Our study rationale is based on:
1. Tuberculosis Preventive Treatment (TPT) is given to healthy people and needs to be safe;
2. Tuberculosis Preventive Treatment (TPT) with shorter regimens are superior with respect to acceptance, completion, and costs;
3. 4 months of Rifampin 10mg/kg (4R10) is the safest regimen, but is completed by <80% of patients;
4. The safety of 2 months of Rifampin 20mg/kg (2R20) is similar to that of 4 months of Rifampin 10mg/kg (4R10), but completion is a concern;
5. 1-month regimens have promising efficacy;
6. Safety and tolerability must be carefully assessed with comparisons to 4 months of Rifampin 10mg/kg (4R10), and head-to-head with each other.
OBJECTIVES: The investigator will use a Bayesian adaptive Phase 2 randomized open-label trial design to test at least three experimental Tuberculosis Preventive Treatment (TPT) regimens to identify at least one regimen of ≤2 months duration that has non-inferior safety, completion, and tolerability in adults and children relative to the reference Tuberculosis Preventive Treatment (TPT) regimen. The shortest, safest, and best tolerated regimen identified in this Phase 2 trial will be tested for effectiveness and efficacy in a Phase 3 trial.
Specific Tuberculosis Preventive Treatment (TPT) regimens (All are daily and self-administered) Reference: Rifampin at a dose of 10 mg/kg/day for 4 months (4R10); Experimental: 1) Rifampin at 20 mg/kg/day for 2 months (2R20); (2) one month Levofloxacin and Rifapentine (1LP). At a later stage a 3rd experimental regimen will be selected and added: one another novel 1-2-month regimen identified from pre-clinical and clinical studies. When selected, this will be explained fully including preliminary data on safety and efficacy in an amended protocol and consent - which will be submitted for ethics and regulatory approval at that time).

Start Date01 Feb 2025

Sponsor / Collaborator

Mcgill University Health Centre

[+1]

NCT06253715 / Not yet recruitingPhase 3IIT

Shortened Regimen for Drug-susceptible TB in Children

While drug-susceptible tuberculosis (TB) disease in children currently requires four to six months of treatment, most children may be able to be cured with a shorter treatment of more powerful drugs. Shorter treatment may be easier for children to tolerate and finish as well as ease caregiver strain from managing treatment side effects and supporting children over many months. The primary objective of this study is to evaluate if a 2-month regimen (including isoniazid (H), rifapentine (P), pyrazinamide (Z) and moxifloxacin (M)) is as safe and effective as a 4- to 6-month regimen (isoniazid, rifampicin (R), pyrazinamide, ethambutol (E)) in curing drug-susceptible TB disease in children under 10 years old. The study is also evaluating the safety of the HPZM in children with and without HIV.

Start Date13 Dec 2024

Sponsor / Collaborator

The Johns Hopkins University

ChiCTR2400089027 / SuspendedPhase 4IIT

Study on short course treatment regimens for tuberculosis infection containing isoniazid and rifapentine: A multi-arm, multi-stage, adaptive, multi-centre, randomized, controlled, open-label, non-inferiority trial

Start Date01 Oct 2024

Sponsor / Collaborator-

100 Clinical Results associated with Rifapentine

100 Translational Medicine associated with Rifapentine

100 Patents (Medical) associated with Rifapentine

620

Literatures (Medical) associated with Rifapentine

01 Jan 2025·EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES

Population pharmacokinetics of cyclosporine A in hematopoietic stem cell transplant recipients: A systematic review

Review

Author: Yang, Yunyun ; Xue, Qian ; Wang, Zhuo ; Wang, Zhuo ; Quan, Danni ; Zhu, Yiping ; Xia, Lin ; Chai, Yuhui

Cyclosporine A (CsA) is the prevalent immunosuppressive drug for preventing and treating graft-versus-host disease after hematopoietic stem cell transplantation (HSCT) in both children and adults. Population pharmacokinetic studies have identified covariates, owing to their large between-subject variability, facilitating individualized therapy. However, no review has summarized CsA's population pharmacokinetics post-HSCT. This systematic review aims to synthesize population pharmacokinetic studies of CsA therapy in HSCT recipients and explore influencing covariates. Thirteen studies, comprising five involving children, one involving both children and adults and seven involving adults, were included. The median apparent clearance in children surpassed that in adults, influenced notably by hematocrit level and body. While liver function impacted clearance, the effect was insignificant. Co-administration with cytochrome P450 enzyme inhibitors (e.g., fluconazole (Diflucan) or itraconazole) decreased drug clearance, whereas inducers (e.g., rifampicin or rifapentine) increased it. Area under the curve analysis is recommended over trough concentration-based monitoring for HSCT recipients on CsA. In cases of insufficient trough concentration, additional sampling points are recommended for improved area under the curve estimation. Further studies are needed to evaluate the optimal sampling points required for the area under the curve estimation in CsA therapy post-HSCT.

01 Dec 2024·AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE

Pyrazinamide Safety, Efficacy, and Dosing for Treating Drug-Susceptible Pulmonary Tuberculosis: A Phase 3, Randomized Controlled Clinical Trial

Article

Author: Kurbatova, Ekaterina V. ; Dorman, Susan E. ; Velásquez, Gustavo E. ; Chaisson, Richard E. ; Brown, Nicole E. ; Nahid, Payam ; Velásquez, Gustavo E ; Whitworth, William C ; Zhang, Nan ; Phillips, Patrick P. J. ; Chang, Vincent K. ; Chaisson, Richard E ; Savic, Radojka M ; Dooley, Kelly E ; Savic, Radojka M. ; Nsubuga, Pheona ; Engle, Melissa L. ; Sizemore, Erin ; Dooley, Kelly E. ; Carr, Wendy ; Engle, Melissa L ; Dorman, Susan E ; Xu, Ava Y ; Nhung, Nguyen Viet ; Swindells, Susan ; Chang, Vincent K ; Bryant, Kia ; Kurbatova, Ekaterina V ; Phillips, Patrick Pj ; Xu, Ava Y. ; Whitworth, William C. ; Brown, Nicole E ; Diacon, Andreas

