Summary of Amylyx Pharmaceuticals (AMLX) Update / Briefing July 13, 2025 Company Overview - **Company**: Amylyx Pharmaceuticals (AMLX) - **Focus**: Development of Avexatide, a potential GLP-1 receptor antagonist for treating post-bariatric hypoglycemia (PBH) with Breakthrough Therapy Designation from the FDA Industry Context - **Condition**: Post-bariatric hypoglycemia (PBH) is a serious metabolic condition that occurs in patients after bariatric surgery, characterized by severe hypoglycemic episodes - **Prevalence**: Approximately 400,000 individuals in the U.S. experience clinically important hypoglycemia after bariatric surgery, with around 166,000 requiring medical management [42][43] Key Points and Arguments 1. **Patient Experience**: A patient shared her struggles with PBH, highlighting the debilitating nature of the condition, which severely limits daily activities and quality of life [8][9][15][16] 2. **Medical Need**: There is a significant unmet medical need for effective treatments for PBH, as current dietary modifications and off-label medications often fail to provide relief [39][40] 3. **Mechanism of PBH**: PBH is caused by an exaggerated GLP-1 response post-surgery, leading to hyperinsulinism and subsequent hypoglycemia. This condition can develop 2-3 years after surgery, but may occur anytime from 2 to 20 years post-operation [19][41] 4. **Current Treatments**: Existing treatments are limited and often ineffective, with no FDA-approved medications specifically for PBH. Dietary modifications and off-label medications have high failure rates and significant side effects [22][39] 5. **Avexatide's Mechanism**: Avexatide targets the GLP-1 receptor to normalize insulin secretion and stabilize glucose levels, addressing the underlying pathophysiology of PBH [49][50] 6. **Clinical Trials**: The Phase II and Phase IIb studies showed that Avexatide significantly reduced the frequency of Level II and Level III hypoglycemic events by over 50% [57][72] 7. **FDA Breakthrough Therapy Designation**: Avexatide is the only drug in development for PBH to receive this designation, indicating its potential to address a serious condition with high unmet medical need [57] 8. **LUCIDITY Phase III Trial**: The ongoing Phase III trial will evaluate the efficacy of Avexatide at a dose of 90 mg once daily, focusing on reducing hypoglycemic events [78][81] Additional Important Content - **Patient Education**: There is a critical need for increased awareness and education about PBH among healthcare providers and patients, as many patients are misdiagnosed or experience delays in receiving appropriate care [38][41] - **Quality of Life Impact**: The unpredictable nature of hypoglycemic events leads to social isolation and significant emotional distress for patients, emphasizing the need for effective treatment options [66][68] - **Future Outlook**: The company is actively recruiting for the LUCIDITY trial, with data expected in the first half of 2026, aiming to bring a much-needed therapy to market for PBH patients [85][86]

Core Viewpoint - Bragar Eagel & Squire, P.C. is investigating potential claims against Amylyx Pharmaceuticals, Inc. due to a class action complaint alleging breaches of fiduciary duties by the company's board of directors during the specified class period [1][2]. Summary by Relevant Sections Allegations of Misconduct - The complaint asserts that the Individual Defendants made false and misleading statements regarding the Relyvrio commercial launch, claiming significant demand that was not sustainable [2]. - It is alleged that the initial surge in demand for Relyvrio was temporary and had already subsided within months of its launch, undermining growth potential among newly diagnosed ALS patients [2]. - The complaint highlights that there were high, undisclosed discontinuation rates for Relyvrio, which negatively impacted the drug's commercial viability and inflated the perceived potential for acquiring new patients [2]. Legal Representation - Bragar Eagel & Squire, P.C. is representing long-term stockholders of Amylyx and is open to inquiries regarding the claims and rights of investors [3]. Firm Background - Bragar Eagel & Squire, P.C. is a recognized law firm specializing in representing individual and institutional investors in various complex litigations across state and federal courts [4].

