Primary Biliary Cholangitis

Abstracts include a presidential plenary-selected Phase 2 study evaluating the combination of obeticholic acid and bezafibrate in PBC, along with 10 other abstractsMORRISTOWN, N.J., April 30, 2025 (GLOBE NEWSWIRE) -- Intercept Pharmaceuticals, Inc. (Intercept), part of the Alfasigma Group, today announced 11 submitted abstracts have been accepted for presentation at Digestive Disease Week 2025, including oral presentations of data from a Phase 2 study evaluating the combination of obeticholic acid and bezafibrate in PBC, and investigational data for INT-787, a next-generation FXR agonist. The conference will be held from May 3-6 in San Diego. The abstracts showcase the Company’s breadth of research in the gastrointestinal (GI) and hepatology therapeutic areas. The data encompass multiple areas of high unmet need, including primary biliary cholangitis (PBC); primary sclerosing cholangitis (PSC); severe alcohol-associated hepatitis (sAH), a liver disease increasing in prevalence, especially among women; and chronic intestinal pseudo-obstruction (CIPO), a rare condition characterized by severe impairment of intestinal activity. “We look forward to sharing details of our clinical-development program progress with the scientific community, including our ongoing Phase 2 study of a potential first-in-class treatment for severe alcohol-associated hepatitis,” said Sangeeta Sawhney, M.D., Senior Vice President, Global Head, GI Therapeutic Area, Alfasigma. “We're also going to share the first six-year data for a second-line therapy for PBC, which gives insights into long-term safety and effectiveness." Presentations by Intercept and Alfasigma at DDW 2025: Oral Presentations “COMBINED EFFECT OF OBETICHOLIC ACID AND BEZAFIBRATE IN PATIENTS WITH PRIMARY BILIARY CHOLANGITIS AND INADEQUATE RESPONSE OR INTOLERANCE TO URSODEOXYCHOLIC ACID: 6-MONTH RESULTS FROM A PHASE 2 TRIAL” (Presentation #4)Session: AASLD Presidential PlenarySaturday, May 3, 9:15 AM ETChristophe Corpechot, Vaclav Hejda, Heng Zou, Antonio Civitarese, Alejandra Villamil, Frederik Nevens “FXR AGONIST INT-787 INHIBITS INFLAMMATION, FIBROSIS, SENESCENCE, AND APOPTOSIS ARREST IN HUMAN CHOLANGIOCYTES MODELING PSC” (Presentation #879)Session: Cutting-Edge Insights into PSC: From Mechanisms to TherapiesMonday, May 5, 4:45 PM ETFrancesca De Franco, Daniela Passeri, Sanjay Kansra, Luciano Adorini, Mary Erickson, Roberto Pellicciari Poster Presentations “OBETICHOLIC ACID NORMALIZES INFLAMMATORY BIOMARKERS IN PATIENTS WITH PRIMARY BILIARY CHOLANGITIS” (Poster #Sa1500)Session: Liver Inflammation and ImmunobiologySaturday, May 3, 12:30 PM ETDavid E. Jones, Christopher L. Bowlus, Arash Thranian, Mary Erickson, Jing Li, Christopher Gasink, Robert G. Gish “US POPULATION–BASED EPIDEMIOLOGY OF PRIMARY BILIARY CHOLANGITIS: EXAMINATION OF PATIENT CHARACTERISTICS AND INCIDENCE OF HEPATIC OUTCOMES IN A US HEALTHCARE CLAIMS DATABASE” (Poster #Su1675)Session: Health Disparities in Patients with Liver DiseaseSunday, May 4, 12:30 PM ETAparna Goel, Bridget L. Balkaran, Chris White, Radhika Nair, Anne Chiplin, Jing Li, Jayashri Desai, Joanna P. MacEwan “REAL-WORLD ADHERENCE TO OBETICHOLIC ACID THERAPY FOR PRIMARY BILIARY CHOLANGITIS” (Poster #Mo1626)Session: Human and Experimental Cholestatic and Autoimmune Liver DiseasesMonday, May 5, 12:30 PM ETRobert G. Gish, Joanna P. MacEwan, Jennifer Hernandez, Radhika Nair, Jing Li, Darren Wheeler, Anh Singhania, Leona Bessonova “PATIENTS WITHOUT BASELINE PRURITUS WHO INITIATE TREATMENT WITH OCA HAVE SIMILAR RISK OF DEVELOPING TREATMENT-EMERGENT PRURITUS AS THOSE WHO ARE NOT ON TREATMENT WITH OCA” (Poster #Mo1618)Session: Human and Experimental Cholestatic and Autoimmune Liver DiseasesMonday, May 5, 12:30 PM ETDavid Jones, Aparna Goel, Ann Moore, Jing Li, Darren Wheeler, Christopher White, and David W. Victor III “STABILIZATION OF ENHANCED LIVER FIBROSIS AND LIVER STIFFNESS MEASURES IN THE OPEN-LABEL EXTENSION OF THE PHASE 3 POISE TRIAL OF OBETICHOLIC ACID FOR THE TREATMENT OF PRIMARY BILIARY CHOLANGITIS” (Poster #Mo1667)Session: Non-Invasive Assessment of Liver DiseaseMonday, May 5, 12:30 PM ET Robert G. Gish, Darren Wheeler, Jing Li, Christopher Gasink, Alan Bonder “FARNESOID X RECEPTOR AGONIST INT-787 PROTECTS HUMAN LIVER ORGANOIDS FROM ALCOHOL-INDUCED INJURY” (Poster #Su1618)Session: Alcoholic-associated Liver Disease Including Alcohol-associated HepatitisSunday, May 4, 12:30 PM ETFrancesca De Franco, Daniela Passeri, Sanjay Kansra, Luciano Adorini, Mary Erickson, Roberto Pellicciari “FARNESOID X RECEPTOR AGONIST INT-787 EXHIBITS HIGH INTESTINAL LOCALIZATION” (Poster #Su1635)Session: Alcoholic-associated Liver Disease Including Alcohol-associated HepatitisSunday, May 4, 12:30 PM ETJennifer Burkey, Sanjay Kansra, Antonio Macchiarulo, Kenneth Brouwer, Luciano Adorini, Mary Erickson, Roberto Pellicciari “PHARMACOKINETIC AND PHARMACODYNAMIC INTERACTION OF OBETICHOLIC ACID AND BEZAFIBRATE IN HEALTHY VOLUNTEERS” (Poster #Mo1628)Session: Human and Experimental Cholestatic and Autoimmune Liver DiseasesMonday, May 5, 12:30 PM ETJennifer Burkey, Karen Brown, Heng Zou, Jennifer Boston, Mary Erickson “DEVELOPMENT OF A DE NOVO CLINICAL OUTCOME ASSESSMENT FOR CHRONIC INTESTINAL PSEUDO-OBSTRUCTION" (Poster #Mo1258)Session: Patient Report and Clinical Outcomes: IBD, GERC, Functional Disorders, Other Monday, May 5, 12:30 PM ETMadhusudan Grover, Jan Tack, Sara Manzoni, Elena Pasquali, Valeria Scuderi, Vincenzo Stanghellini More information about these presentations will be made available after the respective embargoes, as set by the DDW organizers, are lifted for each presentation. A full list of sessions at DDW 2025 is available at www.ddw.org. Attendees of DDW can visit Intercept at booths #2011 and #2411 throughout the meeting. About Digestive Disease WeekDigestive Disease Week (DDW) is the largest international gathering of physicians, researchers and academics in the fields of gastroenterology, hepatology, endoscopy and gastrointestinal surgery. Jointly sponsored by the American Association for the Study of Liver Diseases (AASLD), the American Gastroenterological Association (AGA), the American Society for Gastrointestinal Endoscopy (ASGE) and the Society for Surgery of the Alimentary Tract (SSAT), DDW is an in-person and online meeting from May 3-6, 2025. The meeting showcases more than 5,600 abstracts and hundreds of lectures on the latest advances in GI research, medicine and technology. More information can be found at www.ddw.org. About Primary Biliary CholangitisPrimary biliary cholangitis (PBC) is a rare, progressive and chronic autoimmune disease that affects the bile ducts in the liver and is most prevalent (approximately 1 in 10,000) in women over the age of 40. PBC causes bile acid to build up in the liver, resulting in inflammation and scarring (fibrosis), which, if left untreated, can lead to cirrhosis, a liver transplant or death. About Severe Alcohol-Associated Hepatitis (sAH)Alcohol-related liver disease (ALD) as a cause of chronic liver disease is on the rise in the U.S. and is currently the leading indication for liver transplant listing overall in the U.S. Patients with severe alcohol-associated hepatitis (sAH) are now younger, with an increased representation of females compared to past decades, reflecting changing patterns of alcohol consumption in the U.S. Currently, there are no medicines with an approved indication to treat patients with sAH. About Primary Sclerosing CholangitisPrimary sclerosing cholangitis (PSC) is a rare, life-threatening, chronic cholestatic liver disease characterized by progressive destruction of bile ducts that leads to the development of cirrhosis and end-stage liver disease or cancer in a majority of patients. About the Investigational Obeticholic Acid-Bezafibrate CombinationIntercept has two ongoing Phase 2 studies (747-213 / NCT04594694, 747-214 / NCT05239468) that are exploring a range of therapeutic doses for the combination of obeticholic acid (OCA) and bezafibrate for the potential treatment of individuals with PBC. Obeticholic acid, a farnesoid X receptor (FXR) agonist, is marketed by Intercept as OCALIVA in the United States for the treatment of PBC (see below for full indication and Important Safety Information). Bezafibrate, a pan-peroxisome proliferator-activated receptor (pan-PPAR) agonist, is not approved in the United States for any indication. FXR and PPAR are distinct pathways that each play a role in PBC. Simultaneously targeting both pathways may offer the greatest potential to impact bile acid synthesis, metabolism, and clearance that underly cholestatic liver diseases. Published studies establish a clinical proof-of-concept which suggests that the combination of obeticholic acid and bezafibrate may provide additive clinical efficacy and tolerability benefits in the treatment of PBC. Obeticholic acid-bezafibrate combination therapy is investigational; safety and efficacy have not been established. About OCALIVA (obeticholic acid)OCALIVA, a farnesoid X receptor (FXR) agonist, is indicated for the treatment of adult patients with primary biliary cholangitis (PBC) without cirrhosis orwith compensated cirrhosis who do not have evidence of portal hypertension, either in combination with ursodeoxycholic acid (UDCA) with an inadequate response to UDCA or as monotherapy in patients unable to tolerate UDCA. This indication is approved under accelerated approval based on a reduction in alkaline phosphatase (ALP). An improvement in survival or disease-related symptoms has not been established. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trials. IMPORTANT SAFETY INFORMATION WARNING: HEPATIC DECOMPENSATION AND FAILURE IN PRIMARY BILIARY CHOLANGITIS PATIENTS WITH CIRRHOSIS Hepatic decompensation and failure, sometimes fatal or resulting in liver transplant, have been reported with OCALIVA treatment in primary biliary cholangitis (PBC) patients with either compensated or decompensated cirrhosis. OCALIVA is contraindicated in PBC patients with decompensated cirrhosis, a prior decompensation event, or with compensated cirrhosis who have evidence of portal hypertension. Permanently discontinue OCALIVA in patients who develop laboratory or clinical evidence of hepatic decompensation; have compensated cirrhosis and develop evidence of portal hypertension, or experience clinically significant hepatic adverse reactions while on treatment. Contraindications OCALIVA is contraindicated in patients with: decompensated cirrhosis (e.g., Child-Pugh Class B or C) or a prior decompensation eventcompensated cirrhosis who have evidence of portal hypertension (e.g., ascites, gastroesophageal varices, persistent thrombocytopenia)complete biliary obstruction Warnings and Precautions Hepatic Decompensation and Failure in PBC Patients with Cirrhosis Hepatic decompensation and failure, sometimes fatal or resulting in liver transplant, have been reported with OCALIVA treatment in PBC patients with cirrhosis, either compensated or decompensated. Among post-marketing cases reporting it, median time to hepatic decompensation (e.g., new onset ascites) was four months for patients with compensated cirrhosis; median time to a new decompensation event (e.g., hepatic encephalopathy) was 2.5 months for patients with decompensated cirrhosis. Some of these cases occurred in patients with decompensated cirrhosis when they were treated with higher than the recommended dosage for that patient population; however, cases of hepatic decompensation and failure have continued to be reported in patients with decompensated cirrhosis even when they received the recommended dosage. Hepatotoxicity was observed in the OCALIVA clinical trials. A dose-response relationship was observed for the occurrence of hepatic adverse reactions including jaundice, worsening ascites, and primary biliary cholangitis flare with dosages of OCALIVA of 10 mg once daily to 50 mg once daily (up to 5-times the highest recommended dosage), as early as one month after starting treatment with OCALIVA in two 3-month, placebo-controlled clinical trials in patients with primarily early stage PBC. Routinely monitor patients for progression of PBC, including hepatic adverse reactions, with laboratory and clinical assessments to determine whether drug discontinuation is needed. Closely monitor patients with compensated cirrhosis, concomitant hepatic disease (e.g., autoimmune hepatitis, alcoholic liver disease), and/or with severe intercurrent illness for new evidence of portal hypertension (e.g., ascites, gastroesophageal varices, persistent thrombocytopenia), or increases above the upper limit of normal in total bilirubin, direct bilirubin, or prothrombin time to determine whether drug discontinuation is needed. Permanently discontinue OCALIVA in patients who develop laboratory or clinical evidence of hepatic decompensation (e.g., ascites, jaundice, variceal bleeding, hepatic encephalopathy), have compensated cirrhosis and develop evidence of portal hypertension (e.g., ascites, gastroesophageal varices, persistent thrombocytopenia), experience clinically significant hepatic adverse reactions, or develop complete biliary obstruction. If severe intercurrent illness occurs, interrupt treatment with OCALIVA and monitor the patient’s liver function. After resolution of the intercurrent illness, consider the potential risks and benefits of restarting OCALIVA treatment. Severe Pruritus Severe pruritus was reported in 23% of patients in the OCALIVA 10 mg arm, 19% of patients in the OCALIVA titration arm, and 7% of patients in the placebo arm in a 12-month double-blind randomized controlled clinical trial of 216 patients. Severe pruritus was defined as intense or widespread itching, interfering with activities of daily living, or causing severe sleep disturbance, or intolerable discomfort, and typically requiring medical interventions. Consider clinical evaluation of patients with new onset or worsening severe pruritus. Management strategies include the addition of bile acid binding resins or antihistamines, OCALIVA dosage reduction, and/or temporary interruption of OCALIVA dosing. Reduction in HDL-C Patients with PBC generally exhibit hyperlipidemia characterized by a significant elevation in total cholesterol primarily due to increased levels of high-density lipoprotein-cholesterol (HDL-C). Dose-dependent reductions from baseline in mean HDL-C levels were observed at 2 weeks in OCALIVA-treated patients, 20% and 9% in the 10 mg and titration arms, respectively, compared to 2% in the placebo arm. Monitor patients for changes in serum lipid levels during treatment. For patients who do not respond to OCALIVA after one year at the highest recommended dosage that can be tolerated (maximum of 10 mg once daily), and who experience a reduction in HDL-C, weigh the potential risks against the benefits of continuing treatment. Adverse Reactions The most common adverse reactions (≥5%) are pruritus, fatigue, abdominal pain and discomfort, rash, oropharyngeal pain, dizziness, constipation, arthralgia, thyroid function abnormality, and eczema. Drug Interactions Bile Acid Binding Resins Bile acid binding resins such as cholestyramine, colestipol, or colesevelam adsorb and reduce bile acid absorption and may reduce the absorption, systemic exposure, and efficacy of OCALIVA. If taking a bile acid binding resin, take OCALIVA at least four hours before or four hours after taking the bile acid binding resin, or at as great an interval as possible.Warfarin The International Normalized Ratio (INR) decreased following coadministration of warfarin and OCALIVA. Monitor INR and adjust the dose of warfarin, as needed, to maintain the target INR range when co-administering OCALIVA and warfarin.CYP1A2 Substrates with Narrow Therapeutic Index Obeticholic acid may increase the exposure to concomitant drugs that are CYP1A2 substrates. Therapeutic monitoring of CYP1A2 substrates with a narrow therapeutic index (e.g., theophylline and tizanidine) is recommended when co-administered with OCALIVA.Inhibitors of Bile Salt Efflux Pump Avoid concomitant use of inhibitors of the bile salt efflux pump (BSEP) such as cyclosporine. Concomitant medications that inhibit canalicular membrane bile acid transporters such as the BSEP may exacerbate accumulation of conjugated bile salts including taurine conjugate of obeticholic acid in the liver and result in clinical symptoms. If concomitant use is deemed necessary, monitor serum transaminases and bilirubin. Please click here for Full Prescribing Information, including boxed WARNING. To report SUSPECTED ADVERSE REACTIONS, contact Intercept Pharmaceuticals, Inc. at 1-844-782-ICPT or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. About InterceptIntercept, part of the Alfasigma Group since 2023, focuses on the development and commercialization of novel therapeutics to treat serious liver and GI diseases, including primary biliary cholangitis (PBC) and severe alcohol-associated hepatitis (sAH). Intercept owns the commercial rights to OCALIVA in the U.S. market. For more information, please visit www.interceptpharma.com or connect with the Company on LinkedIn, and X (formerly Twitter). About Alfasigma Alfasigma is a global pharmaceutical company founded over 75 years ago in Italy, where it is headquartered (in Bologna and Milan). The Group operates in over 100 markets spanning Europe, North and South America, Asia, and Africa. It has offices in many countries, including Italy, the United States (US), Spain, Germany, Mexico, and China; production sites in Italy, Spain, and the US; and R&D labs in Italy (Pomezia and Bergamo). Alfasigma employs approximately 4,000 people dedicated to research, development, production, and distribution of medicinal products contributing to its mission to provide better health and a better quality of life for patients, caregivers, and healthcare providers. It focuses on three main therapeutic areas: Gastroenterology/Hepatology, Vascular, and Rheumatology. Its portfolio spans from primary care to specialty care, rare disease medications, and consumer health products, including medical foods and nutraceuticals. For more information, please visit www.alfasigma.com or connect with the Company on LinkedIn, ContactFor more information about Intercept, please contact: media@interceptpharma.com

– New findings to be presented at the 2025 European Association for the Study of the Liver (EASL) Congress continue to demonstrate the effectiveness of Livdelzi (seladelpar) in reducing pruritus in people with primary biliary cholangitis (PBC) – – Additional presentations will showcase the potential for maintained virologic response following treatment with investigational bulevirtide in people with hepatitis delta virus (HDV) – – Presentations in hepatitis B virus (HBV) and hepatitis C virus (HCV) will underscore Gilead’s commitment to advancing scientific research and our understanding of viral hepatitis in the real-world setting – FOSTER CITY, Calif.--(BUSINESS WIRE)-- Gilead Sciences, Inc. (Nasdaq:GILD) today announced new research to be presented at the European Association for the Study of the Liver (EASL) Congress, May 7-10, 2025, Amsterdam, furthering Gilead’s commitment to transform the lives of people living with liver disease. New data to be presented at EASL will include a subgroup analysis from ASSURE, an ongoing open-label study, and an analysis of the Phase 3 RESPONSE trial and the open-label extension. Data will reinforce the effectiveness of Livdelzi® (seladelpar), known as Lyvdelzi® in the European Union, in reducing pruritus (chronic itch), a debilitating common symptom of primary biliary cholangitis (PBC). Moreover, the results will highlight seladelpar’s ability to deliver a sustained biochemical response regardless of prior treatment history, and as an option for a broad range of people with PBC. “Our focus remains on addressing the areas of greatest unmet need across liver diseases,” said Dietmar Berger, MD, PhD, Chief Medical Officer, Gilead Sciences. “Our deep expertise in treating liver disease has delivered the first and only treatment for hepatitis delta and the first treatment for primary biliary cholangitis that has demonstrated statistically significant improvements across both chronic itch and markers of disease progression. Our studies continue to deliver transformational insights and therapies to help foster healthier futures for the millions of people who live with viral hepatitis and those who live with less prevalent liver conditions with remaining high unmet needs.” Key findings from 29 accepted abstracts will include two oral presentations showcasing new data on the critical goal of maintained virologic response following treatment with 2 mg and 10 mg bulevirtide in people living with hepatitis delta virus (HDV). These findings build on the wealth of long-term data for the treatment of chronic HDV. A late breaker presentation on the final results from the pivotal MYR301 Phase 3 study evaluating the efficacy and safety of 2 mg and 10 mg bulevirtide as monotherapy will reveal long-term response rates, including the proportion of participants with undetectable virus levels two years after treatment cessation. In hepatitis B (HBV), Gilead will present initial results from a Phase 1a study of a novel investigational therapeutic vaccine that shows early promise towards the goal of achieving a functional cure for HBV infection. A separate analysis of real-world data showed that individuals with low-level HBV viremia still have a risk of negative events. Additionally, a retrospective analysis of participants enrolled in two Phase 3 studies evaluating Vemlidy® (tenofovir alafenamide) using a risk score for liver cancer highlights the importance of treatment to help reduce liver cancer risk. Gilead will also showcase real-world data on hepatitis C (HCV), demonstrating the effects of direct-acting antivirals (DAA) against all genotypes of the virus across diverse geographical regions, supporting the global applicability of HCV treatment guidelines. In addition, new real-world insights will show that the choice of DAA for people living with HCV taking other medicines, such as antipsychotics, was associated with reducing the problem of drug-drug interactions. To help raise awareness about HCV and encourage people to get screened for the disease, Gilead will again support EASL’s “Love Your Liver” Campaign at the congress. At the EASL Congress, Gilead, in collaboration with the PBC Foundation and Friends of the PBC Foundation, will also launch “All the Feelings with PBC,” a campaign highlighting the experiences of people living with PBC and emphasizing the importance of listening to and addressing their needs in clinical practice and research. The campaign will feature paintings by Berlin-based artist, Nour Khwies, based on the physical and emotional experiences of people living with PBC: Dilek from Germany, Angela from Scotland, Joana from Portugal, and L. Marie from the United States, whose painting will be painted live at EASL. Key Abstracts at EASL 2025: ID Abstract Title PBC THU-291 Clinical meaningful change of pruritus numeric rating scale in adults with primary biliary cholangitis with moderate-to-severe pruritus THU-286 Seladelpar treatment of patients with primary biliary cholangitis improves the GLOBE score and predicts improved transplant-free survival THU-294 Change in pruritus in patients with primary biliary cholangitis and moderate-to-severe pruritus: A pooled analysis from the RESPONSE and ENHANCE studies THU-274 Efficacy and safety of seladelpar in patients previously treated with fibrates or OCA FRI-318 Evaluation of the potential impact of seladelpar on the pharmacokinetics of midazolam, tolbutamide, simvastatin, rosuvastatin, and atorvastatin HDV OS-066 Predictors of undetectable hepatitis delta virus RNA at 48 weeks after end of treatment with bulevirtide monotherapy in the MYR 301 study OS-070 Achieving undetectable hepatitis delta virus RNA at end of therapy with bulevirtide 10 mg/day with or without pegIFN is strongly associated with post-treatment virologic response in chronic hepatitis delta LBO-004 Final results of MYR301: A randomised Phase 3 study evaluating the efficacy and safety of up to 144 weeks of bulevirtide monotherapy for chronic hepatitis delta and 96 weeks of posttreatment follow-up HCV WED-276 The SVR10K Hepatitis C study: Final results show 98.9% SVR in 7,000 patients treated with SOF/VEL in Asia, Latin America, Middle East, Nordics, and Southern Europe WED-031 Healthcare resource use (HCRU) and cost impact of potential drug-drug interactions (DDIs) among HCV patients receiving Direct-Acting Antivirals (DAAs) concomitantly with antipsychotic drugs in the US HBV THU-246 Safety, tolerability and immunogenicity of GS-2829 and GS-6779, a novel arenaviral vectored therapeutic hepatitis B vaccine: results from a phase 1a study in healthy participants SAT-009 Risk of advanced liver disease among individuals with hepatitis B virus infection with low level viremia compared to individuals with no evidence of hepatitis B virus infection WED-296 Impact of long-term tenofovir-based treatment on hepatocellular carcinoma risk in patients with chronic hepatitis B using the reREACH-B score For more information on the EASL Congress 2025 and Gilead’s presentations, please visit the congress website. About Gilead Sciences in Liver Disease For decades, Gilead has pioneered the way forward to improve the lives of people living with liver disease around the world. The company has helped to transform hepatitis C from a chronic condition into a curable condition. For individuals living with hepatitis B or hepatitis delta, Gilead's focus on advancing medicines drives hope that today’s research will turn into tomorrow’s cures. Beyond viral hepatitis, Gilead is working to deliver advanced treatments for people living with PBC. The commitment of Gilead does not stop there. Through ground-breaking science and collaborative partnerships, the company strives to create healthier futures for everyone living with liver disease. Gilead remains devoted to a future without liver disease. Marketing Authorization In July 2023, the European Commission (EC) granted full Marketing Authorization (MA) for Hepcludex® (bulevirtide) 2 mg for the treatment of adults with chronic HDV and compensated liver disease. Bulevirtide was initially granted a conditional MA from the EC in July 2020 to provide people living with HDV urgent access to treatment. Bulevirtide’s conditional MA license in the UK was converted to a full MA in August 2023, and a full MA was granted in Switzerland in February 2024. In regions where bulevirtide is not approved, including the U.S., bulevirtide 2 mg is an investigational product. In these regions, health authorities have not established the safety and efficacy of bulevirtide. Bulevirtide 10 mg is an investigational product and is not approved anywhere globally. In February 2025, the European Commission (EC) granted conditional marketing authorization for Lyvdelzi® (seladelpar) for the treatment of PBC in combination with ursodeoxycholic acid (UDCA) in adults who have an inadequate response to UDCA alone, or as monotherapy in those unable to tolerate UDCA. Lyvdelzi provides an important treatment option for people living with PBC in the European Economic Area (EEA). Gilead is working with health authorities across Europe to ensure people living with PBC who are eligible for Lyvdelzi have access as soon as possible. Continued approval of Lyvdelzi for the approved indication will be contingent on verification and description of clinical benefit in confirmatory trial(s). Lyvdelzi has Priority Medicine (PRIME) designation in the EU, assigned to optimize the development of novel medicines that target conditions with an unmet medical need for which no treatment options exist or where they can offer a major therapeutic advantage over existing treatments, as well as well as Orphan Drug Designation for the treatment of people living with PBC. Livdelzi® received conditional approval from the UK Medicines and Healthcare products Regulatory Agency (MHRA) in January 2025. In the U.S., Livdelzi® obtained accelerated approval for the treatment of PBC by the U.S. Food and Drug Administration (FDA) in August 2024. Livdelzi received Breakthrough Therapy Designation, as well as Orphan Drug Designation for the treatment of people living with PBC. As part of the FDA accelerated approval, Gilead has committed to AFFIRM, a long-term outcomes study, which has begun in people with compensated cirrhosis. Continued U.S. approval may be contingent upon verification of clinical benefit in confirmatory trial(s). Regulatory review for Livdelzi is underway in Canada, Australia, and Switzerland. U.S. Indication for Livdelzi® Livdelzi is indicated for the treatment of primary biliary cholangitis (PBC) in combination with ursodeoxycholic acid (UDCA) in adults who have had an inadequate response to UDCA, or as monotherapy in patients unable to tolerate UDCA. The FDA approved this indication under accelerated approval based on a reduction of alkaline phosphatase (ALP). Improvement in survival or prevention of liver decompensation events have not been demonstrated. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trial(s). Limitations of Use: Use of Livdelzi is not recommended in patients who have or develop decompensated cirrhosis (e.g., ascites, variceal bleeding, hepatic encephalopathy). U.S. Important Safety Information for Livdelzi Warnings and Precautions Fractures: Fractures occurred in 4% of Livdelzi-treated patients compared to no placebo-treated patients. Consider the risk of fracture in the care of patients treated with Livdelzi and monitor bone health according to current standards of care. Liver Test Abnormalities: Livdelzi has been associated with dose-related increases in serum transaminase (AST and ALT) levels > 3 x ULN in patients receiving 50 mg and 200 mg once daily (5x and 20x higher than the recommended dosage of 10 mg once daily). Perform baseline clinical and laboratory testing when starting Livdelzi® and monitor thereafter according to routine patient management. Interrupt treatment if the liver tests (ALT, AST, total bilirubin, and/or ALP) worsen, or if the patient develops signs and symptoms of clinical hepatitis (eg, jaundice, right upper quadrant pain, eosinophilia). Consider permanent discontinuation if liver tests worsen after restarting Livdelzi. Biliary Obstruction: Avoid use of Livdelzi in patients with complete biliary obstruction. If biliary obstruction is suspected, interrupt Livdelzi and treat as clinically indicated. Adverse Reactions The most common adverse reactions (≥5%) with Livdelzi were headache (8%), abdominal pain (7%), nausea (6%), abdominal distension (6%), and dizziness (5%). Drug Interactions OAT3 Inhibitors and Strong CYP2C9 Inhibitors: Avoid co-administration with L due to increased Livdelzi exposure. Rifampin: Monitor biochemical response (e.g., ALP and bilirubin) when patients initiate rifampin during Livdelzi treatment. Coadministration may result in delayed or suboptimal biochemical response of Livdelzi. Dual Moderate CYP2C9 and Moderate-to-Strong CYP3A4 Inhibitors and BCRP Inhibitors (e.g., cyclosporine): Monitor closely for adverse effects. Concomitant administration with Livdelzi may increase Livdelzi exposure. CYP2C9 Poor Metabolizers Using Moderate-to-Strong CYP3A4 Inhibitors: Monitor more frequently for adverse reactions as concomitant use of a moderate-to-strong CYP3A4 inhibitor in patients who are CYP2C9 poor metabolizers may increase Livdelzi exposure and risk of LIVDELZI adverse reactions. Bile Acid Sequestrants: Administer Livdelzi at least 4 hours before or 4 hours after taking a bile acid sequestrant, or at as great an interval as possible. Pregnancy and Lactation Pregnancy: There is insufficient data from human pregnancies exposed to Livdelzi to allow an assessment of a drug-associated risk of major birth defects, miscarriage, or other adverse maternal or fetal outcomes. Report pregnancies to Gilead Sciences, Inc., at 1-800-445-3235. Lactation: There is no data on the presence of Livdelzi in human milk, the effects on the breastfed infant, or the effects on milk production. The developmental and health benefits of breastfeeding should be considered along with the mother's clinical need for Livdelzi and any potential adverse effects on the breastfed infant from Livdelzi. U.S. Indication for Vemlidy® VEMLIDY is indicated for the treatment of chronic hepatitis B virus infection in adults and pediatric patients six years of age and older and weighing at least 25 kg with compensated liver disease. U.S. Important Safety Information for and Indication for the Use of Vemlidy BOXED WARNING: POSTTREATMENT SEVERE ACUTE EXACERBATION OF HEPATITIS B Discontinuation of anti-hepatitis B therapy, including VEMLIDY, may result in severe acute exacerbations of hepatitis B. Hepatic function should be monitored closely with both clinical and laboratory follow-up for at least several months in patients who discontinue anti-hepatitis B therapy, including VEMLIDY. If appropriate, resumption of anti-hepatitis B therapy may be warranted. Warnings and Precautions Risk of Development of HIV-1 Resistance in HBV/HIV-1 Coinfected Patients:Due to this risk, VEMLIDY alone should not be used for the treatment of HIV-1 infection. Safety and efficacy of VEMLIDY have not been established in HBV/HIV-1 coinfected patients. HIV antibody testing should be offered to all HBV-infected patients before initiating therapy with VEMLIDY, and if positive, an appropriate antiretroviral combination regimen that is recommended for HBV/HIV-1 coinfected patients should be used. New Onset or Worsening Renal Impairment:Postmarketing cases of renal impairment, including acute renal failure, proximal renal tubulopathy (PRT), and Fanconi syndrome, have been reported with TAF-containing products. Patients with impaired renal function and/or taking nephrotoxic agents (including NSAIDs) are at increased risk of renal-related adverse reactions. Discontinue VEMLIDY in patients who develop clinically significant decreases in renal function or evidence of Fanconi syndrome. Monitor renal function in all patients – See Dosage and Administration. Lactic Acidosis and Severe Hepatomegaly with Steatosis:Fatal cases have been reported with the use of nucleoside analogs, including tenofovir disoproxil fumarate (TDF). Discontinue VEMLIDY if clinical or laboratory findings suggestive of lactic acidosis or pronounced hepatotoxicity develop, including hepatomegaly and steatosis in the absence of marked transaminase elevations. Adverse Reactions Most common adverse events in the week 96 pediatric population reported in ≥5% were: nasopharyngitis, headache, COVID-19, pyrexia, diarrhea, upper respiratory tract infection, cough, respiratory tract infection viral, abdominal pain upper. Overall, abdominal pain upper and metabolic nephropathy were the only study drug–related adverse events, which occurred in > 1 participant, reported in 2.3% (2/88 participants) each. Drug Interactions Coadministration of VEMLIDY with drugs that reduce renal function or compete for active tubular secretion may increase concentrations of tenofovir and the risk of adverse reactions. Coadministration of VEMLIDY is not recommended with the following: oxcarbazepine, phenobarbital, phenytoin, rifabutin, rifampin, rifapentine, or St. John’s wort. Such coadministration is expected to decrease the concentration of tenofovir alafenamide, reducing the therapeutic effect of VEMLIDY. Drugs that strongly affect P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP) activity may lead to changes in VEMLIDY absorption. Coadministration of VEMLIDY with carbamazepine, the tenofovir alafenamide dose should be increased to two tablets once daily. Consult the full prescribing information for VEMLIDY for more information on potentially significant drug interactions, including clinical comments. Dosage and Administration Testing Prior to Initiation:HIV infection. Prior to or When Initiating, and During Treatment:On a clinically appropriate schedule, assess serum creatinine, estimated creatinine clearance, urine glucose, and urine protein in all patients. In patients with chronic kidney disease, also assess serum phosphorus. Dosage:1 tablet taken once daily with food. Renal Impairment:Not recommended in patients with end-stage renal disease (ESRD; eCrCl <15 mL/min) who are not receiving chronic hemodialysis; in patients on chronic hemodialysis, on hemodialysis days, administer VEMLIDY after completion of hemodialysis treatment. No data are available to make dose recommendations in pediatric patients with renal impairment. Hepatic Impairment:Not recommended in patients with decompensated (Child-Pugh B or C) hepatic impairment. About Gilead Sciences Gilead Sciences, Inc. is a biopharmaceutical company that has pursued and achieved breakthroughs in medicine for more than three decades, with the goal of creating a healthier world for all people. The company is committed to advancing innovative medicines to prevent and treat life-threatening diseases, including HIV, viral hepatitis, COVID-19, cancer and inflammation. Gilead operates in more than 35 countries worldwide, with headquarters in Foster City, California. Forward-Looking Statements This press release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that are subject to risks, uncertainties and other factors, including Gilead’s ability to initiate, progress or complete clinical trials within currently anticipated timelines or at all, and the possibility of unfavorable results from ongoing or additional clinical trials, including those involving Lyvdelzi®/Livdelzi® (seladelpar), Vemlidy®, bulevirtide, sofosbuvir, velpatasvir, GS-2829 and GS-6779 (such as the ASSURE, MYR301, RESPONSE, SVR10K and any confirmatory studies); uncertainties relating to regulatory applications and related filing and approval timelines, including additional pending and potential applications for seladelpar; the risk that any regulatory approvals, if granted, may be subject to significant limitations on use or subject to withdrawal or other adverse actions by the applicable regulatory authority; uncertainties regarding Gilead’s ability to coordinate access to seladelpar in a timely manner or at all; the risk that physicians may not see the benefits of prescribing seladelpar for treatment of PBC; and any assumptions underlying any of the foregoing. These and other risks, uncertainties and factors are described in detail in Gilead’s Annual Report on Form 10-K for the year ended December 31, 2024, as filed with the U.S. Securities and Exchange Commission. These risks, uncertainties and other factors could cause actual results to differ materially from those referred to in the forward-looking statements. All statements other than statements of historical fact are statements that could be deemed forward-looking statements. The reader is cautioned that any such forward-looking statements are not guarantees of future performance and involve risks and uncertainties and is cautioned not to place undue reliance on these forward-looking statements. All forward-looking statements are based on information currently available to Gilead, and Gilead assumes no obligation and disclaims any intent to update any such forward-looking statements. Hepcludex, Lyvdelzi, Livdelzi, Vemlidy, Gilead and the Gilead logo are registered trademarks of Gilead Sciences, Inc., or its related companies. Full Prescribing Information for Livdelzi® and Vemlidy® are available at www.gilead.com . For more information about Gilead, please visit the company’s website at www.gilead.com , follow Gilead on X/Twitter (@Gilead Sciences) and LinkedIn (@Gilead-Sciences). Blair Baumwell, Media public_affairs@gilead.com Jacquie Ross, Investors investor_relations@gilead.com

- 28-week data from Phase 2b VANTAGE PBC study highlighting improvements in itch and fatigue will be presented at EASL - Data from Mirum studies presented at DDW, EASL, and ESPGHAN congresses FOSTER CITY, Calif.