Rationale: Optimizing pyrazinamide dosing is critical to improve treatment efficacy while minimizing toxicity during tuberculosis treatment. Study 31/AIDS Clinical Trials Group A5349 represents the largest phase 3 randomized controlled therapeutic trial to date for such an investigation. Objectives: We sought to report pyrazinamide pharmacokinetic parameters, risk factors for lower pyrazinamide exposure, and relationships between pyrazinamide exposure and efficacy and safety outcomes. We aimed to determine pyrazinamide dosing strategies that optimize risks and benefits. Methods: We analyzed pyrazinamide steady-state pharmacokinetic data using population nonlinear mixed-effects models. We evaluated the contribution of pyrazinamide exposure to long-term efficacy using parametric time-to-event models and safety outcomes using logistic regression. We evaluated optimal dosing with therapeutic windows targeting ≥95% durable cure and safety within the observed proportion of the primary safety outcome. Measurements and Main Results: Among 2,255 participants with 6,978 plasma samples, pyrazinamide displayed sevenfold exposure variability (151-1,053 mg·h/L). Body weight was not a clinically relevant predictor of drug clearance and thus did not justify the need for weight-banded dosing. Both clinical and safety outcomes were associated with pyrazinamide exposure, resulting in therapeutic windows of 231-355 mg · h/L for the control and 226-349 mg·h/L for the rifapentine-moxifloxacin regimen. Flat dosing of pyrazinamide at 1,000 mg would have permitted an additional 13.1% (n = 96) of participants allocated to the control and 9.2% (n = 70) to the rifapentine-moxifloxacin regimen dosed within the therapeutic window, compared with the current weight-banded dosing. Conclusions: Flat dosing of pyrazinamide at 1,000 mg/d would be readily implementable and could optimize treatment outcomes in drug-susceptible tuberculosis. Clinical trial registered with www.clinicaltrials.gov (NCT02410772).

15 Nov 2024·The Journal of infectious diseases

Assessment for Antibodies to Rifapentine and Isoniazid in Persons Developing Flu-Like Reactions During Treatment of Latent Tuberculosis Infection

Article

Author: Sterling, Timothy R ; Moro, Ruth N ; Mehaffy, Carolina ; Dobos, Karen M ; Phillips, Elizabeth ; Borisov, Andrey S ; De, Prithwiraj

Abstract:

Background:

Flu-like reactions can occur after exposure to rifampin, rifapentine, or isoniazid. Prior studies have reported the presence of antibodies to rifampin, but associations with underlying pathogenesis are unclear.

Methods:

We evaluated PREVENT TB study participants who received weekly isoniazid plus rifapentine for 3 months (3HP) or daily isoniazid for 9 months (9H) as treatment for Mycobacterium tuberculosis infection. Flu-like reaction was defined as a grade ≥2 of any of flu-like symptoms. Controls (3HP or 9H) did not report flu-like reactions. We developed a competitive enzyme-linked immunosorbent assays (ELISA) to detect antibodies against rifapentine, isoniazid, rifampin, and rifapentine metabolite.

Results:

Among 128 participants, 69 received 3HP (22 with flu-like reactions; 47 controls) and 59 received 9H (12 with flu-like reactions; 47 controls). In participants receiving 3HP, anti-rifapentine IgG was identified in 2 of 22 (9%) participants with flu-like reactions and 6 of 47 (13%) controls (P = .7), anti-isoniazid IgG in 2 of 22 (9%) participants with flu-like reactions and 4 of 47 (9%) controls (P = .9). Among participants receiving 9H, IgG and IgM anti-isoniazid antibodies were each present in 4 of 47 (9%) controls, but none among participants with flu-like reactions; anti-rifapentine IgG antibodies were not present in any participants with flu-like reactions or controls.

Conclusions:

We detected anti-rifapentine, anti-isoniazid, and anti-rifapentine metabolite antibodies, but the proportions of participants with antibodies were low, and did not differ between participants with flu-like reactions and those without such reactions. This suggests that flu-like reactions associated with 3HP and 9H were not antibody mediated.

Clinical Trials Registration:

NCT00023452.

News (Medical) associated with Rifapentine

22 Oct 2024

·www.biospace.com

Gilead to Present Latest Research Across Key Liver Disease Indication at the American Association for the Study of Liver Disease (AASLD) Meeting 2024

