Financial Data and Key Metrics Changes - Total global net product revenues for 2025 were nearly $3 billion, representing an 81% growth compared to 2024, driven by a more than doubling of revenue in the TTR franchise [25][26] - The company achieved GAAP profitability for the full year 2025 and expects to sustain profitability going forward [7][29] - Non-GAAP operating income for 2025 was $850 million, a $755 million increase compared to the previous year [28] Business Line Data and Key Metrics Changes - The TTR franchise generated $858 million in net revenues in Q4 2025, up 151% year-over-year [12] - The rare disease portfolio generated $136 million in net revenue in Q4, up 26% year-over-year [11] - GIVLAARI and OXLUMO together became a $500 million franchise in 2025, reflecting continued growth more than five years post-launch [11] Market Data and Key Metrics Changes - U.S. net revenues for the TTR franchise grew 20% compared to Q3 2025 and 222% compared to Q4 2024 [12] - International revenues grew 13% quarter-over-quarter and 47% year-over-year, indicating strong global momentum [14] - The company anticipates launching AMVUTTRA for ATTR cardiomyopathy in additional international markets throughout 2026 [14] Company Strategy and Development Direction - The company has set new five-year goals, Alnylam 2030, focusing on achieving global TTR leadership, sustainable innovation, and disciplined growth [8][9] - Plans include launching nucresiran in 2028 for polyneuropathy and 2030 for cardiomyopathy, with an aim for over 25% revenue CAGR through 2030 [10] - The company expects to invest approximately 30% of revenues in non-GAAP R&D to accelerate organic innovation and selectively access external innovation [9] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the size and growth of the ATTR-CM category, noting that the majority of patients remain untreated [15] - The early momentum of AMVUTTRA is encouraging, with strong customer demand and broad access expected to drive future growth [17] - Management highlighted the importance of improving diagnosis and treatment rates to expand the category further [18] Other Important Information - The company ended 2025 with cash, cash equivalents, and marketable securities of $2.9 billion, an increase from $2.7 billion at the end of 2024 [29] - Collaboration revenue for 2025 was $553 million, an 8% growth compared to 2024, including a significant milestone payment [26] Q&A Session Summary Question: Insights on new patient additions and first-line mix for patisiran versus tafamidis - Management expressed satisfaction with the AMVUTTRA launch and noted strong fundamentals supporting continued growth [41][43] Question: Addressing choppiness in scripts and pricing dynamics - Management indicated confidence in access and pricing, with a mid-single-digit net price decline expected in 2026 [49][61] Question: Seasonality effects in Q4 and potential tailwinds for Q1 2026 - Management acknowledged typical industry seasonality but emphasized that underlying momentum remains strong [53][54] Question: Gross to net pattern over 2026 - Management confirmed a gradual mid-single-digit net price decrease expected throughout the year [59][61] Question: External innovation strategy and potential partnerships - Management highlighted a focus on complementary technologies that enhance the existing portfolio and pipeline [66][98] Question: Impact of nucresiran on operating margins - Management anticipates significant positive margin impacts post-2030 if nucresiran demonstrates a best-in-class profile [70][71] Question: Updates on the Huntington's program and trial initiation - Management is optimistic about the Huntington's program and plans to accelerate it responsibly based on initial data [78][79] Question: Prioritization of ACVR1C asset in obesity pipeline - Management explained the prioritization based on preclinical data indicating ACVR1C's potential for greater efficacy compared to other targets [86][87]

Financial Data and Key Metrics Changes - Total global net product revenues for 2025 were nearly $3 billion, representing an 81% growth compared to 2024, driven by a more than doubling of revenue in the TTR franchise [25][26] - GAAP profitability was achieved for the full year 2025, with non-GAAP operating income of $850 million, a $755 million increase compared to last year [29] - Gross margin on product sales was 77% for the full year, a 4% decrease compared to 2024, primarily due to increased royalties on AMVUTTRA [27] Business Line Data and Key Metrics Changes - The TTR franchise generated $858 million in Q4, up 151% year-over-year, and $4.4-$4.7 billion in total TTR revenue guidance for 2026, representing an 83% growth at the midpoint [11][31] - The rare disease portfolio generated $136 million in Q4, up 26% year-over-year, with GIVLAARI and OXLUMO together becoming a $500 million franchise in 2025 [11][12] Market Data and Key Metrics Changes - U.S. TTR net revenues grew 20% compared to Q3 2025 and 222% compared to Q4 2024, while international revenues grew 13% quarter-over-quarter and 47% year-over-year [13][14] - The company anticipates a mid-single-digit net price decrease for AMVUTTRA in 2026, with international TTR revenue growth expected to be consistent with 2025 [31][32] Company Strategy and Development Direction - The company aims to achieve global TTR leadership and launch nucresiran in 2028 for polyneuropathy and 2030 for cardiomyopathy as part of its Alnylam 2030 goals [8][9] - The strategy includes investing approximately 30% of revenues in non-GAAP R&D to accelerate organic innovation and selectively access external innovation [9][10] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the growth potential of the TTR franchise, citing strong fundamentals and early momentum from the AMVUTTRA launch [41][44] - The company is focused on building a durable growth foundation through education, awareness, and diagnosis enablement to expand the ATTR-CM category [18][19] Other Important Information - The company initiated three Phase 3 studies in 2025 and expanded its clinical pipeline with four proprietary CTAs [19][20] - The proprietary enzymatic ligation manufacturing platform, Syrelis, was launched to enhance capacity and reduce costs [7][22] Q&A Session Summary Question: Insights on new patient adds and first-line mix for patisiran versus tafamidis - Management highlighted strong AMVUTTRA launch fundamentals and improved first-line access, supporting confidence in 2026 guidance [40][43] Question: Addressing choppiness in scripts and pricing dynamics - Management noted strong access for patients and a mid-single-digit net price decline integrated into the outlook [47][49] Question: Seasonality impact on Q1 and potential tailwind - Management acknowledged typical industry seasonality but emphasized that underlying momentum remains strong [52][54] Question: Gross to net pattern expectations for 2026 - Management expects a gradual mid-single-digit net price decrease throughout the year, with access discussions largely completed [59][61] Question: External innovation strategy and potential partnerships - Management indicated a focus on complementary technologies that enhance internal innovation, with a high bar for external opportunities [66][68] Question: Impact of nucresiran on operating margin - Management expressed high conviction in nucresiran's potential to drive margins to the mid-40s post-2030 due to its best-in-class profile [70][71] Question: Insights on Huntington's program and trial initiation - Management is optimistic about the Huntington's program and aims to accelerate it responsibly based on target engagement data [78][79] Question: Prioritization of ACVR1C asset in obesity pipeline - Management prioritized ACVR1C due to its potential for more potent effects compared to other targets, with results expected by year-end [86][87]

Financial Data and Key Metrics Changes - Total global net product revenues for 2025 were nearly $3 billion, representing an 81% growth compared to 2024, driven by a more than doubling of revenue in the TTR franchise [24][25] - The company achieved GAAP profitability for the full year 2025 and expects to sustain profitability going forward [5][27] - Non-GAAP operating income for the full year was $850 million, a $755 million increase compared to the previous year [26] Business Line Data and Key Metrics Changes - The TTR franchise generated $858 million in net revenues in Q4 2025, up 151% year-over-year [11] - The rare disease portfolio generated $136 million in net revenue in Q4, reflecting a 26% increase compared to the same period last year [10] - GIVLAARI and OXLUMO together became a $500 million franchise in 2025, showing continued growth more than five years post-launch [10] Market Data and Key Metrics Changes - U.S. net revenues for the TTR franchise grew 20% compared to Q3 2025 and 222% compared to Q4 2024 [11] - International revenues grew 13% quarter-over-quarter and 47% year-over-year, indicating strong global momentum [12] - The company anticipates launching AMVUTTRA for ATTR cardiomyopathy in additional international markets throughout 2026 [12] Company Strategy and Development Direction - The company has set new five-year goals, Alnylam 2030, focusing on achieving global TTR leadership, sustainable innovation, and disciplined growth [6][9] - Plans include launching nucresiran in 