Pidnarulex

TAIPEI and SAN DIEGO, July 15, 2025 /PRNewswire/ -- Senhwa Biosciences, Inc. (TPEx: 6492), a new drug development company focusing on first-in-class therapeutics for oncology, rare diseases, and infectious diseases, today announced that its new drug Pidnarulex (CX-5461) has been selected by the U.S. National Cancer Institute (NCI) as part of a five-year cancer research program. The first patient in the monotherapy clinical trial for advanced solid tumors has been successfully enrolled at the NIH Clinical Center in Bethesda, Maryland, USA. The NCI will fund the full cost of the clinical trial—estimated at approximately USD 4.8 million. In addition to this initial monotherapy trial, three other cutting-edge clinical studies led and sponsored by NCI are in progress. These include combination therapies with immunotherapy, antibody-drug conjugates (ADCs), and a monotherapy study targeting MYC-driven lymphomas. IND submissions and patient enrollment for these additional studies are expected to begin shortly. Senhwa's broad collaboration with the NCI not only highlights the innovative potential of CX-5461 as a first-in-class molecule targeting novel cancer mechanisms, but also reflects international recognition of Taiwan's biotechnology achievements. This strengthens the company's visibility and strategic position on the global stage in oncology drug development. Trial Objectives and Research Focus The first trial in the NCI program will investigate CX-5461 as a single agent in patients with and without homologous recombination deficiency (HRD) gene mutations, evaluating its ability to induce the Rad51 response. The study also aims to identify additional biomarkers associated with synthetic lethality to help define patient populations more likely to respond to treatment and potentially expand its clinical indications. The trial plans to enroll 40 patients, with allocated resources including clinical site operations, pharmacokinetic (PK) and biomarker analyses, as well as execution costs such as regulatory compliance, data management, and electronic platform infrastructure. With full financial support from NCI, the trial is expected to save the company an estimated USD 4.8 million in clinical development costs, significantly reducing the R&D burden and accelerating the advancement of CX-5461. CX-5461 – A First-in-Class Investigational Drug CX-5461 is a first-in-class small molecule drug with a unique mechanism of action. It acts by selectively targeting and stabilizing G-quadruplexes (G4s), preventing their unwinding and triggering replication-dependent DNA damage, ultimately resulting in cancer cell apoptosis. The frequent presence of G4 structures in tumors, especially in transcriptionally active genes, implies their potential functional involvement in the development of cancer. By targeting G4s and triggering DNA damage in cancer cells, Pidnarulex (CX-5461) emerges as a potential therapeutic candidate with significant promise across multiple cancer indications. Growing Cancer Drug Market and the Need for Combination Therapies With global cancer incidence on the rise, particularly among younger populations, the market for oncology drugs continues to expand. Demand for immunotherapies—which activate the human immune system to fight cancer—remains strong. According to the latest report by Grand View Research, Inc., the global cancer immunotherapy market is projected to reach USD 224.3 billion by 2030, with a compound annual growth rate (CAGR) of 8.3% from 2024 to 2030. However, current immunotherapies benefit only around 20–25% of patients, creating an urgent need for combination therapies that modulate multiple pathways within the tumor microenvironment to enhance treatment efficacy. Senhwa is highly optimistic about its future clinical plans under the leadership of the NCI, particularly the combination studies involving CX-5461 and immunotherapies. These trials may help overcome the limitations of current immunotherapies and expand their benefit to a broader cancer patient population. SOURCE Senhwa Biosciences, Inc. WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