- Key Insights from Viral Hepatitis, PBC, and MASH/Fibrosis Studies Highlight Gilead’s Ongoing Commitment to Advancing Life-Changing Liver Disease Research - FOSTER CITY, Calif.--(BUSINESS WIRE)--Gilead Sciences, Inc. (Nasdaq: GILD) today announced new research to be presented at The Liver Meeting ® 2024, hosted by the American Association for the Study of Liver Diseases (AASLD) from November 15-19 in San Diego, Calif. More than 40 abstracts will be presented with key data, including 11 abstracts reporting new data on primary biliary cholangitis (PBC). The data will include findings from the RESPONSE trial that demonstrate the efficacy and safety pro Livdelzi ® (seladelpar) in people living with PBC and compensated cirrhosis. Additionally, data will be presented on the effects of Livdelzi on pruritus (chronic itching), a symptom that has significant impact on the quality of life of people living with PBC, along with interim long-term efficacy and safety results from the ongoing ASSURE study. Beyond PBC, Gilead will be presenting an interim analysis of the Phase 3 MYR301 study, which is evaluating people living with hepatitis Delta virus (HDV) who received bulevirtide monotherapy (2 mg for 144 weeks; 10 mg for 144 weeks; or 10 mg for 96 weeks) for chronic HDV and have been off treatment for 48 weeks. The study is evaluating whether or not patients treated with bulevirtide monotherapy for 2-3 years maintained virological and biochemical responses one year after stopping treatment. An additional 144-week analysis of patient-reported outcomes for individuals treated with bulevirtide 2 mg will also be presented, adding to the wealth of long-term data for the treatment for chronic HDV. “We’re excited to share our latest research at The Liver Meeting, as we push the boundaries of what’s possible in liver disease treatment. The breadth of this research reflects Gilead’s unwavering dedication to advancing life-changing science and shaping healthier futures for people living with liver disease,” said Anu Osinusi, Vice President of Clinical Development for Hepatitis, Respiratory and Emerging Viruses, Gilead Sciences. “The depth and range of our data, spanning both viral and inflammatory liver diseases, underscores our commitment to making a meaningful impact at every stage of a person’s journey in liver disease. Our goals go far beyond treatment alone—our work spans awareness, education, screening, diagnosis, and long-term care, all intending to address unmet needs and enhance treatment outcomes.” Gilead will also present hepatitis C virus (HCV) data which will include safety and tolerability outcomes for Epclusa ® (velpatasvir/sofosbuvir) in pregnant individuals with chronic HCV (the STORC study). As a special population that is often excluded from clinical research, these results may help clinicians better support pregnant people living with HCV, which in turn may reduce the risk of transmission to infants. Furthermore, real-world findings from the SVR10K study on HCV will be showcased, demonstrating the effects of direct-acting antivirals against all HCV genotypes across diverse regions. Late-breaking data from a Phase 2a open-label study assessing the safety and efficacy of novel combination therapies for chronic hepatitis B virus (HBV) will also be presented by Gilead. Key Abstracts at AASLD 2024: ID Abstract Title PBC 164 Efficacy and Safety of Seladelpar in Patients with PBC and Compensated Cirrhosis in the Phase 3 Placebo-controlled RESPONSE Trial 167 Attenuation, Near Resolution, and Prevention of Pruritis in Patients with PBC Treated with Seladelpar: A Secondary Analysis of Patterns of Pruritis Change in the RESPONSE Trial 4339 Alkaline Phosphatase Changes with Seladelpar Across Subgroups of Primary Biliary Cholangitis Patients in the RESPONSE Trial 4342 Seladelpar and Reductions in Lipids in Patients with Primary Biliary Cholangitis with and without Statin use in the Phase 3 Placebo-controlled RESPONSE Study 4341 Long-term Safety of Seladelpar 10 mg with up to 5 Years of Treatment in Patients with Primary Biliary Cholangitis Primary sclerosing cholangitis (PSC) 151 Associations Between Biomarkers and Magnetic Resonance Imaging-derived ANALI Score in Patients with Primary Sclerosing Cholangitis: Analysis from the Phase 3 PRIMIS Study HDV 1147 Efficacy and Safety of BLV Monotherapy for Chronic Hepatitis Delta: Post Treatment Results through 48 Weeks after the End of Treatment from an Interim Analysis of a Randomized Phase 3 Study MYR301 1193 Patient-reported Outcomes among Patients with Chronic Hepatitis Delta Treated with Bulevirtide 2 mg: A Long-term Analysis of the Phase 3 MYR301 Trial at 144 Weeks 139 Long-term Bulevirtide Monotherapy in Patients with HDV-related Compensated Cirrhosis: Effectiveness, Safety and Clinical Outcomes from the Retrospective Multicenter European Study (SAVE-D) HCV 222 Safety, Tolerability, and Outcomes of Velpatasvir/Sofosbuvir in Treatment of Chronic Hepatitis C Virus during Pregnancy (STORC) 1455 The SVR10K Study: A Real-world Data with Pangenotypic Direct-acting Antivirals across Multiple Diverse Regions 1476 Hepatitis C Treatment Uptake Differs by Gender among a Commercially Insured Population in the United States HBV 1380 Results from a Phase 2a, Open-label Study to Evaluate the Safety and Efficacy of Novel Combination Therapies Containing VIR-2218, Selgantolimod, and Nivolumab for the Treatment of Chronic Hepatitis B 1252 Effectiveness and Safety of Tenofovir Alafenamide in Chronic Hepatitis B Patients with Suboptimal Response to Antiviral Therapy 1337 Characterization of Changes in Noninvasive Fibrosis Markers over 8 Years of Tenofovir-based Treatment in Chronic Hepatitis B Patients Enrolled in Two Phase 3 Trials Nonalcoholic steatohepatitis (NASH)/Fibrosis 1520 Prospective Validation of the Mediterranean Diet Adherence Screener (MEDAS) for Point-of-care Assessment of Diet Quality in Patients with Metabolic Dysfunction-associated Steatotic Liver Disease For more information, including a complete list of abstract titles being presented at the meeting, please visit the AASLD website . In July 2023, the European Commission (EC) granted full Marketing Authorization (MA) for bulevirtide 2 mg for the treatment of adults with chronic HDV and compensated liver disease. Bulevirtide’s conditional MA license in Great Britain was converted to a full MA in August 2023 and a full MA was granted in Switzerland and Australia in 2024. In regions where it 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 has not been approved anywhere. Cilofexor and selgantolimod are investigational compounds and are not approved by the FDA or any other regulatory authority; their safety and efficacy have not been established. Please see below for the U.S. Indications and Important Safety Information, including BOXED WARNINGS, for Epclusa and Livdelzi. U.S. Important Safety Information And Indication for EPCLUSA BOXED WARNING: RISK OF HEPATITIS B VIRUS REACTIVATION IN HCV/HBV COINFECTED PATIENTS Test all patients for evidence of current or prior hepatitis B virus (HBV) infection before initiating treatment with EPCLUSA. HBV reactivation has been reported in HCV/HBV coinfected patients who were undergoing or had completed treatment with HCV direct acting antivirals (DAAs) and were not