Tirabrutinib Hydrochloride

– Regulatory submission is based on positive results from the Phase 2 PROSPECT Study — – FDA sets PDUFA Date of December 18, 2026 — OSAKA, Japan & WALTHAM, Mass.--(BUSINESS WIRE)--Deciphera Pharmaceuticals, a member of Ono Pharmaceutical Co., Ltd. (Headquarters: Osaka, Japan; President and COO: Toichi Takino; “Ono”), today announced that the U.S. Food and Drug Administration (FDA) has accepted for filing the New Drug Application (NDA) under the accelerated approval pathway for tirabrutinib, a highly selective irreversible, second generation Bruton tyrosine kinase inhibitor, for the treatment of relapsed or refractory primary central nervous system lymphoma (R/R PCNSL). The FDA has set an action date of December 18, 2026, under the Prescription Drug User Fee Act (PDUFA). “R/R PCNSL is a rare and aggressive form of non-Hodgkin lymphoma with particularly poor clinical outcomes. Patients often experience difficulty and delay in diagnosis, and once they are diagnosed, there is a high unmet need for a treatment with a favorable safety profile,” said Matthew L. Sherman, M.D., Chief Medical Officer of Deciphera. “The FDA’s acceptance of tirabrutinib’s NDA for filing is an exciting milestone as it brings us one step closer to our goal of providing patients with R/R PCNSL an important new treatment option.” “We are very pleased that the NDA for tirabrutinib has been accepted for filing,” said Toichi Takino, President and COO of Ono Pharmaceutical Co., Ltd. “This is an important milestone on the way to expanding our commercial pipeline and achieving our goal of becoming a global specialty pharma. Tirabrutinib’s potential to address unmet patient needs embodies our corporate philosophy and we will continue to focus on developing and delivering innovative medicines to benefit patients worldwide.” The NDA is supported by the positive results from the Phase 2 PROSPECT study, presented at the 2025 American Society for Clinical Oncology (ASCO) Annual Meeting, in which tirabrutinib demonstrated an overall response rate of 67%, a complete response rate of 44%, and a manageable safety profile. If approved, tirabrutinib will be the first BTK inhibitor therapy commercially available in the U.S. for the treatment of patients with R/R PCNSL, and the third commercial therapy for Ono group available in the U.S. The study is currently recruiting patients with R/R PCNSL in a global Phase 3 randomized trial, which will serve as a confirmatory study for this indication (ClinicalTrials.gov NCT07104032.) About Tirabrutinib Tirabrutinib, discovered and developed by Ono Pharmaceutical Co., Ltd., is a highly potent selective BTK inhibitor. Signaling through the B-cell receptor (BCR) regulates cellular proliferation and activation, and promotes survival, differentiation, and clonal expansion of B-cells. The BCR signaling pathway plays an important role in a number of B-cell malignancies. In Japan, tirabrutinib was approved in March 2020 for the treatment of R/R PCNSL and launched under the tradename of Velexbru ® in May 2020. It was subsequently approved for the treatment of Waldenstrom macroglobulinemia and lymphoplasmacytic lymphoma in August 2020. Tirabrutinib was approved for the treatment of R/R PCNSL in South Korea in November 2021 and in Taiwan in February 2022. About PCNSL PCNSL is a rare and aggressive extra-nodal non-Hodgkin lymphoma (NHL) that is confined to the brain parenchyma, spinal cord, eye, or leptomeninges without systemic involvement. The annual incidence rate of PCNSL is approximately five cases per 1,000,000 people in the U.S. The rate can further increase among immuno-compromised people aged 65 years and older. The signs and symptoms presented in patients with PCNSL vary depending on the neuroanatomical site of the lesion, and include cranial neuropathy, neuropsychiatric symptoms, symptoms associated with increased intracranial pressure, seizures, ocular symptoms, headache, dysmotility, cranial neuropathy, and radiculopathy. There is a high unmet need for a treatment with a favorable safety profile, and data guiding therapeutic approaches are very limited. Despite recent progress resulting in the improvement of clinical outcomes in newly diagnosed patients with PCNSL after an induction treatment, approximately 20 to 30 percent of patients are refractory to the initial treatment, and up to 60 percent of patients will eventually relapse. To learn more about R/R PCNSL, please visit navigatingpcnsl.com. About Deciphera Pharmaceuticals Inc. Deciphera, a member of Ono Pharmaceutical Co., Ltd., is a biopharmaceutical company focused on discovering, developing, and commercializing important new medicines and providing hope to people living with cancer, neurologic and autoimmune disease. Deciphera is leveraging its proprietary switch-control kinase inhibitor platform and deep expertise in kinase biology to develop a broad portfolio of innovative medicines. In addition to advancing multiple product candidates from Deciphera’s platform in clinical studies, QINLOCK ® (ripretinib) is Deciphera’s switch-control kinase inhibitor approved in many countries including the European Union and the United States for the treatment of adult patients with advanced gastrointestinal stromal tumor (GIST) who have received prior treatment with 3 or more kinase inhibitors, including imatinib. ROMVIMZA ® (vimseltinib) is a kinase inhibitor approved in the United States for adult patients with symptomatic tenosynovial giant cell tumor (TGCT) for which surgical resection will potentially cause worsening functional limitation or severe morbidity, and in the European Union for adult patients with TGCT associated with clinically relevant physical function deterioration and in whom surgical options have been exhausted or would induce unacceptable morbidity or disability. For more information, visit and follow us on LinkedIn and X (@Deciphera). About Ono Pharmaceutical Co., Ltd. Ono Pharmaceutical Co., Ltd. delivers innovative therapies for