NHE3

WALTHAM, Mass., April 24, 2025 (GLOBE NEWSWIRE) -- Ardelyx, Inc. (Nasdaq: ARDX), a biopharmaceutical company founded with a mission to discover, develop and commercialize innovative, first-in-class medicines that meet significant unmet medical needs, today announced that the company will present data supporting the company’s first-in-class retainagogue, IBSRELA® (tenapanor), as well as results from the IBS in America 2024 supplemental survey, at the upcoming Digestive Disease Week Conference (DDW), to be held May 3-6, 2025, in San Diego. IBSRELA is approved by the U.S. Food and Drug Administration to treat irritable bowel syndrome with constipation (IBS-C) in adults. Title: Safety and Tolerability of Tenapanor in Pediatric Patients With Irritable Bowel Syndrome With Constipation: An Analysis of Blinded Safety Data from a Phase 3 Study and its Open-Label ExtensionAuthors: Thomas Wallach, Mihaela Ringheanu, Ana Roig Cantisano, Yang Yang, Karishma Raju, Jocelyn Tabora, Susan EdelsteinPoster Number: Sa1643Date/Time: May 3, 2025, from 12:30 PM to 1:30 PM PDT Title: Neither Tenapanor nor its Major Metabolite Were Detected in the Breast Milk of Healthy Lactating Females After 4 Days of Dosing: A Phase 1, Open-Label, Pharmacokinetic StudyAuthors: Darren Brenner, Karishma Raju, Kenji Kozuka,Yang Yang, Suling Zhao, Susan EdelsteinPoster Number: Sa1673Date/Time: May 3, 2025, from 12:30 PM to 1:30 PM PDT Title: Patient-Reported IBS-C Symptom Severity Correlates Positively With Financial Burden: Results From the IBS in America 2024 Real-World SurveyAuthors: Eric Shah, Luisa Scott, Johannah Ruddy, Elizabeth Stremke, Laura Williams, Baharak MoshireePoster Number: Mo1257Date/Time: May 5, 2025, from 12:30 PM to 1:30 PM PDT In addition to the poster presentations during DDW, Ardelyx is sponsoring a Product Theater titled: “Integrating a Different Mechanism of Action, a different Class of Therapy, Into the Treatment of Adults with IBS-C,” on May 4, 2025, from 12:50-1:35 PM PDT, where Satish Rao, MD, and Christina Hanson, NP, will share important clinical considerations in managing adult patients with IBS-C. The presentation will include interactive patient case studies, along with efficacy and safety data from two Phase 3 clinical trials. About IBSRELA® (tenapanor)IBSRELA (tenapanor) is a locally acting inhibitor of the sodium/hydrogen exchanger 3 (NHE3), an antiporter expressed on the apical surface of the small intestine and colon primarily responsible for the absorption of dietary sodium. By inhibiting NHE3 on the apical surface of the enterocytes, tenapanor reduces absorption of sodium from the small intestine and colon, thus retaining luminal water content, which accelerates intestinal transit time and results in a softer stool consistency. IBSRELA has also been shown to reduce abdominal pain by decreasing visceral hypersensitivity and by decreasing intestinal permeability in animal models. In a rat model of colonic hypersensitivity, tenapanor reduced visceral hyperalgesia and normalized colonic sensory neuronal excitability. About Irritable Bowel Syndrome with Constipation (IBS-C)Irritable bowel syndrome with constipation (IBS-C) is a gastrointestinal disorder characterized by both abdominal pain and altered bowel movements, estimated to affect 12 million people in the U.S. IBS-C is associated with significantly impaired quality of life, reduced productivity, and substantial economic burden. IMPORTANT SAFETY INFORMATION WARNING: RISK OF SERIOUS DEHYDRATION IN PEDIATRIC PATIENTSIBSRELA is contraindicated in patients less than 6 years of age; in nonclinical studies in young juvenile rats administration of tenapanor caused deaths presumed to be due to dehydration. Avoid use of IBSRELA in patients 6 years to less than 12 years of age. The safety and effectiveness of IBSRELA have not been established in patients less than 18 years of age. CONTRAINDICATIONSIBSRELA is contraindicated in: patients less than 6 years of age due to the risk of serious dehydrationpatients with known or suspected mechanical gastrointestinal obstruction WARNINGS AND PRECAUTIONSRisk of Serious Dehydration in Pediatric Patients IBSRELA is contraindicated in patients below 6 years of age. The safety and effectiveness of IBSRELA in patients less than 18 years of age have not been established. In young juvenile rats (less than 1 week old; approximate human age equivalent of less than 2 years of age), decreased body weight and deaths occurred, presumed to be due to dehydration, following oral administration of tenapanor. There are no data available in older juvenile rats (human age equivalent 2 years to less than 12 years).Avoid the use of IBSRELA in patients 6 years to less than 12 years of age. Although there are no data in older juvenile rats, given the deaths in younger rats and the lack of clinical safety and efficacy data in pediatric patients, avoid the use of IBSRELA in patients 6 years to less than 12 years of age. Diarrhea Diarrhea was the most common adverse reaction in two randomized, double-blind, placebo-controlled trials of IBS-C. Severe diarrhea was reported in 2.5% of IBSRELA-treated patients. If severe diarrhea occurs, suspend dosing and rehydrate patient. MOST COMMON ADVERSE REACTIONS The most common adverse reactions in IBSRELA-treated patients (incidence ≥2% and greater than placebo) were: diarrhea (16% vs 4% placebo), abdominal distension (3% vs <1%), flatulence (3% vs 1%) and dizziness (2% vs <1%). INDICATION IBSRELA (tenapanor) is indicated for the treatment of Irritable Bowel Syndrome with Constipation (IBS-C) in adults. Please see full Prescribing Information, including Boxed Warning, for additional risk information. About ArdelyxArdelyx was founded with a mission to discover, develop and commercialize innovative, first-in-class medicines that meet significant unmet medical needs. Ardelyx has two commercial products approved in the United States, IBSRELA® (tenapanor) and XPHOZAH® (tenapanor). Ardelyx has agreements for the development and commercialization of tenapanor outside of the U.S. Kyowa Kirin commercializes PHOZEVEL® (tenapanor) for hyperphosphatemia in Japan. A New Drug Application for tenapanor for hyperphosphatemia has been approved in China with Fosun Pharma. Knight Therapeutics commercializes IBSRELA in Canada. For more information, please visit https://ardelyx.com/ and connect with us on X (formerly known as Twitter), LinkedIn and Facebook. Investor and Media Contacts: Lindsey Manuellmanuel@ardelyx.com

Bringing New Hope to Chinese Dialysis Patients with Hyperphosphatemia SHANGHAI, Feb. 26, 2025 /PRNewswire/ -- Shanghai Fosun Pharmaceutical (Group) Co., Ltd. (Fosun Pharma; stock code: 600196.SH, 02196.HK) announced that its holding subsidiary, Shanghai Fosun Pharmaceutical Industrial Development Co., Ltd. ("Fosun Pharma Industrial"), has received approval from the National Medical Products Administration ("NMPA") for the New Drug Application ("NDA") for Tenapanor Hydrochloride Tablets (Chinese trade name: Wan Ti Le, the "New Drug"), an innovative phosphate absorption inhibitor with a novel mechanism, with the indication being for the control of serum phosphorus levels in dialysis patients with chronic kidney disease (CKD) who have an inadequate response or are intolerant to phosphorus binders. As the world's first and currently only approved phosphate absorption inhibitor, Tenapanor Hydrochloride Tablets has been officially approved in China, ushering in a new era of multi-mechanism synergistic phosphate control and offering new hope for patients with hyperphosphatemia on hemodialysis in China. "The approval of tenapanor for the treatment of adult dialysis patients with chronic kidney disease in China market brings new hope for dialysis patients with hyperphosphatemia in China," said Xingli Wang, Executive President, CEO of Global R&D Center of Fosun Pharma, "Fosun Pharma is committed to addressing unmet clinical needs by focusing on innovative R&D in core therapeutic areas such as oncology, immunology, and chronic diseases. We look forward to our continued collaboration with Ardelyx as we advance the development and commercialization of more innovative therapies, bringing greater benefits to patients. "The approval of tenapanor for hyperphosphatemia in China marks another important milestone in Ardelyx's commitment to bringing our novel therapies to patients with unmet medical needs globally," said Mike Raab, president and chief executive officer of Ardelyx. "I thank our partners at Fosun Pharma for their continued efforts to support this approval. Fosun Pharma is a leading healthcare company in China with a strong focus and track record of successfully marketing cardiorenal medicines in China and shares our commitment to improving the lives of patients. We look forward to further collaboration as Fosun Pharma brings this treatment to patients." Tenapanor Hydrochloride Tablets is a First-in-class oral intestinal sodium/hydrogen exchanger 3 (NHE3) inhibitor licensed by Fosun Pharma Industrial from Ardelyx, Inc. In October 2023, Tenapanor was approved by the U.S. Food and Drug Administration to reduce serum phosphorus in adults with CKD on dialysis as add-on therapy in patients who have an inadequate response to phosphate binders or who are intolerant of any dose of phosphate binder therapy. Tenapanor is also approved for the treatment of Irritable Bowel syndrome with Constipation in the U.S. and Hong Kong SAR. For many years, the rate of achieving target serum phosphate levels in hemodialysis patients in China has been lower than the international standards[1]. Despite existing pharmacotherapy, a significant proportion of patients fail to meet the target phosphate levels. Data indicate that by the end of 2023, there were more than one million patients on maintenance hemodialysis in China, with an annual growth rate of approximately 10%. Among these patients, 76% have hyperphosphatemia, and the rate of achieving target phosphate levels is only 39%[2] (according to China's hemodialysis quality control standards: serum phosphate 1.13–1.78 mmol/L). If the target range for serum phosphate is set at 0.87–1.45 mmol/L, as stipulated by the Chinese guidelines for the diagnosis and treatment of Chronic Kidney Disease Mineral and Bone Disorder (CKD-MBD), the achievement rate decreases to 26.7%[3]. Given the current situation where the blood phosphorus levels of dialysis patients are poorly controlled, the National Health Commission of China listed "improving phosphate control rates in hemodialysis patients" as a key quality control improvement target for 2024. Tenapanor is a local inhibitor that targets the NA(+)/H(+) exchanger-3 (NHE3), a reverse transporter expressed on the apical surface of the epithelium in the small intestine and colon. By inhibiting NHE3, the drug tightens intercellular junctions, thereby reducing the permeability of the paracellular pathway to phosphate, which is the primary route for intestinal phosphate absorption. This action leads to a decrease in phosphate absorption and, consequently, a reduction in serum phosphorus levels[4]. Owing to its novel mechanism of action, tenapanor can be used in combination with phosphate binders to further significantly reduce serum phosphate levels and improve the rate of achieving target levels. In a randomized, double-blind, placebo-controlled study[5], 164 hemodialysis patients with hyperphosphatemia were enrolled. After 8 weeks of treatment with tenapanor in combination with phosphate binders, serum phosphate levels decreased by an additional 0.57 mmol/L compared to phosphate binders alone. In another multicenter, randomized, open-label study[6], 303 hemodialysis patients who were not achieving target phosphate levels with phosphate binders were switched to a tenapanor-based regimen (tenapanor 30 mg BID, with phosphate binders added or adjusted if necessary). After 10 weeks of treatment, the rate of achieving target phosphate levels increased by 34.4% to 38.2%. A tenapanor can lower levels of parathyroid hormone (PTH)[7] and fibroblast growth factor 23 (FGF23)[8], thereby aiding in the comprehensive achievement of key therapeutic targets in the management of chronic kidney disease–mineral and bone disorder (CKD-MBD). SOURCE Fosun Pharma WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

