Second Quarter 2024 Business Update August 8, 2024 © 2024 Scholar Rock, Inc. All rights reserved. 1 Forward-Looking Statements Various statements in this presentation concerning the future expectations, plans and prospects of Scholar Rock Holding Corporation and Scholar Rock, Inc. (collectively, "Scholar Rock"), including without limitation, Scholar Rock's expectations regarding its strategy, its product candidate selection and development timing, including timing for the initiation of and reporting results ...

Dedicated to Dramatically Improving the Lives of Patients with SMA Q1 2025 Business Update May 14, 2025 © 2025 Scholar Rock, Inc. All rights reserved. Q1 Earnings Call | TO P I C | S P E A K E R | | --- | --- | | Scholar Rock Next Phase of Growth | David L. Hallal | | | Chief Executive Officer | | R&D Progress | Akshay Vaishnaw, M.D., Ph.D | | | President of R&D | | Commercial Readiness | Keith Woods | | | Chief Operating Officer | | Company Financials | Vikas Sinha | | | Chief Financial Officer | | Q&A Ses ...

Investment Rating - The industry investment rating is "Positive" (maintained) [1] Core Insights - The report highlights recent positive developments in the high-quality weight loss sector, particularly focusing on myostatin pathway clinical trial results from Regeneron and Scholar Rock, which demonstrate significant reductions in lean body mass loss when combined with GLP-1 medications [4][12] - The pharmaceutical and biotechnology sector experienced a decline of 4.35% in the third week of June 2025, underperforming the CSI 300 index by 3.9 percentage points, ranking 29th among 31 sub-industries [5][16] - The report emphasizes the potential of Activin receptor drugs, such as Eli Lilly's Bimagrumab and Lai Kai's LAE-102, to retain lean body mass and even promote muscle gain, with promising safety and pharmacokinetic data [4][12] Summary by Sections 1. Recent Developments in Weight Loss Sector - Regeneron's myostatin antibody Trevogrumab combined with semaglutide showed a 50.8% reduction in lean body mass loss over 24 weeks, compared to a 7.9 lbs loss with semaglutide alone [4][12] - Scholar Rock's myostatin antibody Apitegromab combined with Tirzepatide demonstrated a 54.9% reduction in lean body mass loss [4][12] 2. Market Performance - The pharmaceutical and biotechnology sector's decline of 4.35% in June's third week was the largest among all sectors, with the vaccine sector experiencing the smallest drop of 0.4% [5][21] - Other sub-sectors, such as blood products and medical consumables, also faced declines, with the largest drop seen in other biological products at 6.7% [5][21] 3. Recommended Stocks - Recommended stocks include major pharmaceutical and biotechnology companies such as Heng Rui Medicine, East China Medicine, and Innovent Biologics, among others [6]

Shares of Scholar Rock Holding (SRRK 14.77%) are soaring today, up 13.7% as of 1:14 p.m. ET. The move comes as the S&P 500 and Nasdaq Composite were up modestly.Scholar Rock, a biopharma company, reported positive results from a phase 2 trial of its muscle-preserving weight-loss therapy.Significant resultsThe study evaluated Scholar Rock's apitegromab in combination with Eli Lilly's blockbuster weight-loss drug tirzepatide (sold as Mounjaro and Zepbound). The combo showed a significant reduction in lean mas ...

Scholar Rock SRRK revealed results on Wednesday from the Phase 2 EMBRAZE proof-of-concept trial assessing apitegromab in combination with tirzepatide to preserve lean mass during tirzepatide-induced weight loss.Tirzepatide is an active ingredient in Eli Lilly And Co’s LLY widely used Mounjaro and Zepbound for diabetes and weight loss, respectively.The trial demonstrated that 30% of the total weight loss with tirzepatide alone was due to lean mass loss.Apitegromab therapy (10 mg/kg) with tripeptide preserved ...