2028 for polyneuropathy and 2030 for cardiomyopathy, with aspirations to deliver RNAi to 10 tissue types and expand the pipeline to over 40 clinical programs by 2030 [7][8] - The company aims for over 25% revenue CAGR through 2030 and a non-GAAP operating margin of approximately 30% [9] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the size and growth of the ATTR-CM category, noting that the majority of patients remain untreated [14] - The early momentum of AMVUTTRA is encouraging, with strong customer demand and broad access expected to drive growth [16] - The company is focused on improving diagnosis and treatment rates to expand the category further [17] Other Important Information - The company initiated three Phase 3 studies in 2025 and expanded its clinical pipeline with four proprietary CTAs [18] - The proprietary enzymatic ligation manufacturing platform, Syrelis, was launched to enhance capacity and reduce costs [20] - The company ended 2025 with cash, cash equivalents, and marketable securities of $2.9 billion, an increase from $2.7 billion at the end of 2024 [27] Q&A Session Summary Question: Can you comment on new patient adds and the mix of first-line for patisiran versus tafamidis switches? - Management highlighted strong AMVUTTRA launch momentum and improved first-line access, supporting confidence in 2026 guidance [38][41] Question: Can you speak to the choppiness in scripts for the first quarter and pricing dynamics? - Management noted that the majority of patients have first-line access and expect a mid-single-digit net price decline in 2026, which is integrated into their outlook [44][47] Question: Have you seen any seasonality during the fourth quarter? - Management acknowledged typical industry seasonality but emphasized that underlying momentum remains strong [50][51] Question: What is the rationale for prioritizing the ACVR1C asset over others in your pipeline? - Management indicated that ACVR1C appears to be a more potent target based on preclinical work and emerging data [81][85] Question: How should we think about the impact of nucresiran on operating margins once available? - Management expects nucresiran to have a best-in-class profile, potentially driving margins to the mid-40s post-2030 [68][69]

© 2026 Alnylam Pharmaceuticals, Inc. 1 Agenda Fourth Quarter and Full Year 2025 Financial Results Welcome February 12, 2026 • Christine Akinc Chief Corporate Communications Officer Overview • Yvonne Greenstreet, M.D. Chief Executive Officer Commercial Highlights • Tolga Tanguler Chief Commercial Officer Pipeline • Pushkal Garg, M.D. Chief Research & Development Officer Financial Summary • Jeff Poulton Chief Financial Officer Q&A Session 2 Alnylam Forward-Looking Statements This presentation contains forward ...

Financial Data and Key Metrics Changes - Alnylam Pharmaceuticals reported total net product revenues of $851 million for Q3 2025, reflecting a 103% year-over-year growth [8][27] - The TTR franchise revenues reached $724 million, representing a 135% increase year-over-year and a 33% increase compared to the previous quarter [7][10] - The company increased its total net product revenue guidance for 2025 from a range of $2.65 billion to $2.8 billion to a revised range of $2.95 billion to $3.05 billion, indicating a 10% increase at the midpoint [8][30] Business Line Data and Key Metrics Changes - The rare disease portfolio achieved $127 million in sales, up 14% year-over-year, driven by ongoing patient demand [9][10] - U.S. net sales for the TTR franchise grew 42% quarter-over-quarter and 194% year-over-year, primarily due to the AMVUTTRA ATTR CM label expansion [11][14] - International revenues grew 13% quarter-over-quarter and 46% year-over-year, with strong performance in Japan and Germany [11][12] Market Data and Key Metrics Changes - The U.S. TTR franchise generated $543 million in net product revenues, reflecting a significant increase in patient demand [14][16] - The company noted that the international performance is benefiting from increased awareness and diagnosis in the hereditary ATTR polyneuropathy market [13] Company Strategy and Development Direction - Alnylam focuses on three core pillars: TTR leadership, growth through innovation, and strong financial performance [5][6] - The company is advancing its pipeline with new Phase 3 trials for zilebesiran and ALN-APP, targeting significant market opportunities [8][20] - The strategy includes expanding the AMVUTTRA ATTR CM launch globally, with expectations for further launches in 2026 [16][30] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the long-term opportunity for AMVUTTRA, highlighting substantial growth potential in the TTR category [16][17] - The company is optimistic about the ongoing demand and adoption of its therapies, particularly in the U.S. market [10][14] - Management acknowledged the competitive landscape but emphasized their strong positioning and execution capabilities [11][13] Other Important Information - The gross margin on product sales was reported at 77%, down from 80% in the same quarter last year, primarily due to increased royalties on AMVUTTRA [27] - The company ended the quarter with cash, cash equivalents, and marketable securities of $2.7 billion [29] Q&A Session Summary Question: Momentum of AMVUTTRA in first line versus switch population - Management noted that patient demand for AMVUTTRA has doubled, with broad adoption across various settings, indicating strong momentum [34][35] Question: Confidence in continued patient additions - Management highlighted the strong launch and raised guidance twice, indicating confidence in sustained momentum despite a decline in ONPATTRO [38][40] Question: Payer dynamics and feedback - Management reported no significant payer headwinds and positive feedback regarding the value of AMVUTTRA, with ongoing negotiations for 2026 [45][48] Question: Inventory demand and expectations for Europe - Management explained that inventory growth was offset by increased gross to net deductions, with modest contributions expected from the ex-U.S. market in Q4 [52][56] Question: TTR franchise guidance update - Management indicated that the updated guidance reflects expectations for Q4 revenues, estimating total TTR global revenue of $850 million to $900 million [60][61] Question: Impact of reimbursement cuts on diagnostics and therapeutics - Management acknowledged the importance of reimbursement for growth and expressed confidence in managing potential changes as policies become clearer [66][68]

Financial Data and Key Metrics Changes - Total net product revenues for Q3 2025 were $851 million, representing a 103% increase year-over-year [7][28] - TTR franchise revenues reached $724 million, showing a 135% year-over-year growth, primarily driven by the AMVUTTRA ATTR CM launch in the U.S. [6][11] - The company increased its total net product revenue guidance for 2025 from a range of $2.65 billion to $2.8 billion to a revised range of $2.95 billion to $3.05 billion, reflecting a 10% increase at the midpoint [8][33] Business Line Data and Key Metrics Changes - The rare disease portfolio achieved $127 million in sales, up 14% compared to Q3 2024, driven by ongoing patient demand [10] - U.S. net sales for the TTR franchise grew 42% quarter-over-quarter and 194% year-over-year, reflecting strong adoption following the AMVUTTRA ATTR CM label expansion [12][14] - Outside the U.S., revenues grew 13% quarter-over-quarter and 46% year-over-year, indicating continued global momentum [12] Market Data and Key Metrics Changes - The U.S. TTR franchise delivered $543 million in net product revenues, representing an increase of approximately $160 million versus the prior quarter [14] - In Japan, the AMVUTTRA ATTR CM launch is progressing well, tracking in line with leading launch analogs [12] - The international performance reflects the strength of the hereditary ATTR polyneuropathy legacy business, which remains robust despite new competition [12] Company Strategy and Development Direction - The company focuses on three core pillars: TTR leadership, growth through innovation, and strong financial performance [5] - The company is committed to establishing long-term leadership in TTR and advancing its pipeline of RNAi therapeutics [5][6] - The company plans to expand its global reach with anticipated international AMVUTTRA ATTR CM launches in 2026 [17] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the AMVUTTRA ATTR CM launch and the overall growth trajectory of the TTR franchise [8][11] - The management highlighted the importance of early treatment in ATTR cardiomyopathy and the positive reception from payers and physicians [62] - The company is optimistic about the potential of RNAi therapeutics to become the standard of care in TTR amyloidosis [19] Other Important Information - The company ended the quarter with cash, cash equivalents, and marketable securities of $2.7 billion [32] - Non-GAAP R&D expenses increased by 23% to $310 million, driven by costs associated with multiple Phase 3 clinical studies [31] - The company announced the initiation of a Phase 1 trial of ALN-5288 targeting Alzheimer's disease [26] Q&A Session Summary Question: Can you discuss the momentum of AMVUTTRA in first line versus switch population? - Management noted that patient demand for AMVUTTRA has doubled, with broad adoption across various