Core Viewpoint - Guggenheim Partners has initiated coverage on Amylyx Pharmaceuticals, highlighting the potential of post-bariatric hypoglycemia (PBH) as a significant market opportunity for the company [1][2]. Company Overview - Amylyx Pharmaceuticals is positioned as a first-to-market player in the PBH space, which is estimated to be a $2 billion+ market opportunity [2]. - The company's lead drug, avexitide, is advancing towards pivotal Phase 3 results in the LUCIDITY study, expected to read out in the first half of 2026 [3]. Market Potential - Guggenheim estimates that there are 50,000 to 100,000 individuals in the U.S. suffering from moderate to severe uncontrolled symptoms of PBH [4]. - The global market for GLP-1 antagonists to treat PBH could exceed $2 billion by 2035, with projections of $1.8 billion in the U.S. and $410 million internationally, assuming a 60% peak market share among patients with severe PBH [4]. Competitive Landscape - The main competitor in the PBH market is MBX Biosciences, which is developing a once-weekly GLP-1 antagonist called MBX 1416 [5]. - Analyst estimates suggest that a once-weekly competitor could launch by 2031, while Amylyx's life cycle management strategy may enhance its market position [5]. Stock Performance - As of the last check, Amylyx Pharmaceuticals' stock (AMLX) has increased by 24.5%, reaching $6.25 [5].

Study Overview - The HELIOS trial evaluated the safety, tolerability, and efficacy of PB&TURSO in Wolfram Syndrome patients [1, 15] - The study was an open-label Phase 2 trial [1, 16] - The trial included 12 enrolled participants, with 11 in the Per Protocol (PP) population who had genetically confirmed Wolfram Syndrome [16, 26] Efficacy Results - At Week 24, the Per Protocol group (N=11) showed improvement in C-peptide response to Mixed Meal Tolerance Test (MMTT) compared to screening [30, 31] - At Week 24, C-Peptide AUC increased by 16.8 min*ng/mL in ITT population and 20.2 min*ng/mL in Per Protocol population [34] - 10 out of 11 participants in the Per Protocol group maintained or decreased time to peak C-peptide at Week 24 compared to screening [37, 38] - HbA1c levels showed a mean change from baseline of -0.09% in the ITT group and -0.16% in the Per Protocol group at Week 24 [40, 45] - 9 of 11 Per Protocol participants demonstrated reduced or unchanged HbA1c from Screening to the latest available time point [42] - 8 of 11 participants in the Per Protocol group demonstrated improved or stable visual acuity in their best eye from Screening to the latest available timepoint [51] Safety and Tolerability - PB&TURSO was generally well-tolerated [53] - 91.7% of participants (11 out of 12) experienced at least one Treatment Emergent Adverse Event (TEAE) [53] - Diarrhea was the most common TEAE, affecting 50% of participants, but all cases were of mild severity [55]

Summary of Amylyx Pharmaceuticals (AMLX) FY Conference June 10, 2025 Company Overview - Amylyx Pharmaceuticals has undergone significant changes in the past year, focusing on three different assets across four ongoing clinical trials [1][2] Key Assets and Clinical Trials 1. **Avexatide** - A GLP-1 receptor antagonist aimed at treating post-bariatric hypoglycemia (PBH) - Currently in a pivotal study with enrollment completion targeted by the end of 2025 and data expected in the first half of 2026 [3][6] - Previous studies supported FDA Breakthrough Therapy Designation, with five prior studies demonstrating its efficacy [3][19] 2. **AMX-35** - A small molecule targeting endoplasmic reticulum (ER) stress and mitochondrial dysfunction - Trials ongoing for Wolfram's syndrome and progressive supranuclear palsy (PSP) - Positive data from the HELIOS trial for Wolfram's syndrome was recently announced, showing increased C-peptide levels, indicating improved insulin production [4][5] 3. **AMX-114** - An antisense oligonucleotide targeting calpain-2 for ALS and other neurodegenerative diseases - A dose-escalating placebo-controlled study has commenced, with safety and early biomarker data expected by the end of 2025 [5][6] Market Insights and Patient Population - The estimated addressable patient population for PBH is around 160,000, based on studies indicating that approximately 8% of bariatric surgery patients develop PBH [10][11] - Symptoms of PBH can severely disrupt patients' lives, leading to dizziness, loss of consciousness, and confusion, making effective treatment critical [9][10] - Adult endocrinologists primarily manage PBH symptoms, with many clinics reporting a significant number of patients under care [13][14] Clinical Data and Efficacy - Phase II trials of Avexatide showed a 53% reduction in level II hypoglycemic events and a 66% reduction in level III events, both statistically significant [23][24] - The Phase III trial is designed to maintain consistency with Phase II, focusing on patients experiencing at least one hypoglycemic event per week [25][28] Regulatory and Commercial Considerations - The FDA's Breakthrough Therapy Designation facilitates more frequent interactions and support for the pivotal study [35] - Pricing strategies will be informed by market research and comparisons with other rare endocrine launches, with a focus on demonstrating the unmet need and efficacy to payers [37][39] Intellectual Property and Collaborations - Avexatide has a base case patent extending to 2037, with additional method of use and formulation patents [41] - A collaboration with Gubra aims to develop a long-acting GLP-1 receptor antagonist, with potential applications in other hypoglycemia-related conditions [43][44] Future Directions - The company is exploring additional indications for Avexatide, including congenital hyperinsulinism and hypoglycemia resulting from other surgeries [50][51] - Ongoing discussions with regulators will focus on the design of the Phase III trial for Wolfram's syndrome, aiming to establish key endpoints and study duration [61][64] Financial Position - Amylyx ended the last quarter with $204 million in cash, providing a runway through the end of 2026, covering pivotal studies and ongoing programs [74][75]

