Citi cuts Acelyrin stock target amid uncertainty in Phase 3 program

Published 07/01/2025, 15:04
Citi cuts Acelyrin stock target amid uncertainty in Phase 3 program

On Tuesday, Citi analyst Samantha Semenkow adjusted the price target for Acelyrin Inc (NASDAQ:SLRN) to $3.00, a decrease from the previous $6.00, while maintaining a Neutral rating on the company's shares.

This revision follows Acelyrin's recent presentation of Phase 1b/2 dose-finding efficacy and safety data for lonigutamab, a subcutaneous anti-IGF1R treatment for Thyroid Eye Disease (TED) patients, and the unveiling of the Phase 3 LONGITUDE program's trial design.

The company's shares have shown weakness following the announcement of the Phase 3 dosing regimen, which will be every two weeks (Q2W), as opposed to a competitor's program that offers dosing every four or eight weeks (Q4W/Q8W). The market's reaction is partly due to the uncertainty about the efficacy expectations for a Phase 3 dose that was not tested in the Phase 1b/2 study.

Despite the concerns, the safety profile of lonigutamab appeared clean, potentially providing a competitive edge, as no issues such as hearing impairment, hyperglycemia, or elevation of circulating IGF1 were reported. Furthermore, the Phase 3 study design includes continued dosing for longer than 24 weeks, which could potentially offer a commercial advantage.

However, Citi anticipates that several factors will continue to pressure Acelyrin's stock. These include the absence of near-term catalysts until the Phase 3 lonigutamab data is available in the second half of 2026, the significant capital required to conduct two Phase 3 TED trials, and competitive concerns within the market.

In conclusion, the new price target of $3.00 reflects a $3 decrease from the previous target, with Citi reiterating a Neutral/High Risk rating on Acelyrin stock. The firm's analysis suggests that while there is value in continuing the development of lonigutamab, the combination of anticipated heavy investment, competitive landscape, and a lack of immediate catalysts may continue to impact the share price.

This article was generated with the support of AI and reviewed by an editor. For more information see our T&C.

Latest comments

Risk Disclosure: Trading in financial instruments and/or cryptocurrencies involves high risks including the risk of losing some, or all, of your investment amount, and may not be suitable for all investors. Prices of cryptocurrencies are extremely volatile and may be affected by external factors such as financial, regulatory or political events. Trading on margin increases the financial risks.
Before deciding to trade in financial instrument or cryptocurrencies you should be fully informed of the risks and costs associated with trading the financial markets, carefully consider your investment objectives, level of experience, and risk appetite, and seek professional advice where needed.
Fusion Media would like to remind you that the data contained in this website is not necessarily real-time nor accurate. The data and prices on the website are not necessarily provided by any market or exchange, but may be provided by market makers, and so prices may not be accurate and may differ from the actual price at any given market, meaning prices are indicative and not appropriate for trading purposes. Fusion Media and any provider of the data contained in this website will not accept liability for any loss or damage as a result of your trading, or your reliance on the information contained within this website.
It is prohibited to use, store, reproduce, display, modify, transmit or distribute the data contained in this website without the explicit prior written permission of Fusion Media and/or the data provider. All intellectual property rights are reserved by the providers and/or the exchange providing the data contained in this website.
Fusion Media may be compensated by the advertisers that appear on the website, based on your interaction with the advertisements or advertisers
© 2007-2025 - Fusion Media Limited. All Rights Reserved.