receiving HBV antiviral therapy. Some cases have resulted in fulminant hepatitis, hepatic failure, and death. Cases have been reported in patients who are HBsAg positive, in patients with serologic evidence of resolved HBV, and also in patients receiving certain immunosuppressant or chemotherapeutic agents; the risk of HBV reactivation associated with treatment with HCV DAAs may be increased in patients taking these other agents. Monitor HCV/HBV coinfected patients for hepatitis flare or HBV reactivation during HCV treatment and post-treatment follow-up. Initiate appropriate patient management for HBV infection as clinically indicated. Contraindications If EPCLUSA is used in combination with ribavirin (RBV), all contraindications, warnings and precautions, in particular pregnancy avoidance, and adverse reactions to RBV also apply. Refer to RBV prescribing information. Warnings and Precautions Serious Symptomatic Bradycardia When Coadministered with Amiodarone: Amiodarone is not recommended for use with EPCLUSA due to the risk of symptomatic bradycardia, particularly in patients also taking beta blockers or with underlying cardiac comorbidities and/or with advanced liver disease. A fatal cardiac arrest was reported in a patient taking amiodarone who was coadministered a sofosbuvir containing regimen. In patients without alternative, viable treatment options, cardiac monitoring is recommended. Patients should seek immediate medical evaluation if they develop signs or symptoms of bradycardia. Risk of Reduced Therapeutic Effect Due to Use with P-gp Inducers and/or Moderate to Strong Inducers of CYP2B6, CYP2C8 or CYP3A4 : Rifampin, St. John’s wort and carbamazepine are not recommended for use with EPCLUSA as they may significantly decrease sofosbuvir and/or velpatasvir plasma concentrations. Adverse Reactions The most common adverse reactions (≥10%, all grades) with EPCLUSA in adults and pediatric patients 6 years of age and older were headache and fatigue; and when used with RBV in adults with decompensated cirrhosis were fatigue, anemia, nausea, headache, insomnia and diarrhea. The most common adverse reactions (≥10%, grade 1 or 2) in pediatric patients less than 6 years of age were vomiting and spitting up the drug. Drug Interactions Coadministration of EPCLUSA is not recommended with topotecan due to increased concentrations of topotecan. Coadministration of EPCLUSA is not recommended with proton-pump inhibitors, phenobarbital, phenytoin, rifabutin, rifapentine, efavirenz, and tipranavir/ritonavir due to decreased concentrations of sofosbuvir and/or velpatasvir. Consult the full Prescribing Information for EPCLUSA for more information on potentially significant drug interactions, including clinical comments. Indication EPCLUSA is indicated for the treatment of adult and pediatric patients 3 years of age and older with chronic hepatitis C virus genotype 1, 2, 3, 4, 5, or 6 infection without cirrhosis or with compensated cirrhosis and in combination with ribavirin for those with decompensated cirrhosis. 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 coadministration with LIVDELZI 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 (eg, 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 are 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 are 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. Indication LIVDELZI is indicated for the treatment of primary biliary cholangitis (PBC) in combination with ursodeoxycholic acid (UDCA) in adults who have 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 of 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). About HDV HDV is considered the most aggressive or severe form of viral hepatitis, associated with more rapid progression towards liver-related death and liver cancer in people with HBV. On average, HDV progresses to cirrhosis within 5 years and to liver cancer within 10 years. Nearly 5% of people who have a chronic infection with HBV are estimated to have HDV, equating to 12-15 million people worldwide. The prevalence of HDV infection is largely underestimated due to lack of universal testing of HBV-positive individuals for HDV. About PBC PBC is a rare, chronic inflammatory liver disease primarily affecting women (1 in 1,000 women over the age of 40 or about 130,000 total people in the U.S.). PBC is characterized by impaired bile flow (known as cholestasis) and the accumulation of toxic bile acids in the liver, leading to inflammation and destruction of the bile ducts within the liver and causing increased levels of alkaline phosphatase (ALP), alanine transaminase (ALT) and gamma-glutamyl transferase (GGT), enzymes found primarily in the liver, as well as total bilirubin. The most common symptoms of PBC are pruritus and fatigue, which can be debilitating for some people. Progression of PBC is associated with an increased risk of liver-related mortality. 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. We have helped to transform hepatitis C from a chronic condition into one that can be cured for millions of people. For people living with hepatitis B or D, our focus on advancing our medicines drives hope that today’s research will turn into tomorrow’s cures. Beyond viral hepatitis, we’re working to deliver advanced treatments for people living with PBC. But our commitment doesn’t stop there. Through our ground-breaking science and collaborative partnerships, we strive to create healthier futures for everyone living with liver disease. We are committed to a future without liver disease. 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 or studies within currently anticipated timelines or at all, and the possibility of unfavorable results from ongoing or additional clinical trials or studies, including those involving Epclusa, Hepcludex (bulevirtide), Livdelzi (seladelpar), cilofexor and selgantolimod (such as the ASSURE, RESPONSE, MYR301, STORC and SVR10K studies); uncertainties relating to regulatory applications and related filing and approval timelines, including the risk that the FDA and other regulatory authorities may not approve bulevirtide for the treatment of HDV, and the risk that any such approvals, if granted, may be subject to significant limitations on use or subject to withdrawal or other adverse actions by the applicable regulatory authority; the possibility that Gilead may make a strategic decision to discontinue development of investigational programs for indications that are currently under evaluation and, as a result, these programs may never be successfully commercialized for the indications currently under evaluation; and any assumptions underlying any of the foregoing. These and other risks, uncertainties and factors are described in detail in Gilead’s Quarterly Report on Form 10-Q for the quarter ended June 30, 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. Epclusa, Hepcludex, Livdelzi, Gilead and the Gilead logo are registered trademarks of Gilead Sciences, Inc., or its related companies. For more information about Gilead, please visit the company’s website at , follow Gilead on Twitter (@Gilead Sciences) or call Gilead Public Affairs at 1-800-GILEAD-5 or 1-650-574-3000. Contacts Meaghan Smith, Media public_affairs@gilead.com Jacquie Ross, Investors investor_relations@gilead.com