Summary of Amylyx Pharmaceuticals (AMLX) Conference Call Company Overview - **Company**: Amylyx Pharmaceuticals (AMLX) - **Focus**: Developing therapies for rare diseases, particularly post bariatric hypoglycemia (PBH) and other neurodegenerative conditions [5][6] Key Points on Lead Asset: Avexatide - **Indication**: Avexatide is a competitive inhibitor of GLP-1, targeting PBH, a rare condition following bariatric surgery characterized by severe hypoglycemic events [5][6] - **Clinical Trials**: - Five past trials demonstrated significant benefits, including a 53% reduction in level two hypoglycemic events and a 66% reduction in level three events [6][21] - Phase III study recruitment expected to complete by the end of 2025, with data anticipated in the first half of 2026 [7][49] - **Market Opportunity**: - PBH affects an estimated 160,000 people in the U.S., with the number expected to rise due to increasing bariatric surgeries (approximately 270,000 annually) [12][13] - Current treatment options are limited, primarily involving medical nutrition therapy [14][15] Regulatory Designation and Pricing - **Breakthrough Therapy Designation**: Received based on prior trial data, facilitating closer collaboration with the FDA [7][20] - **Pricing Strategy**: Pricing has not been finalized; however, the company is considering the orphan drug designation and recent market entries in rare endocrine disorders as benchmarks [17][18] Other Assets and Trials - **AMX35**: - Studied in Wolfram syndrome and progressive supranuclear palsy (PSP) [7][58] - Recent data from Wolfram syndrome trials showed stabilization and improvement in various outcomes over 48 weeks [60][61] - **AMX-114**: An antisense oligonucleotide targeting calpain two, currently in a clinical trial for ALS, with data expected by the end of the year [9] Competitive Landscape - **Current Competition**: No known drugs have shown efficacy in treating PBH, positioning Avexatide uniquely in the market [54] - **GLP-1 Agonists**: While there are concerns about competition from GLP-1 agonists, the company believes that the target population for bariatric surgery is distinct and will continue to grow [55][56] Future Milestones - **Phase III Trial**: Expected to provide pivotal data for FDA approval, with a focus on maintaining consistency with Phase II trial parameters [36][62] - **Market Access**: Preparations for market access strategies are underway, emphasizing the importance of ensuring patient access post-approval [52] Conclusion - Amylyx Pharmaceuticals is advancing its lead asset Avexatide through critical clinical trials aimed at addressing significant unmet needs in rare diseases, particularly PBH. The company is optimistic about its market potential and regulatory pathway, with ongoing efforts to ensure successful trial outcomes and market access strategies.