Investment Rating - The report maintains a "Positive" investment rating for the industry [1] Core Insights - The report highlights the significant potential of blocking the Activin receptor (ActR) signaling pathway to promote muscle growth, particularly in treating muscle atrophy-related diseases [4][9] - There is a substantial unmet clinical need for muscle-targeted therapies, especially for patients with spinal muscular atrophy (SMA) and those experiencing muscle loss due to aging or weight management [4][29] - The market for muscle-targeted therapies is projected to be large, with current SMA therapies generating approximately $4.5 billion in sales, indicating a significant opportunity for new treatments [4][33] Summary by Sections 1. ActR Pathway - The ActR pathway plays a crucial role in regulating muscle, blood, and bone through members of the TGFβ superfamily, including Myostatin [9] - Blocking the ActR pathway can effectively treat muscle atrophy by inhibiting Myostatin, which negatively regulates muscle growth [4][10] 2. Clinical Applications of ActR Pathway Blockade: Spinal Muscular Atrophy (SMA) - SMA is a genetic neuromuscular disease caused by mutations in the SMN1 gene, leading to severe muscle atrophy and respiratory failure [22][23] - Current SMA therapies primarily target SMN protein, but they have limitations, highlighting the need for combined therapies that also address muscle atrophy [25][29] 3. Clinical Applications of ActR Pathway Blockade: Weight Management - Muscle loss is a significant issue not only in genetic diseases but also in aging populations, with a 1% annual muscle loss in individuals over 60 [36] - The widespread use of GLP-1RA medications has been linked to 25-40% muscle loss in users, creating a demand for therapies that preserve or enhance muscle mass during weight management [36] 4. Targeted ActRII Pathway Drugs - Apitegromab, developed by Scholar Rock, is a monoclonal antibody targeting latent Myostatin, showing promising results in Phase 3 trials for SMA and expected to submit for FDA approval [38][39] - Taldefgrobep, developed by BIOHAVEN, targets active Myostatin but did not meet primary endpoints in its Phase 2 trial for SMA, although it showed trends of benefit in certain subgroups [57][62] - GYM329, developed by Roche, specifically targets latent Myostatin and is currently undergoing clinical trials for various indications, demonstrating potential for muscle mass increase [69]

Financial Data and Key Metrics Changes - Scholar Rock reported an outstanding year in 2024, with significant progress towards regulatory milestones for apitegromab, including the submission of the BLA in the U.S. in January and the upcoming MAA submission in the EU in March [6][36]. - The company anticipates a transformative year in 2025, with plans for a potential launch of apitegromab in the U.S. in Q4 2025 and in the EU in 2026 [37]. Business Line Data and Key Metrics Changes - The SAPPHIRE study demonstrated that apitegromab plus standard-of-care resulted in a 1.8% improvement in the Hammersmith Functional Motor scale compared to placebo, with 30% of patients achieving a 3-point or greater improvement [9][10]. - The cardiometabolic program is on track to share top-line data from the EMBRAZE study in Q2, with the IND filing for SRK-439 planned for Q3 [8][35]. Market Data and Key Metrics Changes - Approximately two-thirds of the 10,000 individuals living with SMA in the U.S. and 35,000 globally have received SMA-targeted therapy, indicating a significant market opportunity for apitegromab as a muscle-targeted therapy [14][15]. - The current market for GLP-1 receptor agonists is projected to generate over $100 billion in sales, highlighting the potential impact of Scholar Rock's cardiometabolic programs [22]. Company Strategy and Development Direction - Scholar Rock aims to establish a neuromuscular franchise starting with SMA, with plans to expand treatment to other neuromuscular disorders [37]. - The company is focused on building a strong commercial team and infrastructure to support the launch of apitegromab, including outreach to payers and scaling the customer-facing team [19][20]. Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the potential of apitegromab to transform the standard of care for SMA, emphasizing the importance of addressing progressive muscle weakness [12][15]. - The company is optimistic about the EMBRAZE study and the potential for SRK-439 to enhance weight management therapies by preserving lean muscle mass [35][36]. Other Important Information - Scholar Rock has initiated a disease education campaign called "Life Takes Muscle" to raise awareness about the impacts of muscle weakness in SMA [16][17]. - The company is preparing to offer home infusion services at launch to enhance patient support [19]. Q&A Session Summary Question: Discussion on SAPPHIRE data presentation - Management highlighted the importance of presenting additional data points at the MDA conference, focusing on the consistency and impact across age groups and endpoints [42][43]. Question: Insights on obesity and lean mass preservation - Management clarified that a 20% to 40% improvement in lean mass is considered clinically meaningful, and they are looking for trends in the EMBRAZE study to inform the development of SRK-439 [41][47]. Question: Exploration of additional neuromuscular indications - Management is actively engaging experts to explore adjacent neuromuscular indications and is assessing the unmet need and technical success probability for potential studies [60][63]. Question: Implications of FDA guidance on obesity trials - Management noted that the FDA's guidance reinforces the importance of assessing lean mass loss and that they will continue to follow this closely while developing SRK-439 [69][71]. Question: Comparison of SRK-439 and apitegromab - Management expressed confidence in the profile of SRK-439, indicating it may have greater affinity for the target and could potentially offer advantages in dosing and efficacy [80][82]. Question: Initial payer discussions and pricing strategy - Payers have shown receptiveness to Scholar Rock's innovation, and management expects access to be reflective of the value apitegromab brings to SMA treatment [85][86]. Pricing details are not yet disclosed but are expected to align with other SMA treatments [89].