--(BUSINESS WIRE)-- Mirum Pharmaceuticals, Inc. (NASDAQ: MIRM) today announced that it will present data at three upcoming medical congresses. Digestive Disease Week (DDW) will be held in San Diego, May 3-6, 2025. The European Association for the Study of the Liver (EASL) will take place May 7-10 in Amsterdam, the Netherlands. The 57th European Society for Paediatric, Gastroenterology, Hepatology, and Nutrition (ESPGHAN) Annual Meeting will follow May 14-17 in Helsinki, Finland. Data from Mirum’s LIVMARLI and volixibat studies will be highlighted in oral and poster presentations during the congresses. “We are excited to see the continued evidence generated by Mirum medicines and product candidates across a number of settings,” said Joanne Quan, MD, chief medical officer at Mirum. “In particular, we look forward to sharing updated data from the interim analysis of the VANTAGE study of volixibat in patients with pruritus due to PBC. We are encouraged by the positive results which show a meaningful decrease in pruritus that lasts for the duration of the placebo-controlled period.” EASL – May 7-10, 2025 Abstract #OS-059 (Oral): Volixibat for the treatment of cholestatic pruritus in primary biliary cholangitis: an adaptive, randomized, placebo-controlled phase 2B trial (VANTAGE): 28-week interim analysis Friday, May 9 from 8:30-8:45am CEST Immune-mediated and Cholestatic Diseases Session, McIntyre Room Presented by: Michael Heneghan, MD, MMedSc, FRCPI, King’s College, London, UK New 28-week data were reported from the Phase 2 VANTAGE study evaluating volixibat in patients with cholestatic pruritus related to primary biliary cholangitis (PBC). Thirty-one patients with moderate-to-severe pruritus were randomized (20mg VLX=10, 80mg VLX=10, placebo=11). Data showed that volixibat led to early and significant reductions in PBC-associated cholestatic pruritus and were maintained throughout the duration of the study. Further, 70% of volixibat-treated patients had a ≥50% reduction in serum bile acid levels from baseline. Additionally, patients treated with volixibat experienced improvements in fatigue and sleep. No new safety signals were observed through 28 weeks of treatment. The most common treatment-emergent adverse event was diarrhea which was mild to moderate in severity and transient in nature. Additional data will be shared following the formal presentation on May 9. EASL Symposium Wednesday, May 7 from 1:30-2:30pm CEST Adult Cholestatic Liver Disease: Focusing on Clinical Outcomes and the Future of IBAT Inhibitors An archive of the symposium will be available following the event. DDW Oral Presentations Presentation 784: Volixibat for the Treatment of Cholestatic Pruritus in Primary Biliary Cholangitis: An Adaptive, Randomized, Placebo-controlled Phase 2B Trial (VANTAGE): Interim Results Monday, May 5 from 2:15-2:30pm PT Cholestatic Liver Disease session, Room 6C Presented by Mitchell Schiffman, MD, Bon Secours Liver Institute, Virginia, USA Presentation 1086: Comprehensive Analysis of Cholestasis Genetic Panel Results From 2016–2022 in Children and Young Adults: Insights into Diagnostic Yield Tuesday, May 6 from 10:00-10:15am PT Human and Experimental Cholestatic and Autoimmune Liver Diseases, Room 6F Presented by Brett Hoskins, DO, Indiana University School of Medicine, Indiana, USA Poster Presentations Poster Su1756: Genetic Insights Into PFIC-associated Genes in Unexplained Chronic Cholestasis and Liver Disease: Frequency and Implications of Variant Combinations Sunday, May 4 from 12:30-1:30pm PT Pediatric Hepatology Session, DDW Poster Hall, C-E Presented by Brett Hoskins, DO, Indiana University School of Medicine, Indiana, USA Poster Mo1627: Improvements in Pruritus, Serum Bile Acids, and Total Bilirubin Following Treatment with Maralixibat in Patients with Primary Sclerosing Cholangitis Monday, May 5 from 12:30-1:30pm PT Human and Experimental Cholestatic and Autoimmune Liver Diseases, DDW Poster Hall C-E Presented by Jessica Hochberg, MD, University of Miami Miller School of Medicine, Florida, USA ESPGHAN – May 14-17, 2025 Oral presentations Abstract 1066: Improvements in pruritus are associated with growth in patients with progressive familial intrahepatic cholestasis: Data from the MARCH-ON trial Saturday, May 17 from 9:15-11:15am EEST Nutrition and Hepatology Session, Hall 3G Presented by Professor Richard Thompson, King’s College, London, UK Abstract 1089: The relationship between serum bile acids and event-free survival following the use of maralixibat for progressive familial intrahepatic cholestasis (PFIC): Data from the MARCH/MARCH-ON trials Saturday, May 17 from 1:10-2:40pm EEST Hepatology Abstracts, Hall 3G Presented by Professor Richard Thompson, King’s College, London, UK Abstract 1110: Improvements in pruritus after maralixibat treatment are associated with improved health-related quality of life for patients with cholestatic liver disease Saturday, May 17 from 1:10-2:40pm EEST Hepatology Abstracts, Hall 3G Presented by Dr. Emmanuel Gonzales, Hépatologie Pédiatrique, Hôpital Bicêtre, AP-HP. Université Paris-Saclay, Le Kremlin-Bicêtre, France Abstract 1098: Bile acid subspecies are correlated with pruritus and bilirubin improvement in PFIC patients treated with maralixibat: Data from MARCH and MARCH-ON Saturday, May 17 from 1:10-2:40pm EEST Hepatology Abstracts, Hall 3G Presented by Dr. Henkjan Verkade, University of Groningen, Beatrix Children’s Hospital and University Medical Center Groningen, Netherlands Poster presentations Abstract 1102: Greater improvements in bilirubin were observed in pruritus responders after maralixibat treatment in patients with PFIC: data from the MARCH/MARCH-ON trials Friday, May 16 from 3:30-4:20pm EST General Hepatology 02 Session, e-Poster Station 08 Presented by Professor Richard Thompson, King’s College, London, UK Abstract 1094: Impact of long-term maralixibat treatment on concomitant medication use for the treatment of cholestatic pruritus in Alagille syndrome: Real-world experience in the United States Friday, May 16 from 3:30-4:20pm EEST General Hepatology 03 & Transplantation Session, e-Poster Station 09 Presented by Dr. Tony Tokman, Mirum Pharmaceuticals, Inc., Foster City, California USA Abstract 1107: Clinical benefits of maralixibat for patients with Alagille syndrome are durable through 7 years of treatment: Data from the MERGE study Friday, May 16 from 3:30-4:20pm EEST General Hepatology Session 02, e-Poster Station 08 Presented by Dr. Emmanuel Gonzales, Hépatologie Pédiatrique, Hôpital Bicêtre, AP-HP. Université Paris-Saclay, Le Kremlin-Bicêtre, France ESPGHAN Symposium Thursday, May 15 from 12:45-1:45pm EEST Hall 3C Growing Knowledge and Evidence: Long-term impact of IBAT inhibition Full presentations will be available within the Publications and Presentations section on Mirum’s website. About Volixibat Volixibat is an oral, minimally absorbed agent designed to selectively inhibit the ileal bile acid transporter (IBAT). Volixibat may offer a novel approach in the treatment of adult cholestatic diseases by blocking the recycling of bile acids, through inhibition of IBAT, thereby reducing bile acids systemically and in the liver. Volixibat is currently being evaluated in Phase 2b studies for primary sclerosing cholangitis (PSC) (VISTAS study), and primary biliary cholangitis (PBC) (VANTAGE study). In June, Mirum announced positive interim results from the Phase 2b VANTAGE study showing statistically significant improvement in pruritus as well as meaningful reductions in serum bile acids and improvements in fatigue for patients treated with volixibat. No new safety signals were observed, and the most common adverse event was diarrhea with all cases mild to moderate. Volixibat has been granted breakthrough therapy designation for the treatment of PBC. About LIVMARLI® (maralixibat) oral solution and LIVMARLI® (maralixibat) tablets