settings, indicating healthy uptake [36][38] Question: What gives you confidence in continued patient additions next year? - Management highlighted the strong launch momentum and the raised guidance as indicators of confidence in sustained growth [53] Question: Can you provide insights on payer dynamics as you approach 2026? - Management reported no significant payer headwinds and positive feedback from payers regarding the value of AMVUTTRA [60][62] Question: How should we model inventory demand for AMVUTTRA? - Management explained that inventory growth was driven by increased demand, with expectations for continued growth in the fourth quarter [66][68] Question: What is the expected pricing strategy for AMVUTTRA in Europe? - Management indicated ongoing negotiations for pricing in Europe, with expectations for a gradual decline in net price over time [90][93]

Alnylam Pharmaceuticals FY Conference Summary Company Overview - Alnylam Pharmaceuticals is a pioneer in RNAi therapeutics, with over 20 years of development focused on drug delivery and innovation. The company currently has six commercial products, with four being actively commercialized. The primary focus is on the launch of products targeting cardiomyopathy in the ATTR market, which is significantly larger than previous markets the company has operated in [3][4]. Financial Performance - Alnylam is on the verge of achieving profitability, a goal set five years ago. The company reported a significant increase in top-line growth, with TTR revenue globally reaching $544 million, representing a 77% year-over-year growth. In the U.S., revenue was $383 million, with a $170 million increase from Q1, driven primarily by the cardiomyopathy launch [4][6]. Market Dynamics - The ATTR market has been segmented into hereditary polyneuropathy (PN) and cardiomyopathy (CM). The hereditary market is estimated to have about 50,000 patients, while the CM market is approximately ten times larger. The company has successfully launched its products in the CM segment, with an estimated 1,400 patients on therapy by the end of Q2 [5][6]. Launch Strategy and Execution - The rapid establishment of provider setups and payer coverage was a key driver for the successful launch. The company initially expected a six to nine-month setup period but achieved this in a much shorter timeframe. The focus was on getting the drug on formulary at health systems, which are critical for patient treatment [7][8][10]. Demand and Patient Segmentation - The demand for the product has been balanced between first-line and second-line treatments. Initially, demand was primarily from second-line patients, but by the end of the quarter, first-line demand was building. The company estimates that only about 20% of patients are currently treated, indicating significant growth potential [15][16][17]. Competitive Landscape - The competitive environment includes products from Pfizer and BridgeBio. The majority of patients are still being treated with tafamidis, but there is a growing interest in new products. The company aims to leverage its data from the HELIOS-B study to drive market share [21][22]. Pricing Strategy - Alnylam maintained the same pricing for its new product as for its previous offerings, with expectations of gradual price reductions over time. The company reported that approximately 70% of patients had zero out-of-pocket costs, making the product accessible despite its high cost [24][25][26]. Guidance and Future Outlook - The company raised its net product revenue guidance by $600 million, reflecting strong performance and expectations for continued growth. The TTR franchise is expected to grow by about $1 billion in revenue compared to 2024, with plans to expand into additional markets outside the U.S. starting in 2026 [27][30][31]. Long-term Market Evolution - Alnylam anticipates the entry of generics for tafamidis around the end of 2028, which may shift the market dynamics. The company is preparing for this by focusing on combination therapies and positioning its products effectively [39][40][41]. Pipeline and Future Innovations - The company is developing ALN-TTRsc04, a third-generation TTR product expected to provide better efficacy and convenience with a dosing schedule of once every six months. This product is anticipated to launch around 2030, coinciding with the expected generic entry of tafamidis [43][49]. Conclusion - Alnylam Pharmaceuticals is positioned for significant growth with a strong pipeline and a focus on innovative therapies. The company is committed to achieving long-term profitability and expanding its market presence while navigating competitive dynamics and evolving market conditions [64][65].