Phase 2Clinical ResultDrug ApprovalPhase 3

16 Oct 2024

·www.businesswire.com

ViiV Healthcare Shows More Than 99% Effectiveness in Real-World Studies for Apretude (Cabotegravir Long-Acting), the Only Approved Long-Acting HIV PrEP, in Data Presented at IDWeek 2024

LONDON--( BUSINESS WIRE )--ViiV Healthcare, the global specialist HIV company majority owned by GSK, with Pfizer and Shionogi as shareholders, today announced the presentation of new real-world evidence and implementation data showing the effectiveness, adherence, and quality-of-life improvement of Apretude (cabotegravir long-acting (CAB LA)) for HIV pre-exposure prophylaxis (PrEP). The data will be presented at IDWeek 2024 , being held in Los Angeles, California from 16 – 19 October. Findings from two real-world evidence studies (from OPERA and Trio Health cohorts) showed more than 99% effectiveness of CAB LA for PrEP in nearly 1,300 individuals. In the PILLAR implementation study, reductions were shown in stigma and anxiety among the 200 individuals using the long-acting injectable PrEP option. Harmony P. Garges, M.D., MPH, Chief Medical Officer at ViiV Healthcare, said: “The findings presented at IDWeek 2024 continue to support the strong and sustained effectiveness of Apretude for people in real life, outside the controlled environment of a clinical trial. The results of the studies from OPERA and Trio cohorts add to the growing body of evidence generated over the last three years, showing CAB LA for PrEP is a highly effective option for HIV prevention. We believe long-acting options have the potential to be transformative in increasing uptake among a broad range of people that could benefit from PrEP and are critical to ending the HIV epidemic.” Trio Health cohort shows CAB LA for PrEP’s effectiveness in the real world with zero cases of HIV acquisition during follow-up 1 New data from the Trio Health cohort shows the real-world use of CAB LA for PrEP in preventing HIV acquisition and adherence, among 474 individuals in the U.S. The analysis identified a diverse population of cis- and transgender male and female individuals initiating CAB LA for PrEP from electronic health records between December 2021 through January 2024. Findings from the cohort showed that there were zero HIV diagnoses identified during follow-up among participants taking CAB LA for PrEP. Eighty-three percent persisted on CAB LA for PrEP injections at the time of analysis, and injections were also administered on time for most of the initiators. Of the 396 participants with continuation injections, 33% experienced delays with a median of one delayed injection and median delay of 12 days [IQR: 3-29]. Adherence to CAB LA for PrEP was high, with only 3% of participants experiencing a missed injection. OPERA study highlights high adherence and effectiveness of CAB LA for PrEP 2 Real-world findings from the OPERA study provide insights into injection timing, adherence, and effectiveness among individuals using CAB LA for PrEP in the U.S.. The OPERA study reported findings from a large, diverse U.S. cohort, which included 764 individuals using CAB LA for PrEP, 29% of whom are Black and 29% Hispanic. CAB LA for PrEP was effective in 99.7% of individuals (762 of 764 were not diagnosed with HIV during the follow-up period). There were two cases of HIV (0.3%) observed among the CAB LA for PrEP initiators. These cases could not be directly linked to the regimen due to its discontinuation in one case and inconsistent testing in the other case. Eighty-five percent of individuals taking CAB LA for PrEP had complete initiation of the regimen (i.e. completed their first two initiation injections 60 or less days apart from each other). Sixty-nine percent of these complete initiators received all of their continuation injections on time. While some injection delays were observed among those with complete initiation, most were short, with a median delay of three days from the target date. PILLAR implementation study shows CAB LA for PrEP may help address key PrEP challenges of stigma and anxiety 3 New findings from the PILLAR trial explore the experiences of more than 200 men who have sex with men (MSM) and transgender men (TGM) who initiated CAB LA for PrEP after previous experience with daily oral PrEP. PILLAR is a phase 4 implementation trial assessing the integration of CAB LA for PrEP across 17 U.S. clinics among a diverse population of MSM and TGM, 23% of whom are Black and 39% Hispanic/Latino. The six-month findings from the PILLAR trial showed that individuals taking CAB LA for PrEP reported lower rates of PrEP stigma and anxiety compared to their prior oral PrEP experience, and that the long-acting injectable was feasible, acceptable, and convenient for their life. When recounting their oral PrEP experience at the initiation of the trial, 15% of participants had worried about privacy while taking oral PrEP, 24% felt they had to hide their oral PrEP from others, and 29% expressed worry about stigma from taking oral PrEP. After initiating CAB LA for PrEP and completing surveys at month six of the trial, <1% of participants reported concerns about privacy and only 1% expressed worry about stigma while taking CAB LA for PrEP. Participants who completed interviews noted CAB LA for PrEP reduced the stress and fear of missing a PrEP dose, while offering confidence of protection from HIV. While 45% of participants reported injection site reactions (ISRs), 86% of participants returned to daily activities the same day and few reported being bothered by injection pain (8%). These individuals who had been initially bothered by injection pain reported that pain decreased over subsequent injections. CAB LA for PrEP demonstrated high levels of acceptability among users, with mean acceptability scores increasing from 4.4 at baseline (SD: 0.69) to 4.6 at six months (SD: 0.61), with interviewees noting that CAB LA for PrEP was convenient for their life. This positive experience was supported by flexible clinic scheduling, transportation assistance, and the use of virtual appointments, all of which were identified as valuable facilitators of adherence. These studies demonstrate ViiV Healthcare's commitment to generating robust real-world evidence for CAB LA for PrEP, furthering the study of its implementation, and advancing the understanding of its impact on diverse communities who can benefit from HIV prevention. Further research will continue to explore the long-term benefits of CAB LA for PrEP and optimise its use. APRETUDE (cabotegravir) extended-release injectable suspension P rofessional Indication and Important Safety Information INDICATION APRETUDE is indicated for pre-exposure prophylaxis (PrEP) to reduce the risk of sexually acquired HIV-1 infection in adults and adolescents weighing at least 35 kg who are at risk for HIV-1 acquisition. Individuals must have a negative HIV-1 test prior to initiating APRETUDE (with or without an oral lead-in with oral cabotegravir) for HIV-1 PrEP. IMPORTANT SAFETY INFORMATION BOXED WARNING: RISK OF DRUG RESISTANCE WITH USE OF APRETUDE FOR HIV-1 PRE-EXPOSURE PROPHYLAXIS (PrEP) IN UNDIAGNOSED HIV-1 INFECTION Individuals must be tested for HIV-1 infection prior to initiating APRETUDE or oral cabotegravir, and with each subsequent injection of APRETUDE, using a test approved or cleared by the FDA for the diagnosis of acute or primary HIV-1 infection. Drug-resistant HIV-1 variants have been identified with use of APRETUDE by individuals with undiagnosed HIV-1 infection. Do not initiate APRETUDE for HIV-1 PrEP unless negative infection status is confirmed. Individuals who acquire HIV-1 while receiving APRETUDE for PrEP must transition to a complete HIV-1 treatment regimen. CONTRAINDICATIONS Do not use APRETUDE in individuals: with unknown or positive HIV-1 status with previous hypersensitivity reaction to cabotegravir receiving carbamazepine, oxcarbazepine, phenobarbital, phenytoin, rifampin, and