Key Takeaways Amvuttra drives Alnylam's top line through expanded label and as patients switch from Onpattro.Givlaari, Oxlumo, and royalties from Leqvio add incremental revenues and global growth potential.Rare disease drugs delivered $236.8M in H1 2025 revenues, up 16% year over year.Alnylam Pharmaceuticals’ (ALNY) primary top-line driver is its newest drug, Amvuttra (vutrisiran), which is approved in the United States and the EU for treating the polyneuropathy of hereditary transthyretin-mediated (hATTR) ...

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Core Viewpoint - Alnylam Pharmaceuticals reported better-than-expected financial results for Q1 2025, with adjusted losses narrower than estimates and significant revenue growth driven by strong product sales, particularly for Amvuttra [1][2][16]. Financial Performance - The company reported total revenues of $594.2 million, exceeding the Zacks Consensus Estimate of $588.2 million, and reflecting a 20% year-over-year increase [2]. - Net product revenues reached $468.5 million, up 28% year-over-year, primarily due to increased demand for Amvuttra, Givlaari, and Oxlumo [2][6]. - Net revenues from collaborators were $99.2 million, down 16% from the previous year, largely due to a prior milestone payment from Roche [3]. Product Sales - Amvuttra generated sales of $310 million, a 59% increase year-over-year, and surpassed estimates [6]. - Givlaari recorded sales of $67 million, a 15% increase year-over-year, but slightly missed estimates [7]. - Oxlumo's sales were $42.1 million, remaining flat year-over-year and missing estimates [7]. Expenses and Cash Position - Adjusted R&D expenses were approximately $241.3 million, remaining stable year-over-year [10]. - Adjusted SG&A expenses increased by 12% to $207 million, driven by marketing efforts for Amvuttra [11]. - Cash, cash equivalents, and marketable securities totaled $2.63 billion as of March 31, 2025, down from $2.69 billion at the end of 2024 [11]. Guidance and Collaborations - The company reiterated its 2025 financial guidance, expecting net product revenues between $2.05 billion and $2.25 billion, and collaboration revenues between $650 million and $750 million [12]. - Alnylam is advancing several collaborations, including with Regeneron and Roche, which are expected to enhance its product pipeline and revenue streams [13][14][17]. Market Performance - Year-to-date, Alnylam's stock has gained 8.4%, outperforming the industry, which has seen a decline of 1.8% [8].