PDHK1

LEIDEN, the Netherlands, Aug. 1, 2022 /PRNewswire/ -- Pharming Group N.V. ("Pharming" or "the Company") (EURONEXT Amsterdam: PHARM) (Nasdaq: PHAR) announces that the European Medicines Agency's (EMA) Committee for Medicinal Products for Human Use (CHMP) has granted an accelerated assessment for the Marketing Authorisation Application (MAA) for leniolisib. Leniolisib has been studied for the treatment of activated PI3K delta syndrome (APDS), a rare primary immunodeficiency, in adults and adolescents age 12 or older in the European Economic Area (EEA). Pharming is on track and plans to submit its MAA for leniolisib to the EMA in October 2022. Accelerated assessment reduces the timeframe for the CHMP to review an MAA from 210 days to 150 days. The EMA will grant, upon request, accelerated assessment of an MAA if they decide the product is of major interest for public health and therapeutic innovation. The clinical development for leniolisib includes positive data from a Phase II/III study of the product, which met both its co-primary endpoints in the target patient population of evaluated reduction in lymph node size and correction of immunodeficiency. The primary efficacy results demonstrated clinical efficacy of leniolisib over placebo with a statistically significant reduction from baseline in the log10 transformed sum of product of diameters (SPD) in the index lymphadenopathy lesions (p=0.0012) and normalization of immune dysfunction, as evidenced by increased proportion of naïve B cells from baseline (p<0.0001). The shrinking of lymphadenopathy lesions and increased proportion of naïve B cells are important in patients as they indicate a reduction in APDS disease markers. In the study, leniolisib was generally well-tolerated, with the majority of reported adverse events in both treatment groups classified as mild. There were no adverse events that led to discontinuation of study treatment, there were no deaths, and the incidence of serious adverse events (SAEs) was lower in the leniolisib group than the placebo group. None of the SAEs were suspected to be related to study treatment. Anurag Relan, Chief Medical Officer of Pharming, commented: "The acceptance of an accelerated regulatory review for leniolisib underlines the high unmet need for patients with APDS, with the product potentially being the first approved treatment for this rare disease. This is an important milestone for the APDS community and for Pharming and is built on the successful Phase II/III data, which we first reported in February 2022. We remain focused on progressing leniolisib through the regulatory review process, with our MAA on track for submission in October of this year, as we seek to make this important new product available to immunologists, hematologists, and their patients in Europe." About Activated Phosphoinositide 3-Kinase δ Syndrome (APDS) APDS is a rare primary immunodeficiency that affects approximately one to two people per million. Also known as PASLI, it is caused by variants in either of two genes, PIK3CD or PIK3R1, that regulate maturation of white blood cells. Variants of these genes lead to hyperactivity of the PI3Kδ (phosphoinositide 3-kinase delta) pathway.1,2 Balanced signaling in the PI3Kδ pathway is essential for physiological immune function. When this pathway is hyperactive, immune cells fail to mature and function properly, leading to immunodeficiency and dysregulation.1,3 APDS is characterized by 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, 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 The only way to definitively diagnose this condition is through genetic testing. About Leniolisib Leniolisib is a small-molecule inhibitor of the delta isoform of the 110 kDa catalytic subunit of class IA PI3K with immunomodulating and potentially anti-neoplastic activities. Leniolisib inhibits the production of phosphatidylinositol-3-4-5-trisphosphate (PIP3). PIP3 serves as an important cellular messenger specifically activating AKT (via PDK1) and regulates a multitude of cell functions such as proliferation, differentiation, cytokine production, cell survival, angiogenesis, and metabolism. Unlike PI3Kα and PI3Kβ, which are ubiquitously expressed, PI3Kẟ and PI3Kγ are expressed primarily in cells of hematopoietic origin. The central role of PI3Kẟ in regulating numerous cellular functions of the adaptive immune system (B-cells and, to a lesser extent, T cells) as well as the innate immune system (neutrophils, mast cells, and macrophages) strongly indicates that PI3Kẟ is a valid and potentially effective therapeutic target for several immune diseases. To date, leniolisib has been well tolerated during both the Phase 1 first-in-human trial in healthy subjects and the Phase II/III registration-enabling study. About Pharming Group N.V. 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. Pharming is commercializing and developing an innovative portfolio of protein replacement therapies and precision medicines, including small molecules, biologics, and gene therapies that are in early to late-stage development. Pharming is headquartered in Leiden, 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. For more information, visit www.pharming.com.