rifapentine WARNINGS AND PRECAUTIONS Comprehensive Management to Reduce the Risk of HIV-1 Infection: Use APRETUDE as part of a comprehensive prevention strategy, including adherence to the administration schedule and safer sex practices, including condoms, to reduce the risk of sexually transmitted infections (STIs). APRETUDE is not always effective in preventing HIV-1 acquisition. Risk for HIV-1 acquisition includes, but is not limited to, condomless sex, past or current STIs, self-identified HIV risk, having sexual partners of unknown HIV-1 viremic status, or sexual activity in a high prevalence area or network. Inform, counsel, and support individuals on the use of other prevention measures (e.g., consistent and correct condom use; knowledge of partner[s] HIV-1 status, including viral suppression status; regular testing for STIs) Use APRETUDE only in individuals confirmed to be HIV-1 negative. HIV-1 resistance substitutions may emerge in individuals with undiagnosed HIV-1 infection who are taking only APRETUDE, because APRETUDE alone does not constitute a complete regimen for HIV-1 treatment. Prior to initiating APRETUDE, ask seronegative individuals about recent (in past month) potential exposure events and evaluate for current or recent signs or symptoms consistent with acute HIV-1 infection (e.g., fever, fatigue, myalgia, skin rash). If recent (<1 month) exposures to HIV-1 are suspected or clinical symptoms consistent with acute HIV-1 infection are present, use a test approved or cleared by the FDA as an aid in the diagnosis of acute HIV-1 infection When using APRETUDE, HIV-1 testing should be repeated prior to each injection and upon diagnosis of any other STIs Additional HIV testing to determine HIV status is needed if an HIV-1 test indicates possible HIV-1 infection or if symptoms consistent with acute HIV-1 infection develop following an exposure event. If HIV-1 infection is confirmed, then transition the individual to a complete HIV-1 treatment Counsel individuals without HIV-1 to strictly adhere to the recommended dosing and testing schedule for APRETUDE Potential Risk of Resistance with APRETUDE: There is a potential risk of developing resistance to APRETUDE if an individual acquires HIV-1 either before, while taking, or following discontinuation of APRETUDE. To minimize this risk, it is essential to clinically reassess individuals for risk of HIV-1 acquisition and to test before each injection to confirm HIV-1–negative status. Individuals who are confirmed to have HIV-1 infection must transition to a complete HIV-1 treatment. If individuals at continuing risk of HIV-1 acquisition discontinue APRETUDE, alternative forms of PrEP should be considered and initiated within 2 months of the final injection of APRETUDE Long-Acting Properties and Potential Associated Risks with APRETUDE: Residual concentrations of cabotegravir may remain in the systemic circulation of individuals for prolonged periods (up to 12 months or longer). Take the prolonged-release characteristics of cabotegravir into consideration and carefully select individuals who agree to the required every-2-month injection dosing schedule because non-adherence or missed doses could lead to HIV-1 acquisition and development of resistance Hypersensitivity Reactions: Serious or severe hypersensitivity reactions have been reported in association with other integrase inhibitors and could occur with APRETUDE Discontinue APRETUDE immediately if signs or symptoms of hypersensitivity reactions develop. Clinical status, including liver transaminases, should be monitored and appropriate therapy initiated Hepatotoxicity: Hepatotoxicity has been reported in a limited number of individuals receiving cabotegravir with or without known pre-existing hepatic disease or identifiable risk factors Clinical and laboratory monitoring should be considered and APRETUDE should be discontinued if hepatotoxicity is suspected and individuals managed as clinically indicated Depressive Disorders: Depressive disorders (including depression, depressed mood, major depression, persistent depressive disorder, suicidal ideation or attempt) have been reported with APRETUDE Promptly evaluate patients with depressive symptoms Risk of Reduced Drug Concentration of APRETUDE Due to Drug Interactions: The concomitant use of APRETUDE and other drugs may result in reduced drug concentration of APRETUDE Refer to the full Prescribing Information for steps to prevent or manage these possible and known significant drug interactions, including dosing recommendations. Consider the potential for drug interactions prior to and during use of, and after discontinuation of APRETUDE; review concomitant medications during use of APRETUDE ADVERSE REACTIONS The most common adverse reactions (incidence ≥1%, all grades) with APRETUDE were injection site reactions, diarrhea, headache, pyrexia, fatigue, sleep disorders, nausea, dizziness, flatulence, abdominal pain, vomiting, myalgia, rash, decreased appetite, somnolence, back pain, and upper respiratory tract infection. DRUG INTERACTIONS Refer to the full Prescribing Information for important drug interactions with APRETUDE Drugs that induce UGT1A1 may significantly decrease the plasma concentrations of cabotegravir USE IN SPECIFIC POPULATIONS Lactation: Assess the benefit-risk of using APRETUDE to the infant while breastfeeding due to the potential for adverse reactions and residual concentrations in the systemic circulation for up to 12 months or longer after discontinuation Pediatrics: Not recommended in individuals weighing less than 35 kg About ViiV Healthcare ViiV Healthcare is a global specialist HIV company established in November 2009 by GSK (LSE: GSK) and Pfizer (NYSE: PFE) dedicated to delivering advances in treatment and care for people living with HIV and for people who are at risk of acquiring HIV. Shionogi became a ViiV shareholder in October 2012. The company’s aims are to take a deeper and broader interest in HIV and AIDS than any company has done before and take a new approach to deliver effective and innovative medicines for HIV treatment and prevention, as well as support communities affected by HIV. For more information on the company, its management, portfolio, pipeline, and commitment, please visit viivhealthcare.com. About GSK GSK is a global biopharma company with a purpose to unite science, technology, and talent to get ahead of disease together. Find out more at gsk.com. Cautionary statement regarding forward-looking statements GSK cautions investors that any forward-looking statements or projections made by GSK, including those made in this announcement, are subject to risks and uncertainties that may cause actual results to differ materially from those projected. Such factors include, but are not limited to, those described under Item 3.D “Risk factors” in GSK’s Annual Report on Form 20-F for 2023, and GSK’s Q2 Results for 2024. Registered in England & Wales: GSK plc No. 3888792 ViiV Healthcare Limited No. 06876960 Registered Office: 79 New Oxford Street London WC1A 1DG ViiV Healthcare Limited GSK Medicines Research Centre Gunnels Wood Road, Stevenage United Kingdom SG1 2NY References 1. M Ramgopal, et al. Real-world use of cabotegravir long-acting for pre-exposure prophylaxis: Data from Trio Health cohort. Presented at the Infectious Disease society of America (IDSA) IDWeek™ 2024, 16-19 October, Los Angeles, CA. 2. R Hsu, et al. Cabotegravir Long-Acting for Pre-Exposure Prophylaxis (PrEP): Real World Data on On-Time Dosing, HIV Testing and HIV Acquisition from the OPERA Cohort. Presented at the Infectious Disease society of America (IDSA) IDWeek™ 2024. October 2024. 3. H. Holder, et al. Patient Experiences at Month 6 after Initiation of Cabotegravir Long-Acting (CAB LA) for PrEP in the First Male Gender Concordant Implementation Science Trial (PILLAR) in the US. Presented at the Infectious Disease society of America (IDSA) IDWeek™ 2024. October 2024.