Core Insights - Arbutus Biopharma has reported that imdusiran combination therapy has functionally cured eight patients with chronic hepatitis B (cHBV), including two patients who did not receive interferon [1][2] - The company has a strong financial position with cash, cash equivalents, and marketable securities totaling $113 million as of March 31, 2025 [1][9] - Andrew J. Sung has joined Arbutus as General Counsel, bringing over $28 billion in life sciences deal experience [1][8] Clinical Developments - Imdusiran (AB-729) has shown promising results, with eight patients achieving functional cure, particularly notable as two did not receive interferon [2][6] - The oral PD-L1 inhibitor AB-101 demonstrated 100% receptor occupancy in 11 of 13 evaluable healthy volunteers during Phase 1a/1b trials, indicating its safety and tolerability [3][10] - Data presented at the EASL Congress 2025 highlighted that patients with baseline HBsAg <1000 IU/mL had a significant chance of achieving functional cure when treated with imdusiran and low-dose nivolumab [6][22] Financial Performance - For Q1 2025, total revenue was $1.8 million, an increase from $1.5 million in Q1 2024, attributed to revenue recognition from a collaboration with Qilu [10][11] - Operating expenses for Q1 2025 were $27.5 million, with research and development expenses decreasing to $9.0 million from $15.4 million in the same period last year [12][15] - The net loss for Q1 2025 was $24.5 million, compared to a net loss of $17.9 million in Q1 2024, reflecting increased restructuring costs [15][20] Corporate Updates - The company is actively involved in litigation regarding its patented LNP technology against Moderna and Pfizer/BioNTech, seeking fair compensation for their use of this technology [9][10] - Andrew J. Sung's appointment as General Counsel is expected to enhance the company's legal strategy and corporate governance [4][8] - Arbutus continues to streamline its operations, focusing on advancing clinical development while reducing workforce and operational costs [12][14]

Financial Data and Key Metrics Changes - In Q1 2025, Alnylam Pharmaceuticals reported total product revenues of $469 million, representing a 28% year-over-year growth, driven by a 36% increase in the TTR franchise revenues [8][40] - Collaboration revenue decreased by 16% to $99 million compared to the previous year, primarily due to a milestone achieved in Q1 2024 [41] - Non-GAAP operating profit for the quarter was $75 million, reflecting a $73 million improvement year-over-year [43] Business Line Data and Key Metrics Changes - The TTR franchise generated $359 million in global net revenues, a 36% increase compared to Q1 2024, with U.S. sales growing by 45% year-over-year [15][16] - The rare disease franchise, including GIVLAARI and OXLUMO, delivered $109 million in combined product sales, representing an 8% growth year-over-year [14] Market Data and Key Metrics Changes - In the U.S., the TTR franchise saw a 32% increase in demand driven by ongoing ONPATTRO patient uptake, with Ambutra capturing approximately 70% of new patient starts in Q1 2025 [16][19] - Internationally, the TTR franchise grew by 24% compared to Q1 2024, primarily due to increased demand for Ambutra [17] Company Strategy and Development Direction - Alnylam aims to become the global leader in TTR, focusing on broad access, driving awareness, and supporting treatment initiation for patients [7][10] - The company is committed to achieving sustainable non-GAAP profitability in 2025 and emphasizes a disciplined approach to capital allocation [9][11] Management's Comments on Operating Environment and Future Outlook - Management acknowledged uncertainties related to potential policy changes, including tariffs and FDA personnel reorganization, but expressed confidence in Alnylam's positioning to mitigate impacts [9][45] - The management reiterated guidance for continued growth and a strong launch in ATTR cardiomyopathy, projecting a robust 36% year-over-year growth in TTR franchise revenues [27][39] Other Important Information - Alnylam received FDA approval for Ambutra as the first and only silencer approved in the U.S. for ATTR Centimeters, with a successful launch underway [20][30] - The company is advancing its pipeline with several pivotal studies planned, including TRITON Centimeters and TRITON PN [47] Q&A Session Summary Question: Initial patients starting treatment and prescriber base - Management noted a broad uptake among both experienced and new prescribers, indicating strong early momentum in the cardiomyopathy launch [51][53] Question: Revenue benchmarks for ATTR cardiomyopathy - Management clarified that the revenue contribution from ATTR cardiomyopathy was not included in Q1 results, as the approval came late in the quarter [57][62] Question: Commercial strategies to capture market share - Management highlighted the unique mechanism of action of Ambutra and its potential as a first-line treatment, which is driving physician interest [64][66] Question: Use of Quick Start program and formulary access - Management reported limited use of the Quick Start program, with most patients paying zero copay, and confirmed no price difference between indications [70][72] Question: Impact of TrueBee on Ambutra's launch - Management indicated no headwinds from TrueBee's launch, emphasizing the growing and unsatisfied market for ATTR treatments [76][78] Question: Metrics on health systems and patient initiation - Management confirmed that over half of the 170 priority health systems have Ambutra on formulary, with many already initiating treatments [97][99]

