Ionis stock soars after olezarsen shows 85% reduction in pancreatitis events

Published 02/09/2025, 12:40
© Reuters.

Investing.com -- Ionis Pharmaceuticals, Inc. (NASDAQ:IONS) stock rose 22% after the company reported positive topline results from its pivotal Phase 3 CORE and CORE2 studies of olezarsen in patients with severe hypertriglyceridemia (sHTG).

The studies showed that olezarsen significantly reduced fasting triglycerides by up to 72% compared to placebo and demonstrated an 85% reduction in acute pancreatitis events. This marks the first and only time such a reduction in pancreatitis events has been achieved for sHTG treatment.

In the CORE study, olezarsen at 80mg and 50mg monthly doses reduced triglycerides by 73% and 63% from baseline respectively, compared to just 0.5% for placebo. The CORE2 study showed similar results with 68% and 63% reductions at the same dosage levels versus 14% for placebo.

The drug demonstrated a favorable safety profile, with adverse events generally balanced across treatment groups. Injection site reactions, mostly mild, were the most common side effect. More than 90% of patients who completed the studies chose to continue into the open-label extension study.

"These data are groundbreaking, demonstrating that olezarsen is the first therapy for sHTG to significantly reduce acute pancreatitis events," said Sam Tsimikas, senior vice president of global cardiovascular development at Ionis.

The company plans to submit a supplemental new drug application to the FDA by the end of this year. If approved, olezarsen for sHTG would mark Ionis’ third independent product launch in under two years.

Detailed results from the studies, which included nearly 1,100 patients on standard of care lipid-lowering therapy, will be presented at an upcoming medical conference.

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.