Financial Data and Key Metrics Changes - The company is actively recruiting for a pivotal study of Avexatide, with top-line results expected in the first half of next year, potentially supporting commercialization in 2027 [3][18] - The company has cash reserves expected to last through the end of 2026, allowing it to fund ongoing clinical trials and development programs [36] Business Line Data and Key Metrics Changes - Avexatide, the lead asset, has shown significant reductions in level two and level three hypoglycemic events, with a 53% reduction in level two events and a 66% reduction in level three events in previous trials [12] - AMX-35 has demonstrated stabilization or improvement in diabetic outcomes in patients with Wolfram syndrome, with continued improvements observed at the 48-week mark [24][25] Market Data and Key Metrics Changes - There are an estimated 160,000 people in the United States suffering from post-bariatric hypoglycemia (PBH), a condition with no FDA-approved treatments currently available [10][18] - Wolfram syndrome affects approximately 3,000 individuals in the U.S., while progressive supranuclear palsy (PSP) is estimated to impact around 23,000 people [21][29] Company Strategy and Development Direction - The company focuses on diseases with substantial unmet needs, aiming to develop therapies that can effectively address these conditions [38] - The strategic direction includes advancing multiple clinical trials, with a strong emphasis on obtaining positive data to support further investment in promising programs [31][37] Management's Comments on Operating Environment and Future Outlook - Management expressed optimism about the potential of Avexatide to meet a significant unmet need in PBH, highlighting the growing population affected by this condition [17][18] - The company is preparing for a Phase III program for AMX-35, with plans to share the design before the end of the year [37] Other Important Information - The company has received FDA breakthrough therapy designation for Avexatide, which underscores the potential significance of this treatment in the market [3] - The company is also working on AMX-114, an antisense oligonucleotide targeting CALPIN-two for ALS, with early cohort data expected by the end of the year [36] Q&A Session Summary Question: What are the upcoming milestones for Avexatide? - The company expects to complete recruitment for the pivotal study by the end of the year and have data in the first half of next year, which could support filing for approval in PBH [37] Question: How is the company addressing the needs in Wolfram syndrome? - The company has reported positive 48-week data for AMX-35 in Wolfram syndrome and is working on finalizing the Phase III design [37] Question: What is the status of the PSP program? - Recruitment for the Phase 2b study in PSP has been completed, with data expected in Q3 of this year [30][37]

Core Viewpoint - Shares of Amylyx Pharmaceuticals, Inc. (AMLX) have increased by 26.7% over the past four weeks, closing at $5.36, with a mean price target of $11 indicating a potential upside of 105.2% [1] Price Targets - The average price target consists of five estimates ranging from a low of $8 to a high of $16, with a standard deviation of $3, suggesting a variability in analyst estimates [2] - The lowest estimate indicates a potential increase of 49.3%, while the highest suggests an upside of 198.5% [2] Analyst Consensus and Earnings Estimates - Analysts show strong agreement in revising earnings estimates higher, which is a positive indicator for potential stock upside [4][11] - The Zacks Consensus Estimate for the current year has risen by 4.7% over the past month, with two estimates increasing and no negative revisions [12] - AMLX holds a Zacks Rank 2 (Buy), placing it in the top 20% of over 4,000 ranked stocks based on earnings estimate factors, indicating strong potential for near-term upside [13]

Summary of Amylyx Pharmaceuticals (AMLX) Conference Call Company Overview - **Company**: Amylyx Pharmaceuticals (AMLX) - **Focus**: Development of therapies for rare diseases, particularly those related to hypoglycemia and neurodegenerative conditions Key Points Industry and Product Pipeline - **Lead Program**: Focus on post-bariatric hypoglycemia (PBH) with the drug Vexatide, which has received FDA breakthrough therapy designation [1][16] - **Current Trials**: Phase III trial for Vexatide is ongoing, with recruitment expected to complete by the end of 2025 and data anticipated in the first half of 2026 [2][17] - **Other Programs**: - **AMX-35**: Targets endoplasmic reticulum stress and mitochondrial dysfunction, with promising Phase II data in Wolfram syndrome [2][6] - **AMX-114**: An antisense oligonucleotide targeting calpain 2 in ALS, with early cohort data expected by the end of 2025 [3] Wolfram Syndrome Insights - **Disease Overview**: Wolfram syndrome is a rare genetic disorder characterized by early-onset diabetes, vision loss, and hearing loss, affecting approximately 3,000 people in the U.S. [6][8] - **Clinical Data**: AMX-35 showed stabilization or improvement in insulin production (C-peptide levels) over a year, marking a significant finding in diabetic conditions [7][11] - **FDA Discussions**: Ongoing discussions with the FDA regarding trial design for a Phase III study based on positive data from the HELIOS trial [10][13] Vexatide and PBH - **Patient Population**: Approximately 160,000 people in the U.S. suffer from PBH, with no approved treatments currently available [16][21] - **Phase II Results**: Vexatide demonstrated a 53% reduction in level II hypoglycemic events and a 66% reduction in level III events, indicating significant clinical benefits [19][21] - **Patient Feedback**: High satisfaction rates among trial participants, with most rating their experience positively, highlighting improvements in energy and overall well-being [24][25] Upcoming Data and Market Insights - **Upcoming Presentations**: Data on pharmacokinetics and Phase II modeling will be presented at the Endo conference, providing further insights into Vexatide's efficacy [27][28] - **Market Research**: New abstract on the prevalence of PBH aligns with the company's estimates, reinforcing the market potential for Vexatide [28] Conclusion - **Future Outlook**: The company is optimistic about the potential of Vexatide and AMX-35 to address significant unmet medical needs in their respective patient populations, with ongoing trials and data expected to support their market entry [17][26]

Financial Data and Key Metrics Changes - The company ended the first quarter with a cash position of $204.1 million, which includes approximately $65.5 million in net proceeds from a public offering closed in January 2025 [23] - Total operating expenses for the quarter were $37.8 million, down 82% from the same period in 2024 [25] - Research and development expenses were $22.1 million compared to $36.6 million in Q1 2024, primarily due to decreased spending on AMX-thirty five and reduced payroll costs [25] - Selling, general and administrative expenses were $15.7 million compared to $57.8 million in Q1 2024, mainly due to decreased payroll and consulting costs [25] Business Line Data and Key Metrics Changes - The company is advancing three potential therapies across four clinical trials, including Avexatide for post bariatric hypoglycemia (PBH), AMX-thirty five for Wolfram syndrome and progressive supranuclear palsy (PSP), and AMX-one hundred fourteen for ALS [7][8] - Avexatide has shown promise in treating PBH, with a pivotal Phase III trial (Lucidity) initiated, and the first participant dosed [10][18] - AMX-thirty five is being evaluated in two indications, with positive Phase II data reported for Wolfram syndrome and ongoing trials for PSP [12][14] Market Data and Key Metrics Changes - There are approximately 160,000 people in the U.S. living with PBH, a condition with no approved treatment options [9][19] - The American Society for Metabolic and Bariatric Surgery reported around 270,000 new bariatric surgeries in 2023, indicating a stable market for potential PBH patients [20] - The company estimates that 8% of patients who undergo bariatric surgery will develop PBH within one to three years [48][50] Company Strategy and Development Direction - The company aims to develop novel therapies for diseases with high unmet needs, focusing on execution across its clinical trials [28] - The company is preparing for a potential commercial launch of Avexatide in 2027 if approved [10] - The company is actively engaging with clinical trial sites and expects to complete recruitment for the Lucidity trial by the end of 2025 [22] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in achieving clinical milestones through the end of 2026, supported by a strong cash position [23][24] - The company is focused on educating the medical community and patients about PBH, given the lack of awareness and treatment options [34][46] - Management highlighted the importance of access to treatments for patients suffering from debilitating conditions like PBH [65] Other Important Information - The company plans to present week 48 data from the HELIOS trial in Wolfram syndrome at an upcoming conference [12][28] - The company is preparing for potential FDA discussions regarding trial designs for its various programs [56] Q&A Session Summary Question: Will a large patient education campaign be required for Avexatide? - Management acknowledged the need for education due to the rarity of PBH and the lack of prior treatments, emphasizing the importance of informing both medical professionals and patients [32][34] Question: What is the expected efficacy for the PSP trial? - Management stated the study has 80% power to detect a 30% effect on the PSP rating scale, with multiple endpoints being considered for decision-making [37][39] Question: How many of the 160,000 PBH patients are seeking treatment? - Management indicated that a larger group, potentially up to 1 million, may experience hypoglycemia post-bariatric surgery, but only about 160,000 have persistent symptoms warranting treatment [46][47] Question: What are the remaining questions with the FDA regarding trial design? - Management noted that the week 48 data will inform the Phase III program, but specific details of FDA discussions were not disclosed [56] Question: Will there be subgroup analysis in the Avexatide study? - Management confirmed that the study will focus on a population experiencing frequent hypoglycemic events, with no anticipated step therapy restrictions [61][62] Question: What gives confidence that Avexatide won't cause safety issues? - Management highlighted the good safety profile observed in both non-clinical and clinical data, noting that Avexatide is a competitive antagonist rather than a GLP-1 agonist [70] Question: How does Avexatide compare to other drugs in the space? - Management emphasized Avexatide's strong profile and breakthrough therapy designation, noting that other programs are earlier in development and face hurdles [82][84]