patients worldwide. Upholding its philosophy of “Dedicated to the Fight against Disease and Pain,” Ono targets areas with unmet medical needs including oncology, immunology, and neurology, and fosters partnerships with academic and biotech organizations to accelerate drug discovery. Through its affiliate, Deciphera Pharmaceuticals, Ono is accelerating clinical development and commercial operations in the US and Europe to drive global business expansion and further its commitment to patient care. For more information, please visit the company's website at . Cautionary Note Regarding Forward-Looking Statements In this press release, statements made with respect to current plans, estimates, strategies and beliefs, and other statements that are not historical facts are forward-looking statements about the future performance of the company. These statements are based on current assumptions and beliefs in light of the information currently available and involve known and unknown risks and uncertainties. A number of factors could cause actual results to differ materially from those discussed in the forward-looking statements. Such factors include, but are not limited to: (i) changes in the business environment in the pharmaceutical market and amendments to relevant laws and regulations, (ii) disruptions to product supply due to stagnation or delays in production caused by natural disasters, fires, etc., (iii) the possibility that sales activities for new and existing products may not achieve the expected results, (iv) the emergence of new side effects in post-marketing drugs, and (v) infringements of intellectual property rights by third parties. Information about pharmaceutical products included in this press release is not intended to constitute an advertisement or medical advice. Contacts Ono Pharmaceutical Co., Ltd. Media: media_inquiries@ono-pharma.com Deciphera Pharmaceuticals, Inc. Media: David Rosen Argot Partners david.rosen@argotpartners.com 646-461-6387

EBCI helps PCNSL patients understand the results from ONO PHARMA's recent phase II PROSPECT study, which tested the safety and efficacy of tirabrutinib. REDMOND, WA, UNITED STATES, December 23, 2025 / EINPresswire.com / -- ONO PHARMA recently announced positive results from the phase II PROSPECT study, which tested the safety and efficacy of tirabrutinib is in U.S. patients with relapsed (came back after treatment) or refractory (didn’t respond to treatment) Primary Central Nervous System Lymphoma (PCNSL). The End Brain Cancer Initiative (EBCI) has created a patient friendly resource for PCNSL patients, caregivers, and family members to easily understand these results, which can be found at https://endbraincancer.org/ono-pharma/ . Tirabrutinib is an oral (taken by mouth) targeted therapy. It works by blocking a protein called BTK (Bruton’s tyrosine kinase), which plays a role in cancer cell growth. While it’s already approved for PCNSL in Japan, Taiwan, and South Korea, it is still being studied in the U.S. Tirabrutinib may offer a new treatment option for patients with relapsed or refractory PCNSL. It showed promising results in shrinking tumors and had a manageable safety profile. EBCI anticipates a global confirmatory trial related to tirabrutinib’s benefit in the future. People who would like more information about this study or other treatment options should contact EBCI’s Clinical Research Coordinator and Patient Navigator, Shreya Prakash, at Shreya@EndBrainCancer.org or at 425-436-8688. About Ono Pharmaceutical Co., Ltd Ono Pharmaceutical Co., Ltd. delivers innovative therapies for patients worldwide. Upholding its philosophy of “Dedicated to the Fight against Disease and Pain,” Ono targets areas with unmet medical needs including oncology, immunology, and neurology, and fosters partnerships with academic and biotech organizations to accelerate drug discovery. Through its affiliate, Deciphera Pharmaceuticals, Ono is accelerating clinical development and commercial operations in the US and Europe to drive global business expansion and further its commitment to patient care. For more information, please visit the company's website at https://www.ono-pharma.com/en . About the End Brain Cancer Initiative To support/donate to the End Brain Cancer Initiative’s increased access and health delivery for patients, mission, services and programs, please visit EndBrainCancer.org The End Brain Cancer Initiative (EBCI) is a 501(c)3 non-profit patient advocacy organization focused on disease education, awareness, outreach, increasing patient access and improving Standard of Care. The End Brain Cancer Initiative, formerly known as the Chris Elliott Fund (CEF), is dedicated to ensuring that all patients diagnosed with brain cancer, a brain tumor, or metastatic disease to the brain have equal access to advanced diagnostics, treatments, specialists, and clinical trial participation. We believe that IMMEDIATE ACCESS to these options provides this patient community with the best HOPE for survival and sustained quality of life. We partner with industry, patients, researchers, advocacy groups, medical teams, hospital networks and others to educate patients and their caregivers so they can have empowered conversations with their medical teams. Learn more about the End Brain Cancer Initiative or how to sponsor this annual campaign at https://endbraincancer.org/ . Dellann Elliott Mydland, End Brain Cancer Initiative, 425-785-8489, Dellann@EndBrainCancer.org ### Dellann Elliott Mydland End Brain Cancer Initiative +1 4257858489 email us here Visit us on social media: LinkedIn Instagram Facebook YouTube X Legal Disclaimer: EIN Presswire provides this news content "as is" without warranty of any kind. We do not accept any responsibility or liability for the accuracy, content, images, videos, licenses, completeness, legality, or reliability of the information contained in this article. If you have any complaints or copyright issues related to this article, kindly contact the author above.