TAIPEI and SAN DIEGO, June 25, 2025 /PRNewswire/ -- Senhwa Biosciences, Inc. (TPEx: 6492), a clinical-stage biopharmaceutical company, held its 2025 Annual Shareholders' Meeting today, chaired by Chairman Mr. Benny T. Hu. The company delivered updates on its ongoing drug development programs, outlining four key strategic milestones poised to drive its transformative growth: Launch of a new HIV "Functional Cure" strategic program Advancement of partnership discussions with leading global immunotherapy companies Active negotiations of multiple licensing opportunities Dual-engine therapeutic breakthroughs from CX-4945 and CX-5461 Silmitasertib (CX-4945): Unlocking New Hope for HIV Cure In March, Senhwa made the strategic decision to discontinue its Community-Acquired Pneumonia clinical trial, prompting investor concern. This shift, based on compelling interim findings, redirected focus to the promising potential of CX-4945 in HIV treatment. Dr. Jason Huang, Acting CEO and Chief Medical Officer, revealed that in HIV-positive participants within the Community-Acquired Pneumonia study, a significant and rapid increase in a key immune biomarker was observed, potentially reflecting a marked restoration of previously impaired immune function. This finding suggests that CX-4945 may represent a novel therapeutic option and a new opportunity for those affected by HIV. At the same time, to address gastrointestinal side effects observed in previous studies, Senhwa is in the final stages of developing a new formulation of CX–4945. The updated formulation is designed to significantly reduce GI discomfort while also extending the compound's intellectual property protection for an additional 20 years, supporting both patient tolerability and long-term commercial value. The company is currently consulting with the U.S. FDA on its clinical development pathway and is planning a small-scale pilot study in Taiwan. The trial will focus on evaluating the combined effects of CX–4945 on latent HIV reactivation and immune enhancement. Given the lifelong adherence required by current HIV therapies, a successful approach incorporating CX-4945 could present a scalable and transformative path to functional cure for tens of millions of HIV patients worldwide. CX-4945 for Basal Cell Carcinoma (BCC): Strong Clinical Efficacy in Refractory Patients Recent trial results from CX-4945 in patients with advanced BCC who had failed standard and immunotherapy treatments showed highly encouraging outcomes. Among 25 evaluable patients: 3 achieved Partial Response (PR) and 10 achieved Stable Disease (SD). Two patients had Progression-Free Survival (PFS) exceeding 21 months. Senhwa is currently in active discussions with several potential collaborators. Pidnarulex (CX-5461): Broad-Spectrum Oncology Innovation As another globally first-in-class asset, CX-5461 is advancing through multiple clinical programs, including the NIH 5-Year Anti-Cancer Initiative and a trial in North America targeting solid tumors with specific genetic deficiencies (BRCA1/2, PALB2). In addition to a monotherapy study in late-stage solid tumors (HRD/non-HRD), the NIH NExT Program is preparing three other protocols: CX-5461 with immunotherapy for colorectal cancer, CX-5461 with ADC, now a major focus in oncology innovation, for breast cancer and CX-5461 monotherapy for MYC-driven lymphomas. All three projects are underway, with IND submissions and patient enrollment expected soon. Among North American patients in the ongoing trial, several have achieved PR or SD despite failing previous treatments. Most notably, a patient with pancreatic cancer, considered one of the most lethal and treatment-resistant malignancies, has survived over 22 months on CX-5461 while maintaining quality of life. This represents an extraordinary outcome in clinical oncology. Senhwa aims to complete enrollment and data analysis for this trial in 2026 and is concurrently evaluating out-licensing or joint development options. CX-5461 + Immunotherapy: A Dual-Engine Powerhouse CX-5461 uniquely reprograms the tumor microenvironment (TME) by activating tumor-infiltrating lymphocytes (TILs) and dendritic cells (DCs), converting "cold" tumors into "hot" tumors. This transformation significantly enhances the responses to immune checkpoint inhibitors (e.g., PD-1/PD-L1), which currently benefit only 20–30% of patients. Senhwa is planning clinical programs combining CX-5461 with immunotherapy across multiple cancers, including pancreatic cancer, head and neck cancer, and melanoma. The company is in strategic discussions with global immuno-oncology companies and aims to launch these studies in 2026, targeting a share of the multibillion-dollar global immunotherapy market. A Year of Execution and Transformative Progress Ahead From HIV to pancreatic cancer and beyond, Senhwa's multi-front strategy signals its commitment to addressing unmet medical needs. The management team expressed sincere gratitude to shareholders for their patience and continued trust, and reaffirmed its commitment to delivering on key milestones in the shortest possible time to realize the value of shareholder support. Senhwa is positioning itself as a global leader in next-generation therapeutics and a comprehensive solutions provider for unmet medical needs. SOURCE Senhwa Biosciences, Inc. WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED