(vutrisiran) Significantly Reduces Mortality and a Range of Important Cardiovascular Events in Patients with ATTR Amyloidosis with Cardiomyopathy: Additional Data from HELIOS-B
CAMBRIDGE, Mass.--(BUSINESS WIRE)-- Alnylam Pharmaceuticals, Inc. (Nasdaq: ALNY), the leading RNAi therapeutics company, today presented the most contemporary analysis of the HELIOS-B Phase 3 study of vutrisiran for the treatment of ATTR amyloidosis with cardiomyopathy (ATTR-CM) as a late-breaking abstract at the Heart Failure 2025 Congress, a scientific congress of the European Society of Cardiology, taking place May 17-20 in Belgrade, Serbia. The results demonstrate that vutrisiran, which rapidly knocks down transthyretin, reduces key cardiovascular (CV) events such as CV hospitalizations, and heart failure (HF) hospitalizations. Additionally, in the analysis, urgent HF visits were reduced by 46% (95% CI: 0.30, 0.98; p = 0.041) in the overall population during the double-blind period, compared to placebo. These CV events often precede all-cause mortality (ACM) and are key indicators of disease progression.
Importantly, results from the November 2024 data cut, including further follow up through up to 42 months, reinforce the primary HELIOS-B analysis showing vutrisiran's effect on ACM, and further demonstrate that vutrisiran reduces CV mortality. Through 42 months, the risk of ACM was reduced by 36% (95% CI: 0.46, 0.88; p = 0.007) and the risk of CV mortality was reduced by 33% (95% CI: 0.47, 0.96; p = 0.038) in the overall population, compared to placebo. For both the primary analysis and the current analysis, vital status through 42 months was ascertained for over 99% of all randomized patients from the HELIOS-B study, underscoring the robustness of the results.
The study was conducted in a contemporary patient population with patients receiving robust background therapy, inclusive of treatment with a TTR stabilizer and SGLT2 inhibitors. The analysis of the HELIOS-B Phase 3 study, including mortality data through up to 42 months, was simultaneously published in JACC.
'From the primary analysis of HELIOS-B, we know that AMVUTTRA profoundly impacts all-cause mortality, while preserving patients' functional capacity and quality of life,' said Pushkal Garg, M.D., Chief Medical Officer of Alnylam. 'These new data—including the impact on mortality, on cardiovascular events and on urgent heart failure visits, the latter of which was reduced by nearly half—add to the story of consistency and magnitude of benefit. I remain impressed by the HELIOS-B results, which are noteworthy given the substantial use of heart failure treatments in the study population, and I believe they continue to reinforce AMVUTTRA as a clinically differentiated, first-line option for patients with ATTR-CM.'
The results from the analysis underscore the rapid and sustained benefits of vutrisiran in treating ATTR-CM across key endpoints:
In a separate presentation on Tuesday, May 20, Alnylam will share findings from a subgroup analysis of HELIOS-B evaluating the impact of vutrisiran on ACM and recurrent CV events among patients identified by investigators as having experienced disease progression while being treated with tafamidis.
Also at the Heart Failure 2025 Congress, Alnylam will present the study design and rationale for TRITON-CM, a Phase 3, randomized, double-blind, study of nucresiran in patients with ATTR-CM. Nucresiran is an investigational next-generation RNAi therapeutic targeting TTR that has been shown to deliver rapid knockdown of TTR greater than 95% with twice-annual dosing in a Phase 1 study. TRITON-CM is an event-driven CV outcomes trial with a primary endpoint of composite ACM and CV events. The study is on track to initiate in the first half of 2025 and will enroll approximately 1,200 patients with wild-type or variant TTR and confirmed cardiomyopathy, including those receiving background stabilizer therapy. Additional details of the study's secondary endpoints and key inclusion and exclusion criteria will be shared on Monday, May 19.
AMVUTTRA ® (vutrisiran) was approved by the U.S. Food and Drug Administration (FDA) and the Brazilian Health Regulatory Agency (ANVISA) for treatment of the cardiomyopathy of wild-type or hereditary transthyretin-mediated amyloidosis in adults. The Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) has adopted a positive opinion recommending the approval of vutrisiran for the same indication. A formal regulatory decision by the European Commission of the EMA is expected by the third quarter of 2025. Vutrisiran is currently under review for the treatment of ATTR-CM by the Japanese Pharmaceuticals and Medical Devices Agency (PMDA). Alnylam remains on track to proceed with additional global regulatory submissions for vutrisiran in 2025 and beyond.
For additional information on Alnylam's presentations at the Heart Failure 2025 Congress, please visit Capella.
Indications and Important Safety Information
Indications Approved by the U.S. FDA
AMVUTTRA ® (vutrisiran) is indicated for the treatment of the:
cardiomyopathy of wild-type or hereditary transthyretin-mediated amyloidosis (ATTR-CM) in adults to reduce cardiovascular mortality, cardiovascular hospitalizations and urgent heart failure visits.
polyneuropathy of hereditary transthyretin-mediated amyloidosis (hATTR-PN) in adults.
Important Safety Information
Reduced Serum Vitamin A Levels and Recommended Supplementation
AMVUTTRA treatment leads to a decrease in serum vitamin A levels.
Supplementation at the recommended daily allowance (RDA) of vitamin A is advised for patients taking AMVUTTRA. Higher doses than the RDA should not be given to try to achieve normal serum vitamin A levels during treatment with AMVUTTRA, as serum vitamin A levels do not reflect the total vitamin A in the body.
Patients should be referred to an ophthalmologist if they develop ocular symptoms suggestive of vitamin A deficiency (e.g., night blindness).
Adverse Reactions
In a study of patients with hATTR-PN, the most common adverse reactions that occurred in patients treated with AMVUTTRA were pain in extremity (15%), arthralgia (11%), dyspnea (7%), and vitamin A decreased (7%).
In a study of patients with ATTR-CM, no new safety issues were identified.
For additional information about AMVUTTRA, please see the full U.S. Prescribing Information (revised March 2025)
About AMVUTTRA ® (vutrisiran)
AMVUTTRA ® (vutrisiran) is an RNAi therapeutic that delivers rapid knockdown of variant and wild-type transthyretin (TTR), addressing the underlying cause of transthyretin (ATTR) amyloidosis. Administered quarterly via subcutaneous injection, vutrisiran is approved and marketed in more than 15 countries for the treatment of the polyneuropathy of hereditary transthyretin-mediated amyloidosis (hATTR-PN) in adults. In Europe, it is administered as a subcutaneous injection once every three months, either by a healthcare professional, or self-administered by patients or their caregivers. Vutrisiran is also in development for the treatment of ATTR amyloidosis with cardiomyopathy (ATTR-CM), which encompasses both wild-type and hereditary forms of the disease.
About ATTR
Transthyretin amyloidosis (ATTR) is an underdiagnosed, rapidly progressive, debilitating and fatal disease caused by misfolded transthyretin (TTR) proteins, which accumulate as amyloid deposits in various parts of the body, including the nerves, heart and gastrointestinal tract. Patients may present with polyneuropathy, cardiomyopathy, or both manifestations of disease. There are two different forms of ATTR – hereditary ATTR (hATTR), which is caused by a TTR gene variant and affects approximately 50,000 people worldwide, and wild-type ATTR (wtATTR), which occurs without a TTR gene variant and impacts an estimated 200,000 – 300,000 people worldwide. 1-4
About RNAi
RNAi (RNA interference) is a natural cellular process of gene silencing that represents one of the most promising and rapidly advancing frontiers in biology and drug development today. Its discovery has been heralded as 'a major scientific breakthrough that happens once every decade or so,' and was recognized with the award of the 2006 Nobel Prize for Physiology or Medicine. By harnessing the natural biological process of RNAi occurring in our cells, a new class of medicines known as RNAi therapeutics is now a reality. Small interfering RNA (siRNA), the molecules that mediate RNAi and comprise Alnylam's RNAi therapeutic platform, function upstream of today's medicines by potently silencing messenger RNA (mRNA) – the genetic precursors – that encode for disease-causing or disease pathway proteins, thus preventing them from being made. This is a revolutionary approach with the potential to transform the care of patients with genetic and other diseases.
About Alnylam Pharmaceuticals
Alnylam (Nasdaq: ALNY) has led the translation of RNA interference (RNAi) into a whole new class of innovative medicines with the potential to transform the lives of people afflicted with rare and prevalent diseases with unmet need. Based on Nobel Prize-winning science, RNAi therapeutics represent a powerful, clinically validated approach yielding transformative medicines. Since its founding in 2002, Alnylam has led the RNAi Revolution and continues to deliver on a bold vision to turn scientific possibility into reality. Alnylam has a deep pipeline of investigational medicines, including multiple product candidates that are in late-stage development. Alnylam is executing on its ' Alnylam P 5 x25 ' strategy to deliver transformative medicines in both rare and common diseases benefiting patients around the world through sustainable innovation and exceptional financial performance, resulting in a leading biotech profile. Alnylam is headquartered in Cambridge, MA.
Alnylam Forward-Looking Statements
This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements other than historical statements of fact regarding Alnylam's expectations, beliefs, goals, plans or prospects including, without limitation, Alnylam's expectations regarding the safety and efficacy of vutrisiran for the treatment of ATTR-CM, including the ability of vutrisiran to reduce mortality and cardiovascular events in ATTR-CM patients and to preserve patients' functional capacity and quality of life; the potential for vutrisiran to become a first-line therapy for ATTR-CM; the timing of the initiation of the TRITON-CM study and the number of patients who will be enrolled in that study; the timing of additional global regulatory submissions for vutrisiran; the timing or receipt of any additional regulatory approvals for vutrisiran for ATTR-CM; Alnylam's ability to execute on its ' Alnylam P 5 x25 ' strategy and to deliver transformative medicines in both rare and common diseases benefit patients around the world through sustainable innovation and exceptional financial performance; and Alnylam's ability to have a leading biotech profile should be considered forward-looking statements.
Actual results and future plans may differ materially from those indicated by these forward-looking statements as a result of various important risks, uncertainties and other factors, including, without limitation, risks and uncertainties relating to Alnylam's ability to successfully execute on its ' Alnylam P 5 x25 ' strategy; Alnylam's ability to discover and develop novel drug candidates and delivery approaches and successfully demonstrate the efficacy and safety of its product candidates; the pre-clinical and clinical results for Alnylam's product candidates; actions or advice of regulatory agencies and Alnylam's ability to obtain and maintain regulatory approval for its product candidates, as well as favorable pricing and reimbursement; successfully launching, marketing and selling Alnylam's approved products globally; delays, interruptions or failures in the manufacture and supply of Alnylam's product candidates or its marketed products; obtaining, maintaining and protecting intellectual property; Alnylam's ability to manage its growth and operating expenses through disciplined investment in operations and its ability to achieve a self-sustainable financial profile in the future; Alnylam's ability to maintain strategic business collaborations; Alnylam's dependence on third parties for the development and commercialization of certain products; the outcome of litigation; the potential risk of future government investigations; and unexpected expenditures; as well as those risks more fully discussed in the 'Risk Factors' filed with Alnylam's 2024 Annual Report on Form 10-K filed with the Securities and Exchange Commission (SEC), as may be updated from time to time in Alnylam's subsequent Quarterly Reports on Form 10-Q, and in other filings that Alnylam makes with the SEC. In addition, any forward-looking statements represent Alnylam's views only as of today and should not be relied upon as representing Alnylam's views as of any subsequent date. Alnylam explicitly disclaims any obligation, except to the extent required by law, to update any forward-looking statements.
1 Hawkins PN, Ando Y, Dispenzeri A, et al. Ann Med. 2015;47(8):625-638.
2 Gertz MA. Am J Manag Care. 2017;23(7):S107-S112.
3 Conceicao I, Gonzalez-Duarte A, Obici L, et al. J Peripher Nerv Syst
4 Ando Y, Coelho T, Berk JL, et al. Orphanet J Rare Dis. 2013;8:31.
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Opzelura is also approved in the U.S. for the topical short-term and non-continuous chronic treatment of mild to moderate atopic dermatitis (AD) in non-immunocompromised patients 12 years of age and older whose disease is not adequately controlled with topical prescription therapies, or when those therapies are not advisable. Use of Opzelura in combination with therapeutic biologics, other JAK inhibitors, or potent immunosuppressants, such as azathioprine or cyclosporine, is not recommended. In Europe, Opzelura ® (ruxolitinib) cream 15mg/g is approved for the treatment of non-segmental vitiligo with facial involvement in adults and adolescents from 12 years of age. Incyte has worldwide rights for the development and commercialization of ruxolitinib cream, marketed in the United States as Opzelura. Opzelura and the Opzelura logo are registered trademarks of Incyte. IMPORTANT SAFETY INFORMATION OPZELURA is for use on the skin only. Do not use OPZELURA in your eyes, mouth, or vagina. OPZELURA may cause serious side effects, including: Serious Infections: OPZELURA contains ruxolitinib. Ruxolitinib belongs to a class of medicines called Janus kinase (JAK) inhibitors. JAK inhibitors are medicines that affect your immune system. JAK inhibitors can lower the ability of your immune system to fight infections. Some people have had serious infections while taking JAK inhibitors by mouth, including tuberculosis (TB), and infections caused by bacteria, fungi, or viruses that can spread throughout the body. Some people have been hospitalized or died from these infections. Some people have had serious infections of their lungs while taking OPZELURA. Your healthcare provider should watch you closely for signs and symptoms of TB during treatment with OPZELURA. OPZELURA should not be used in people with an active, serious infection, including localized infections. You should not start using OPZELURA if you have any kind of infection unless your healthcare provider tells you it is okay. You may be at a higher risk of developing shingles (herpes zoster) while using OPZELURA. Increased risk of death due to any reason (all causes): Increased risk of death has happened in people 50 years of age and older who have at least 1 heart disease (cardiovascular) risk factor and are taking a medicine in the class of medicines called JAK inhibitors by mouth. Cancer and immune system problems: OPZELURA may increase your risk of certain cancers by changing the way your immune system works. Lymphoma and other cancers have happened in people taking a medicine in the class of medicines called JAK inhibitors by mouth. People taking JAK inhibitors by mouth have a higher risk of certain cancers including lymphoma and lung cancer, especially if they are a current or past smoker. Some people have had skin cancers while using OPZELURA. Your healthcare provider will regularly check your skin during your treatment with OPZELURA. Limit the amount of time you spend in the sunlight. Wear protective clothing when you are in the sun and use a broad-spectrum sunscreen. Increased risk of major cardiovascular events: Increased risk of major cardiovascular events such as heart attack, stroke, or death have happened in people 50 years of age and older who have at least 1 heart disease (cardiovascular) risk factor and taking a medicine in the class of medicines called JAK inhibitors by mouth, especially in current or past smokers. Blood clots: Blood clots in the veins of your legs (deep vein thrombosis, DVT) or lungs (pulmonary embolism, PE) can happen in some people taking OPZELURA. This may be life-threatening. Blood clots in the vein of the legs (deep vein thrombosis, DVT) and lungs (pulmonary embolism, PE) have happened more often in people who are 50 years of age and older and with at least 1 heart disease (cardiovascular) risk factor taking a medicine in the class of medicines called JAK inhibitors by mouth. Low blood cell counts: OPZELURA may cause low platelet counts (thrombocytopenia), low red blood cell counts (anemia), and low white blood cell counts (neutropenia). If needed, your healthcare provider will do a blood test to check your blood cell counts during your treatment with OPZELURA and may stop your treatment if signs or symptoms of low blood cell counts happen. Cholesterol increases: Cholesterol increase has happened in people when ruxolitinib is taken by mouth. Tell your healthcare provider if you have high cholesterol or triglycerides. Before starting OPZELURA, tell your healthcare provider if you: have an infection, are being treated for one, or have had an infection that does not go away or keeps coming back have diabetes, chronic lung disease, HIV, or a weak immune system have TB or have been in close contact with someone with TB have had shingles (herpes zoster) have or have had hepatitis B or C live, have lived in, or have traveled to certain parts of the country (such as the Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections. These infections may happen or become more severe if you use OPZELURA. Ask your healthcare provider if you do not know if you have lived in an area where these infections are common. think you have an infection or have symptoms of an infection such as: fever, sweating, or chills, muscle aches, cough or shortness of breath, blood in your phlegm, weight loss, warm, red, or painful skin or sores on your body, diarrhea or stomach pain, burning when you urinate or urinating more often than usual, feeling very tired have ever had any type of cancer, or are a current or past smoker have had a heart attack, other heart problems, or a stroke have had blood clots in the veins of your legs or lungs in the past have high cholesterol or triglycerides have or have had low white or red blood cell counts are pregnant or plan to become pregnant. It is not known if OPZELURA will harm your unborn baby. There is a pregnancy exposure registry for individuals who use OPZELURA during pregnancy. The purpose of this registry is to collect information about the health of you and your baby. If you become exposed to OPZELURA during pregnancy, you and your healthcare provider should report exposure to Incyte Corporation at 1-855-463-3463 or are breastfeeding or plan to breastfeed. It is not known if OPZELURA passes into your breast milk. Do not breastfeed during treatment with OPZELURA and for about 4 weeks after the last dose. After starting OPZELURA: Call your healthcare provider right away if you have any symptoms of an infection. OPZELURA can make you more likely to get infections or make worse any infections that you have. Get emergency help right away if you have any symptoms of a heart attack or stroke while using OPZELURA, including: discomfort in the center of your chest that lasts for more than a few minutes, or that goes away and comes back severe tightness, pain, pressure, or heaviness in your chest, throat, neck, or jaw pain or discomfort in your arms, back, neck, jaw, or stomach shortness of breath with or without chest discomfort breaking out in a cold sweat nausea or vomiting feeling lightheaded weakness in one part or on one side of your body slurred speech Tell your healthcare provider right away if you have any signs and symptoms of blood clots during treatment with OPZELURA, including: swelling, pain, or tenderness in one or both legs, sudden, unexplained chest or upper back pain, or shortness of breath or difficulty breathing. Tell your healthcare provider right away if you develop or have worsening of any symptoms of low blood cell counts, such as: unusual bleeding, bruising, tiredness, shortness of breath, or fever. Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. The most common side effects of OPZELURA in people treated for atopic dermatitis include: common cold (nasopharyngitis), diarrhea, bronchitis, ear infection, increase in a type of white blood cell (eosinophil) count, hives, inflamed hair pores (folliculitis), swelling of the tonsils (tonsillitis), and runny nose (rhinorrhea). The most common side effects of OPZELURA in people treated for nonsegmental vitiligo include: acne at the application site, itching at the application site, common cold (nasopharyngitis), headache, urinary tract infection, redness at the application site, and fever. These are not all of the possible side effects of OPZELURA. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may also report side effects to Incyte Corporation at 1-855-463-3463. Please see the Full Prescribing Information, including Boxed Warning, and Medication Guide for OPZELURA. INDICATIONS AND USAGE OPZELURA is a prescription medicine used on the skin (topical) for: short-term and non-continuous chronic treatment of mild to moderate eczema (atopic dermatitis) in non-immunocompromised adults and children 12 years of age and older whose disease is not well controlled with topical prescription therapies or when those therapies are not recommended the treatment of a type of vitiligo called nonsegmental vitiligo in adults and children 12 years of age and older The use of OPZELURA along with therapeutic biologics, other JAK inhibitors, or strong immunosuppressants such as azathioprine or cyclosporine is not recommended. It is not known if OPZELURA is safe and effective in children less than 12 years of age with atopic dermatitis or nonsegmental vitiligo. About Incyte Dermatology Incyte's science-first approach and expertise in immunology has formed the foundation of the company. Today, we are building on this legacy as we discover and develop innovative dermatology treatments to bring solutions to patients in need. We strive to identify and develop therapies to modulate immune pathways driving uncontrolled inflammation. Specifically, our efforts in dermatology are focused on a number of immune-mediated dermatologic conditions with a high unmet medical need, including atopic dermatitis, vitiligo, hidradenitis suppurativa, lichen sclerosus, and prurigo nodularis. To learn more, visit the Dermatology section of About Incyte A global biopharmaceutical company on a mission to Solve On., Incyte follows the science to find solutions for patients with unmet medical needs. Through the discovery, development and commercialization of proprietary therapeutics, Incyte has established a portfolio of first-in-class medicines for patients and a strong pipeline of products in Oncology and Inflammation & Autoimmunity. Headquartered in Wilmington, Delaware, Incyte has operations in North America, Europe and Asia. For additional information on Incyte, please visit or follow us on social media: LinkedIn, X, Instagram, Facebook, YouTube. Incyte Forward-Looking Statements Except for the historical information set forth herein, the matters set forth in this press release, including statements regarding the potential for ruxolitinib cream to provide a successful treatment option for pediatric patients with AD; Incyte's plans to work with FDA; and Incyte's expectations with regard to the PDUFA date for its sNDA and regulatory approval, contain predictions, estimates, and other forward-looking statements. These forward-looking statements are based on our current expectations and are subject to risks and uncertainties that may cause actual results to differ materially, including unanticipated developments in and risks related to: unanticipated delays; further research and development and the results of clinical trials possibly being unsuccessful or insufficient to meet applicable regulatory standards or warrant continued development; the ability to enroll sufficient numbers of subjects in clinical trials and the ability to enroll subjects in accordance with planned schedules; determinations made by the FDA and other regulatory agencies; the efficacy or safety of our products; the acceptance of our products in the marketplace; market competition; unexpected variations in the demand for our products and the products of our collaboration partners; the effects of announced or unexpected price regulation or limitations on reimbursement or coverage for our products; sales, marketing, manufacturing, and distribution requirements, including our ability to successfully commercialize and build commercial infrastructure for newly approved products and any additional new products that become approved; and other risks detailed from time to time in our reports filed with the U.S. Securities and Exchange Commission, including our annual report on Form 10-K and our quarterly report on Form 10-Q for the quarter ended March 31, 2025. We disclaim any intent or obligation to update these forward-looking statements.
