its primary endpoint of overall response rate (ORR) as assessed by an independent review committee (IRC), demonstrating clinically meaningful responses in this heavily pretreated population. The study also showed promising results across several secondary efficacy endpoints, including complete response (CR) rate, duration of response (DOR), and progression-free survival (PFS). The treatment was well-tolerated, and the risks were manageable.
BeOne will present the full results for the first time at the 67th American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting and Exposition, December 6-9, in Orlando, Florida. (Oral Presentation: 663; December 7 from 5:00-5:15 PM EST).
Supporting efforts to rapidly advance global review and potential access, BeOne will participate in the FDA’s Project Orbis for sonrotoclax, an initiative that provides a framework for concurrent submission and review of oncology products among international partners. BeOne also intends to submit the Phase 1/2 data to other global regulatory bodies for the potential approval of sonrotoclax in R/R MCL, including the European Medicines Agency.
New drug applications for sonrotoclax for the treatment of R/R MCL and R/R chronic lymphocytic leukemia / small lymphocytic lymphoma (CLL/SLL) have also been accepted and are under review by the Center for Drug Evaluation (CDE) of the China National Medical Products Administration (NMPA) for potential accelerated approval.
About Mantle Cell Lymphoma
Mantle cell lymphoma (MCL) is a rare subtype of aggressive non-Hodgkin lymphoma (NHL)1 that originates in B-cells located in the mantle zone of the lymph nodes. MCL accounts for approximately 5% of all NHL cases globally2, affecting an estimated 28,000 people3. MCL is often diagnosed at advanced stages4 and nearly all MCL patients will eventually develop refractory or relapsed (R/R) disease.5 The five-year survival rate for MCL is approximately 50%, reflecting the urgent need for new therapeutic options.6
About Sonrotoclax (BGB-11417)
Sonrotoclax is a next-generation and potentially best-in-class investigational B-cell lymphoma 2 (BCL2) inhibitor with a unique pharmacokinetic and pharmacodynamic profile. Laboratory studies during early drug development have shown that sonrotoclax is a highly potent and specific BCL2 inhibitor with a short half-life and no drug accumulation. Sonrotoclax has shown promising clinical activity across a range of B-cell malignancies and is in development as a monotherapy and in combination with other therapeutics, including BRUKINSA. Notably, in early clinical trials, sonrotoclax plus BRUKINSA has demonstrated rapid and unprecedented rates of undetectable minimal residual disease (uMRD) in treatment-naïve patients with CLL. To date, more than 2,200 patients have been enrolled across the broad sonrotoclax global development program.
The U.S. Food and Drug Administration (FDA) granted Breakthrough Therapy Designation (BTD) for sonrotoclax for the treatment of adult patients with relapsed or refractory (R/R) mantle cell lymphoma (MCL). In addition, the FDA has granted sonrotoclax Fast Track Designation for MCL and Waldenström macroglobulinemia, as well as Orphan Drug Designation for the treatment of adult patients with MCL, WM, multiple myeloma, acute myeloid leukemia, and myelodysplastic syndrome.
(Press release, BeOne Medicines, NOV 26, 2025, View Source [SID1234660978])