Clinical ResultPhase 3

28 Mar 2024

·www.biospace.com

FDA Expands Indication for Gilead's Vemlidy (Tenofovir Alafenamide) to Treat Chronic HBV Infection in Pediatric Patients as Young as Six

Efficacy and Safety Pro Once-Daily Vemlidy Demonstrated in Children Six Years of Age (Weighing at Least 25kg) and Older FOSTER CITY, Calif.--(BUSINESS WIRE)-- Gilead Sciences, Inc. (Nasdaq: GILD) today announced that the U.S. Food and Drug Administration (FDA) has approved the supplemental new drug application (sNDA) for Vemlidy® (tenofovir alafenamide) 25 mg tablets as a once-daily treatment for chronic hepatitis B virus (HBV) infection in pediatric patients six years of age and older and weighing at least 25 kg with compensated liver disease. Vemlidy is a targeted prodrug of tenofovir that was approved by the FDA in 2016 as a once-daily treatment for adults with chronic HBV infection with compensated liver disease. In 2022, the FDA approved Vemlidy for the treatment of chronic HBV infection in pediatric patients 12 years of age and older with compensated liver disease. Vemlidy is recommended as a preferred or first-line treatment for adults with chronic HBV with compensated liver disease by the American Association for the Study of Liver Diseases (AASLD) and European Association for the Study of the Liver (EASL) guidelines. “Chronic hepatitis B can have a significant and lasting impact on the health of children. If left untreated, hepatitis B can lead to liver cirrhosis and liver cancer,” said Chaun-Hao Lin, MD, Associate Professor of Clinical Pediatrics Krek School of Medicine of USC. “As a clinician, I am well aware of the critical importance of promptly treating this disease to avoid possible complications and liver damage. The clinical trial demonstrated that tenofovir alafenamide may represent an effective treatment option for children as young as six years old affected by this chronic disease.” Vemlidy’s approval in this pediatric patient population is supported by Week 96 data from a Phase 2 clinical trial (Trial 1092) comparing treatment with Vemlidy 25 mg to placebo among 18 treatment-naïve and treatment-experienced patients aged 6 to less than 12 years weighing at least 25 kg (Cohort 2, Group 1). Participants in the Vemlidy group and in the placebo group who switched to open-label Vemlidy after Week 24 demonstrated progressive increases in the rates of virological suppression through Week 96 overall and within both study cohorts (children and adolescents). “The expanded indication for Vemlidy for the treatment of children as young as six years old is a testament to the safety, tolerability and efficacy pro this therapy,” said Frank Duff, MD, Senior Vice President, Virology Therapeutic Area Head, Gilead Sciences. “Effective and tolerable options for children require our best science and a dedicated focus. The work of our Gilead Pediatric Center of Excellence is responsible for coordinating pediatric clinical trials for treatments for cancer, HIV, hepatitis B, and COVID-19 and we will continue our research to help address unmet treatment needs for children.” Vemlidy has a boxed warning in its product label regarding post-treatment severe acute exacerbation of hepatitis B. See below for important safety information. U.S. IMPORTANT SAFETY INFORMATION 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. Indication 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. About the 1092 Study Study 1092 is an ongoing Phase 2 clinical trial that randomized 88 treatment-naïve and treatment-experienced patients with chronic hepatitis B infection between the ages of 12 to less than 18 years weighing at least 35 kg to receive either Vemlidy 25 mg (N=47) or placebo (N=23) and 6 to less than 12 years weighing at least 25 kg to receive either Vemlidy 25 mg (N = 12) or placebo (N=6) once daily. The study met its primary endpoint of percentage of patients with HBV DNA levels below 20 IU/mL at 24 weeks of therapy; overall, 19% (11/59) of patients treated with Vemlidy 25 mg achieved HBV DNA < 20 IU/mL at Week 24 compared to 0% (0/23) of patients treated with placebo. The overall percentage of patients with HBV DNA < 20 IU/mL progressively increased in the Vemlidy 25 mg group relative to the Week 24 time point at both Week 48 (37% [22/59 subjects]) and Week 96 (61.0% [36/59 subjects]). The overall median change from baseline in ALT values for the Vemlidy and placebo-Vemlidy treatment groups, respectively, was -39.5 U/L and -46.5 U/L at Week 96. At 96 weeks, ALT normalization (AASLD criteria) was achieved for 54% of Vemlidy-treated patients and 57% of patients who switched from placebo to Vemlidy. Serum ALT is an enzyme used to monitor liver damage. Importantly, the mean percent changes in bone mineral density from baseline to Week 24 were similar for Vemlidy-treated patients and placebo-treated patients (1.6% (N=48) and 1.9% (N=23) for lumbar spine, and 1.9% (N=50) and 2.0% (N=23) for whole body, respectively). At Week 24, mean changes from baseline BMD Z-scores were 0.01 and -0.07 for the lumbar spine, and -0.04 and -0.04 for whole body, for Vemlidy and placebo groups, respectively. About Hepatitis B Hepatitis B (HBV) is a serious disease that attacks the liver and can cause chronic (lifelong) infection, cirrhosis of the liver, liver cancer, and death in up to a third of patients. Hepatitis B is spread through infected blood or body fluids, sexual contact, injection drug use, or perinatally from mother to child. Early symptoms may include loss of appetite, fever, generalized aches and pains, fatigue, itching, urticaria (hives), and joint pain. The disease is often asymptomatic, which may lead to undiagnosed individuals. Later symptoms may include nausea and vomiting, halitosis (bad breath), dark brown urine, jaundice (yellowing of the skin and eyes), and right-sided abdominal pain (especially with external pressure or palpitation). About Gilead Sciences in Liver Disease For more than 20 years, Gilead has sought to address some of the biggest challenges in liver disease. The company has transformed the trajectory of multiple liver diseases through a relentless pursuit of innovation and pioneering access programs to bring meaningful therapies to people around the world. More work is required, and Gilead is committed to advancing innovative therapeutics to address the most pressing unmet needs in liver disease and overcoming barriers to better care. 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 and cancer. 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 or studies within currently anticipated timelines or at all, and the possibility of unfavorable results from ongoing and additional clinical trials or studies, including those involving Vemlidy; the risk that physicians may not see the benefits of prescribing Vemlidy for the treatment of chronic HBV in pediatric patients; and any assumptions underlying any of the foregoing. 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 is cautioned not to place undue reliance on these forward-looking statements. These and other risks are described in detail in Gilead’s Annual Report on Form 10-K for the year ended December 31, 2023, as filed with the U.S. Securities and Exchange Commission. 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 statement. U.S. Prescribing Information for Vemlidy, including BOXED WARNINGS, is available at Vemlidy, Gilead, and the Gilead logo are registered trademarks of Gilead Sciences, Inc., or its related companies. For more information about Gilead, please visit the company’s website at , follow Gilead on Twitter (@GileadSciences), or call Gilead Public Affairs at 1-800-GILEAD-5 or 1-650-574-3000. View source version on businesswire.com: Contacts Meaghan Smith, Media public_affairs@gilead.com Jacquie Ross, Investors investor_relations@gilead.com Source: Gilead Sciences, Inc. View this news release online at:

Clinical ResultDrug ApprovalPhase 2

100 Deals associated with Rifapentine

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KEGG	Wiki	ATC	Drug Bank
D00879	Rifapentine	J04AB05	DB01201

R&D Status

Approved

10 top approved records.

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Indication	Country/Location	Organization	Date
Pulmonary Tuberculosis	US	Sanofi-Aventis U.S. LLC	22 Jun 1998
Tuberculosis	CN	Leshan Sanjiu Long March Pharmaceuticals Co. Ltd.	01 Jan 1994

Developing

10 top R&D records.

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Indication	Highest Phase	Country/Location	Organization	Date
Latent Tuberculosis	Phase 3	US	-	01 Jun 2001
Latent Tuberculosis	Phase 3	BR	-	01 Jun 2001
Latent Tuberculosis	Phase 3	CA	-	01 Jun 2001
Latent Tuberculosis	Phase 3	ES	-	01 Jun 2001
HIV Infections	Phase 2	ZA	Sanofi	12 Oct 2019

Clinical Result

Indication

Phase

Evaluation

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Study	Phase	Population	Analyzed Enrollment	Group	Results	Evaluation	Publication Date


NCT00023452 (PREVENT TB, Pubmed \| J Infect Dis)	Phase 3	Latent Tuberculosis	128	Rifapentine (3HP with flu-like reactions)	aadtdahidy(tefqkqdndt) = epquykynpw zvrvmbgmlg (sbajsthdzo )	Negative	15 Nov 2024
				Rifapentine (3HP without flu-like reactions)	aadtdahidy(tefqkqdndt) = cbpnbckzde zvrvmbgmlg (sbajsthdzo )
NCT04094012 (Pubmed \| Clin Microbiol Infect)	Phase 3	Latent Tuberculosis	-	1HP regimen (daily rifapentine plus isoniazid for 28 days)	zybxpodiqr(hrjgeafgfl) = 80.8% [21/26] in 3HP group rfpxfnbqfd (totkgsuhxm ) View more	Positive	10 Jul 2024
				3HP regimen (12 doses of weekly rifapentine plus isoniazid)
NCT03510468 (CTgov)	Phase 1	-	51	Pyridoxine+Tenofovir alafenamide+Rifapentine+Isoniazid (INH)	alytxxdkeu(qhwrqcmwty) = iarwlipmgk jmvgflfnqf (jaywpszmfi, ekqqyrwqdl - whtouvftqr) View more	-	25 Oct 2023
S31/A5349 (Pubmed)	Phase 3	Pulmonary Tuberculosis	-	Rifapentine-moxifloxacin regimen	swgzxceklm(ojwnxnfcpg): absolute difference in unfavorable outcomes = -7.4 (95% CI, -20.8 to 6.0)	Positive	30 Aug 2022
				Control regimen
NCT02410772 (S31/A5349, CTgov)	Phase 3	Pulmonary Tuberculosis	2,516	control (Regimen 1)	hedmiztaon(zphgwlsplk) = sosszjxrvz yeoykjierj (uygebixmcx, ohpkinfyto - gnjxobsgmw)	-	28 Sep 2021
				rifapentine (Regimen 2)	hedmiztaon(zphgwlsplk) = temyqwavop yeoykjierj (uygebixmcx, cnhphphxzg - fdvtuikgyi)
NCT02410772 (Study 31, Pubmed \| Br Dent J)	Phase 3	Tuberculosis	2,516	4-month rifapentine-based regimen with moxifloxacin	tyhsdagwjc(kurvqljxcd) = wijvprntvl nrgzjwcasb (dolmbdafdb )	Positive	06 May 2021
				4-month rifapentine-based regimen without moxifloxacin	tyhsdagwjc(kurvqljxcd) = wzoihxxfbm nrgzjwcasb (dolmbdafdb )
ERS2020	Not Applicable	Latent Tuberculosis Maintenance	88	Rifapentine plus isoniazid (3HP)	yrbtthuwoe(orynalphqr) = AST (aspartate aminotransaminase) elevation <2x upper limit were observed in both regimens rvzpgwlyor (ccirkfhree ) View more	Positive	07 Sep 2020
				Isoniazid (9H)
NCT02430259 (Pubmed \| Clin Microbiol Infect)	Phase 3	Silicosis	513	3RPT/INH	wthnfvlcko(qdyhtarhsv) = ddfpyppcbz cfwcjwifdt (hgyvawivaz ) View more	-	15 Jun 2020
				rifapentine (Observation)	wthnfvlcko(qdyhtarhsv) = qwuvbcwjaw cfwcjwifdt (hgyvawivaz )
NCT01162486 (TBTC S29B, CTgov)	Phase 1	Pulmonary Tuberculosis	37	Rifampin & midazolam (Rifampin Control)	egimfekdoh(dwctpoltbi) = dfpjkqkphz uvchojkbne (cvfzwioctf, gjilxefiat - objeliohjn) View more	-	07 May 2019
				rifapentine & midazolam (RPT 1)	egimfekdoh(dwctpoltbi) = baqlvwtnqr uvchojkbne (cvfzwioctf, rzjjyotxaj - rhapflmaik) View more
NCT02208427 (Pubmed \| Tuberculosis (Edinb))	Phase 3	Latent Tuberculosis	263	3HP	(bkwlyhrhdo) = jmpgxmflhq ibfjbhiokt (fyupxxxkzz ) View more	-	01 Jul 2018
				9H	(bkwlyhrhdo) = xzocnktzfr ibfjbhiokt (fyupxxxkzz )

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