In 2024, China approved several new drugs, and more blockbuster drugs are expected to be launched in 2025, covering oncology, autoimmune diseases, rare diseases, and other therapeutic areas.   Drug Name Mechanism of Action Indications Development Institutions Evantuzumab c-Met/EGFR bispecific antibody Non-small cell lung cancer Johnson & Johnson; Genmab Taqetuzumab CD3/GPRC5D bispecific antibody Multiple myeloma Johnson & Johnson; Genmab Zenidatuzumab Anti-HER2 bispecific antibody Biliary tract cancer Zymeworks; Jazz Pharmaceuticals; BeiGene Inalises PI3Kα inhibitor HR-positive breast cancer Roche; Chugai Pharmaceutical Asunitinib STAMP allosteric inhibitor Speculated use for chronic myeloid leukemia treatment Novartis Tazemetostat EZH2 inhibitor Follicular lymphoma Epizyme; Huadong Medicine; Eisai Relatuzumab-alpha PDL1/TGF-β bispecific antibody Stomach cancer; gastroesophageal junction cancer Hengrui Medicine; Dong-A Pharma Vabysmo EGFR antibody-drug conjugate Nasopharyngeal cancer Lepu Biopharma Tenapanor NHE3 inhibitor Chronic kidney disease hyperphosphatemia Ardelyx; Kyowa Kirin; Fosun Pharma; AstraZeneca Mersutide OXM analog; GLP-1R/GCGR agonist Obesity Eli Lilly; Innovent Biologics Vusirumab IL-1β monoclonal antibody Gouty arthritis Junshi Biosciences Romosozumab SOST monoclonal antibody Osteoporosis Astellas; Amgen; UCB Teplizumab CD3 monoclonal antibody Type 1 diabetes Ligand Pharmaceuticals; Johnson & Johnson; Sanofi Solrepinib Syk inhibitor Immune thrombocytopenic purpura Huadong Medicine BBM-H901 Factor IX gene therapy Hemophilia B Gene Therapy Fitusiran RNAi therapy Hemophilia A; Hemophilia B Sanofi; Alnylam Andexanet alfa Recombinant factor Xa Factor Xa inhibitor antidote Portola Pharmaceuticals Lisocabtagene maraleucel IL-23p19 monoclonal antibody Crohn's disease Boehringer Ingelheim; AbbVie Lemborexant & Daridorexant OX1R antagonist; OX2R antagonist Insomnia Eisai & Idorsia; Sihuan Pharmaceutical; Nxera Pharma Highlights of new drug approvals in 2024 include: 1. Oncology: The world’s first antibody-drug conjugate (ADC) targeting folate receptor alpha (FRα) for ovarian cancer: Mirvetuximab soravtansine. PD-1/VEGF bispecific antibody envafolimab and Nectin-4 ADC enfortumab vedotin. 2. Autoimmune diseases: IL-17A/F monoclonal antibody bimekizumab for ankylosing spondylitis. 3. Rare diseases: Novartis’ complement factor B inhibitor for paroxysmal nocturnal hemoglobinuria (PNH).   Blockbuster drugs expected to be approved in 2025 include: Oncology: Amivantamab (Q1) The world’s first c-Met/EGFR bispecific antibody. Highlight: Phase III study showed significant extension of median progression-free survival (mPFS). Talquetamab (Q2) A CD3/GPRC5D bispecific antibody and the world’s first drug targeting GPRC5D. Clinical results: Objective response rate (ORR) in Chinese patients was 69.0%-73.6%. Zanidatamab (Q2) A HER2-targeting bispecific antibody based on Azymetric™ technology. Indication: HER2-positive biliary tract cancer (BTC) with an ORR of up to 52%. Inavolisib (Q3) Roche’s highly selective PI3Kα inhibitor for PIK3CA-mutated breast cancer. Asciminib (Q3) Novartis’ Bcr-Abl allosteric inhibitor for Philadelphia chromosome-positive chronic myeloid leukemia (CML). SHR-1701 (Q4) A PD-L1/TGF-βRII bifunctional fusion protein for first-line treatment of gastric cancer. Phase III study demonstrated significant extension in median overall survival. MRG003 (Q4) China’s first EGFR-targeting ADC with remarkable efficacy in nasopharyngeal carcinoma. Endocrinology and Metabolism: Tenapanor (Q1) The world’s only approved NHE3 inhibitor for controlling hyperphosphatemia in chronic kidney disease patients. Trend Analysis: Continued Innovation in Oncology: The emergence of multiple bispecific antibodies and ADC drugs is making targets and treatment options more precise and diverse. Breakthroughs in Autoimmune and Rare Diseases: New biologics are gradually addressing drug resistance and limited treatment options in previous therapies. Emergence of Domestic Innovative Drugs: Examples include SHR-1701 and MRG003, highlighting the growing research and development capabilities of Chinese pharmaceutical companies.   The sequential launch of these drugs will provide new therapeutic options for Chinese patients and enhance China’s position in the global pharmaceutical market.