Leniolisib phosphate

Joenja® is the first and only medicine specifically for APDS to be reimbursed within the NHS Recommended for adult and pediatric patients 12 years of age and older with activated phosphoinositide 3-kinase delta (PI3Kδ) syndrome (APDS) April 23, 2025: Pharming Group N.V. (“Pharming” or “the Company”) (EURONEXT Amsterdam: PHARM/Nasdaq: PHAR) announces that the National Institute for Health and Care Excellence (NICE) has issued positive final guidance recommending Joenja® (leniolisib) for reimbursement and use within the National Health Service (NHS) in England and Wales for the treatment of activated phosphoinositide 3-kinase delta (PI3Kδ) syndrome (APDS) in adult and pediatric patients 12 years of age and older. The NICE recommendation is based on the totality of the data, including the Phase III clinical trial evaluating leniolisib, an oral selective PI3Kδ inhibitor, in patients with APDS, a rare and progressive primary immunodeficiency. In the primary analysis, treatment with leniolisib led to significant improvements in immune deficiency and immune dysregulation compared to placebo. The Phase III trial demonstrated an improvement in clinical outcomes, which was maintained during longer-term treatment within the open-label extension trial. Fabrice Chouraqui, Chief Executive Officer of Pharming, said: “This positive recommendation for Joenja® from NICE is a significant milestone for patients living with APDS in England and Wales. It underscores Pharming’s commitment to work closely with regulatory and reimbursement authorities, the medical immunology community, and patient associations to bring this first targeted treatment to patients who may benefit.” Professor Sinisa Savic, Professor of Clinical Immunology at St James’s University Hospital, said: “Data from clinical trials demonstrate that leniolisib provides real benefits for patients with APDS, a rare primary immunodeficiency. APDS is a complex and progressive condition that leads to immune dysregulation and recurrent infections, significantly impacting patients' quality of life. The recommendation by NICE, which allows this targeted therapy to be prescribed on the NHS, marks an important step forward in improving treatment options for individuals with this condition.” Dr Susan Walsh, Chief Executive Officer at Immunodeficiency UK, said: “This is a hugely welcomed decision that will make a massive difference to the lives of people with APDS, and their families, by potentially allowing them to have a better quality of life. With leniolisib, we now have a targeted treatment available that addresses the fundamental cause of the immune system problems experienced in APDS. This is a huge leap forward. We are grateful to Pharming for working with NICE to make this drug available via the NHS. Together, they have shown a real commitment to providing people affected by ultra-rare, immune system conditions the treatments they need.” The final NICE recommendation aligns with the U.K. Medicines and Healthcare products Regulatory Authority (MHRA) approval and falls under NICE’s Highly Specialised Technologies (HST) pathway, which evaluates treatments for very rare and severe diseases. Leniolisib is now available for use and funded in England through the Innovative Medicines Fund, ensuring immediate patient access. In Wales, leniolisib is expected to be funded within the next three months through the NHS in specialist centers. APDS is a rare primary immunodeficiency that was first characterized in 2013. APDS is caused by variants in either one of two identified genes known as PIK3CD or PIK3R1, which are vital to the development and function of immune cells in the body. Variants of these genes lead to hyperactivity of the PI3Kδ (phosphoinositide 3-kinase delta) pathway, which causes immune cells to fail to mature and function properly, leading to immunodeficiency and dysregulation1,2,3 APDS is characterized by a variety of symptoms, including severe, recurrent sinopulmonary infections, lymphoproliferation, autoimmunity, and enteropathy.4,5 Because these symptoms can be associated with a variety of conditions, including other primary immunodeficiencies, it has been reported that people with APDS are frequently misdiagnosed and suffer a median 7-year diagnostic delay.6 As APDS is a progressive disease, this delay may lead to an accumulation of damage over time, including permanent lung damage and lymphoma.4-7 A definitive diagnosis can be made through genetic testing. APDS affects approximately 1 to 2 people per million worldwide. Joenja® (leniolisib) is an oral small molecule phosphoinositide 3-kinase delta (PI3Kẟ) inhibitor approved in the U.S., U.K., Australia and Israel as the first and only targeted treatment of activated phosphoinositide 3-kinase delta (PI3Kδ) syndrome (APDS) in adult and pediatric patients 12 years of age and older. Joenja® inhibits the production of phosphatidylinositol-3-4-5-trisphosphate, which serves as an important cellular messenger and regulates a multitude of cell functions such as proliferation, differentiation, cytokine production, cell survival, angiogenesis, and metabolism. Results from a randomized, placebo-controlled Phase III clinical trial demonstrated statistically significant improvement in the coprimary endpoints, reflecting a favorable impact on the immune dysregulation and deficiency seen in these patients, and interim open label extension data has supported the safety and tolerability of long-term leniolisib administration.8,9 Leniolisib is currently under regulatory review in the European Economic Area, Canada and several other countries for APDS, with plans to pursue regulatory approval in Japan. Leniolisib is also being evaluated in two Phase III clinical trials in children with APDS and in two Phase II clinical trials in primary immunodeficiencies (PIDs) with immune dysregulation. The safety and efficacy of leniolisib has not been established for PIDs with immune dysregulation beyond APDS. Pharming Group N.V. (EURONEXT Amsterdam: PHARM/Nasdaq: PHAR) is a global biopharmaceutical company dedicated to transforming the lives of patients with rare, debilitating, and life-threatening diseases. We are commercializing and developing a portfolio of innovative medicines, including small molecules and biologics. Pharming is headquartered in Leiden, the Netherlands, and has employees around the globe who serve patients in over 30 markets in North America, Europe, the Middle East, Africa, and Asia-Pacific. References Lucas CL, et al. Nat Immunol. 2014;15(1):88-97. Elkaim E, et al. J Allergy Clin Immunol. 2016;138(1):210-218. Nunes-Santos C, Uzel G, Rosenzweig SD. J Allergy Clin Immunol. 2019;143(5):1676-1687. Coulter TI, et al. J Allergy Clin Immunol. 2017;139(2):597-606. Maccari ME, et al. Front Immunol. 2018;9:543. Jamee M, et al. Clin Rev Allergy Immunol. 2020 Dec;59(3):323-333. Condliffe AM, Chandra A. Front Immunol. 2018;9:338. Rao VK, et al Blood. 2023 Mar 2;141(9):971-983. Rao VK, et al. 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