LIVMARLI® (maralixibat) is an orally administered, ileal bile acid transporter (IBAT) inhibitor approved by the U.S. Food and Drug Administration for two pediatric cholestatic liver diseases, in both liquid and tablet formulations. It is approved for the treatment of cholestatic pruritus in patients with Alagille syndrome (ALGS) in the U.S. three months of age and older and in Europe for patients two months of age and older. It is also approved in the U.S. for the treatment of cholestatic pruritus in patients with progressive familial intrahepatic cholestasis (PFIC) 12 months of age and older and in Europe for the treatment of PFIC in patients three months of age and older. For more information for U.S. residents, please visit LIVMARLI.com. LIVMARLI is currently being evaluated in the Phase 3 EXPAND study in additional settings of cholestatic pruritus. To learn more about ongoing clinical trials with LIVMARLI, please visit Mirum’s clinical trials section on the company’s website. U.S. IMPORTANT SAFETY INFORMATION Limitation of Use: LIVMARLI is not for use in PFIC type 2 patients who have a severe defect in the bile salt export pump (BSEP) protein. LIVMARLI can cause side effects, including: Liver injury. Changes in certain liver tests are common in patients with Alagille syndrome and PFIC but can worsen during treatment. These changes may be a sign of liver injury. In PFIC, this can be serious or may lead to liver transplant or death. Your healthcare provider should do blood tests and physical exams before starting and during treatment to check your liver function. Tell your healthcare provider right away if you get any signs or symptoms of liver problems, including nausea or vomiting, skin or the white part of the eye turns yellow, dark or brown urine, pain on the right side of the stomach (abdomen), bloating in your stomach area, loss of appetite or bleeding or bruising more easily than normal. Stomach and intestinal (gastrointestinal) problems. LIVMARLI can cause stomach and intestinal problems, including diarrhea and stomach pain. Your healthcare provider may advise you to monitor for new or worsening stomach problems including stomach pain, diarrhea, blood in your stool or vomiting. Tell your healthcare provider right away if you have any of these symptoms more often or more severely than normal for you. A condition called Fat Soluble Vitamin (FSV) Deficiency caused by low levels of certain vitamins (vitamin A, D, E, and K) stored in body fat is common in patients with Alagille syndrome and PFIC but may worsen during treatment. Your healthcare provider should do blood tests before starting and during treatment and may monitor for bone fractures and bleeding which have been reported as common side effects. LIVMARLI is available in oral solution or tablet formulations and is taken by mouth 30 minutes before a meal. For Alagille syndrome, LIVMARLI is taken one time each day in the morning. For PFIC, LIVMARLI is taken two times each day. If you take the oral solution, use the oral dosing dispenser to measure your dose. US Prescribing Information EU SmPC Canadian Product Monograph About Mirum Pharmaceuticals, Inc. Mirum Pharmaceuticals, Inc. is a biopharmaceutical company dedicated to transforming the treatment of rare diseases affecting children and adults. Mirum has three approved medications: LIVMARLI® (maralixibat) oral solution/LIVMARLI® (maralixibat) tablets, CHOLBAM® (cholic acid) capsules, and CTEXLI™ (chenodiol) tablets. LIVMARLI, an IBAT inhibitor, is approved for the treatment of two rare liver diseases affecting children and adults. It is approved for the treatment of cholestatic pruritus in patients with Alagille syndrome in the U.S. (three months and older), in Europe (two months and older), and in other regions globally. It is also approved in the U.S. in cholestatic pruritus in PFIC patients 12 months of age and older; in Europe, it is approved for patients with PFIC three months of age and older. Mirum has initiated the Phase 3 EXPAND study, a label expansion opportunity for LIVMARLI in additional settings of cholestatic pruritus. CHOLBAM is FDA-approved for the treatment of bile acid synthesis disorders due to single enzyme deficiencies and adjunctive treatment of peroxisomal disorders in patients who show signs or symptoms of liver disease. CTEXLI is FDA-approved for the treatment of cerebrotendinous xanthomatosis (CTX) in adults. Mirum's late-stage pipeline includes two investigational treatments for several rare diseases. Volixibat, an IBAT inhibitor, is being evaluated in two potentially registrational studies including the Phase 2 VISTAS study for primary sclerosing cholangitis (PSC) and Phase 2b VANTAGE study for primary biliary cholangitis. Volixibat has been granted Breakthrough Therapy Designation for the treatment of cholestatic pruritus in patients with PBC. Mirum is also planning for a Phase 2 study evaluating MRM-3379, a PDE4D inhibitor for the treatment of Fragile X syndrome, a rare genetic neurocognitive disorder. To learn more about Mirum, visit mirumpharma.com and follow Mirum on Facebook, LinkedIn, Instagram and Twitter (X). Forward-Looking Statements Statements contained in this press release regarding matters that are not historical facts are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include statements regarding, among other things, the anticipated presentations of data from Mirum’s LIVMARLI and volixibat studies, including the VANTAGE study of volixibat in patients with pruritus due to PBC. Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Words such as “will,” “could,” “can,” “would,” “potential,” “hope,” “opportunity,” and similar expressions are intended to identify forward-looking statements. These forward-looking statements are based upon Mirum’s current expectations and involve assumptions that may never materialize or may prove to be incorrect. Actual results could differ materially from those anticipated in such forward-looking statements as a result of various risks and uncertainties, which include, without limitation, risks and uncertainties associated with Mirum’s business in general, the impact of macroeconomic and geopolitical developments, and the other risks described in Mirum’s Annual Report on Form 10-K for the year ended December 31, 2024, filed with the U.S. Securities and Exchange Commission on February 26, 2025, and subsequent filings with the U.S. Securities and Exchange Commission, which are available at www.sec.gov. All forward-looking statements contained in this press release speak only as of the date on which they were made and are based on management’s assumptions and estimates as of such date. Mirum undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made, except as required by law. Media Contact: Erin Murphy media@mirumpharma.com Investor Contact: Andrew McKibben ir@mirumpharma.com