Financial Data and Key Metrics Changes - In Q1 2025, Alnylam Pharmaceuticals reported total product revenues of $469 million, representing a 28% year-over-year growth, driven by a 36% increase in the TTR franchise revenues [6][37] - Collaboration revenue decreased by 16% to $99 million compared to the previous year, primarily due to a milestone achieved in Q1 2024 [38] - Gross margin on product sales remained at 85%, consistent with Q1 2024, but is expected to decrease for the remainder of the year due to escalating royalty rates [39][41] Business Line Data and Key Metrics Changes - The TTR franchise generated $359 million in global net revenues, a 36% increase year-over-year, with U.S. sales growing by 45% [14][15] - The rare disease franchise, including GIVLAARI and OXLUMO, delivered $109 million in combined product sales, reflecting an 8% growth year-over-year [13] - The TTR franchise's growth was primarily driven by increased demand for ONPATTRO and Ambutra, with a 32% increase in demand noted [15][16] Market Data and Key Metrics Changes - In the U.S., Ambutra captured approximately 70% of new patient starts in the first quarter of 2025, indicating strong market leadership despite new competition [18] - Internationally, the TTR franchise grew by 24% compared to the first quarter of 2024, driven by robust patient uptake [16] - The company noted that about 80% of the global addressable population remains untreated, presenting significant growth opportunities [19] Company Strategy and Development Direction - Alnylam aims to become the global leader in TTR, focusing on broad access, driving awareness, and supporting treatment initiation for patients [5][9] - The company is committed to achieving sustainable non-GAAP profitability in 2025 while continuing to advance its high-value pipeline [7][10] - Alnylam's strategy includes leveraging its innovative pipeline with multiple multibillion-dollar opportunities and maintaining strong financial performance through disciplined capital allocation [9][10] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the company's positioning despite uncertainties related to potential policy changes, tariffs, and FDA reorganizations [7][8] - The management highlighted the strong early progress in the launch of Ambutra for ATTR cardiomyopathy and reiterated guidance for continued growth [6][37] - The company remains optimistic about achieving its 2025 goals, which include expanding access to its therapies and enhancing patient outcomes [10][26] Other Important Information - Alnylam received FDA approval for Ambutra as the first and only silencer approved in the U.S. for ATTR cardiomyopathy, with positive opinions from regulatory bodies in Brazil and the EU [20][29] - The company is advancing its pipeline with new clinical programs targeting various diseases, including a Phase I study for ALN434 targeting Type 2 diabetes [34][35] Q&A Session Summary Question: What is the profile of prescribers for Ambutra? - Management noted a broad uptake among both experienced prescribers and new doctors, indicating strong initial engagement with the product [48][51] Question: How does the revenue from ATTR cardiomyopathy compare to previous products? - Management clarified that the revenue from ATTR cardiomyopathy did not contribute to Q1 results, as the approval came late in the quarter [55][60] Question: What strategies are being employed to compete with tafamidis? - Management emphasized the unique mechanism of action of Ambutra and its compelling clinical data, which positions it as a first-line treatment option [62][64] Question: What are the dynamics of reimbursement for Ambutra? - Management explained that Ambutra has a single price across indications and highlighted the effectiveness of their patient support programs in facilitating access [68][70] Question: What are the expectations for formulary inclusion? - Management aims to complete formulary inclusion for all priority health systems by year-end, with encouraging early results already seen [81][82] Question: How is the early uptake of Ambutra characterized? - Management indicated that early uptake includes both switch patients and new patients, reflecting a strong initial market response [100][102]