Alector Discontinues Mid-Stage Alzheimer’s Trial for Latozinemab
Written by Emily J. Thompson, Senior Investment Analyst
Updated: Apr 30 2026
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Should l Buy ALEC?
Source: seekingalpha
- Trial Discontinuation: Alector announced the discontinuation of its mid-stage trial for latozinemab after recommendations from its independent data monitoring committee, indicating that the 76-week global study was unlikely to meet its primary endpoint of slowing disease progression, resulting in a ~5% rise in stock price.
- Partnership Impact: The PROGRESS-AD trial was a key component of Alector's collaboration with GSK, and its discontinuation highlights the challenges faced by Alector following last year's Phase 3 trial failure for another form of dementia, raising concerns about the viability of their pipeline.
- Commitment to Future Development: Despite the trial's halt, CEO Arnon Rosenthal emphasized Alector's commitment to advancing its broader pipeline targeting neurodegenerative diseases, including multiple wholly owned candidates enabled by their ABC platform, showcasing confidence in future research endeavors.
- Market Reaction Analysis: Alector's stock price increase following the trial discontinuation reflects investor trust in the company's other research projects, indicating that despite setbacks, the market remains optimistic about its potential in the neuroscience field.
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Analyst Views on ALEC
Wall Street analysts forecast ALEC stock price to fall
8 Analyst Rating
1 Buy
5 Hold
2 Sell
Hold
Current: 2.440
Low
0.90
Averages
2.10
High
5.00
Current: 2.440
Low
0.90
Averages
2.10
High
5.00
About ALEC
Alector, Inc. is a clinical-stage biotechnology company. The Company is focused on developing therapies to counteract the devastating progression of neurodegenerative diseases. It also develops alector brain carrier (ABC), a proprietary blood-brain barrier platform, which is applied to its next-generation product candidates and research pipeline. Its research and drug discovery platform leverages human genetic datasets, advanced tools in bioinformatics and imaging, and insights in neurodegeneration. Its clinical development portfolio includes latozinemab (AL001) and AL101/GSK4527226, while its preclinical and research pipeline candidates include ADP037-ABC, ADP050-ABC, ADP056, and ADP063-ABC/ADP064-ABC. Its first product candidate, latozinemab, is a human recombinant monoclonal antibody that increases the levels of progranulin (PGRN) in the brains of FTD-GRN patients. The AL101/GSK4527226, is a human recombinant monoclonal antibody designed to elevate PGRN levels in the brain.
About the author

Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
- Trial Discontinuation: Alector announced the discontinuation of its mid-stage trial for latozinemab after recommendations from its independent data monitoring committee, indicating that the 76-week global study was unlikely to meet its primary endpoint of slowing disease progression, resulting in a ~5% rise in stock price.
- Partnership Impact: The PROGRESS-AD trial was a key component of Alector's collaboration with GSK, and its discontinuation highlights the challenges faced by Alector following last year's Phase 3 trial failure for another form of dementia, raising concerns about the viability of their pipeline.
- Commitment to Future Development: Despite the trial's halt, CEO Arnon Rosenthal emphasized Alector's commitment to advancing its broader pipeline targeting neurodegenerative diseases, including multiple wholly owned candidates enabled by their ABC platform, showcasing confidence in future research endeavors.
- Market Reaction Analysis: Alector's stock price increase following the trial discontinuation reflects investor trust in the company's other research projects, indicating that despite setbacks, the market remains optimistic about its potential in the neuroscience field.
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- Platform Potential: Cantor Fitzgerald upgraded Alector (ALEC) from Neutral to Overweight, highlighting the significant potential value of its blood-brain barrier technology platform (ABC), which could position the company as a major player in the neurodegenerative disease space.
- Resource Reallocation: Following discussions with Alector executives, the company decided to prioritize resources towards the ABC platform to support the delivery of brain-targeting therapies, reflecting its commitment to this technology.
- Positive Market Reaction: Alector's shares rose after the upgrade, indicating investor confidence in its BBB-crossing technology, although the current market does not fully reflect the value of the ABC platform.
- Future Outlook: Analysts noted that the potential of Alector's ABC platform in neurodegenerative drug development is not yet fully recognized by the market, suggesting significant business growth opportunities ahead.
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- Upgrade Impact: Alector shares rose approximately 15% following BRIG's upgrade from Neutral to Buy, indicating positive market sentiment towards the company's strategic pivot towards its blood-brain barrier technology platform.
- Strategic Shift: After a late-stage trial setback for the dementia treatment latozinemab developed with GSK, Alector announced a resource reallocation to its BBB technology platform, Alector Brain Carrier, reflecting a reassessment of its future therapeutic strategies.
- Workforce Reduction and Project Adjustments: The failure of the INFRONT-3 clinical trial forced Alector to cut nearly 49% of its workforce and halt the open-label extension of INFRONT-3 and the continuation study for latozinemab, which, while impacting operations in the short term, allows for a focused approach moving forward.
- Analyst Optimism: BTIG analyst Thomas Shrader noted that Alector's new direction alleviates concerns following the FTD trial failure, setting a new price target of $6 per share, suggesting a bullish outlook on the company's future developments.
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- Analyst Rating Changes: Top Wall Street analysts have adjusted their ratings on several companies, reflecting varying market perspectives that could influence investor decisions and market trends.
- Upgrades and Downgrades: The rating changes include upgrades and downgrades for certain stocks, prompting investors to pay attention to these shifts to assess potential investment opportunities and risks.
- Market Reaction Expectations: Analysts' rating adjustments may lead to short-term volatility in the affected stocks, necessitating investors to closely monitor market dynamics to seize investment opportunities.
- Information Source: A complete view of all analyst rating changes can be found on Benzinga's analyst ratings page, providing crucial insights for investor decision-making.
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