FDA clears Ionis (NASDAQ: IONS) TRYNGOLZA to cut triglycerides and pancreatitis risk
Filing Impact
Filing Sentiment
Form Type
8-K
Rhea-AI Filing Summary
Ionis Pharmaceuticals announced that the FDA has approved TRYNGOLZA (olezarsen) as the first and only treatment indicated to reduce triglycerides and the risk of acute pancreatitis in adults with severe hypertriglyceridemia (sHTG, triglycerides ≥500 mg/dL). The drug is given as a 50 mg or 80 mg once-monthly self-administered autoinjector.
The approval is based on Phase 3 CORE and CORE2 data, where TRYNGOLZA lowered fasting triglycerides by up to 72% versus placebo at six months and sustained reductions at 12 months, reduced acute pancreatitis events by up to 91%, and saw 86% of patients with baseline and 12‑month data reach triglyceride levels below 500 mg/dL. The number needed to treat over one year to prevent one acute pancreatitis episode was 20 in the overall cohort and four in the highest‑risk subgroup. TRYNGOLZA will be available for sHTG in the U.S. in July and represents Ionis’ first independent commercial launch in a prevalent condition.
Positive
- FDA approval of TRYNGOLZA in sHTG gives Ionis the first and only therapy indicated to reduce both triglycerides and acute pancreatitis risk in this population, supported by robust Phase 3 data.
- Strong efficacy profile: TRYNGOLZA lowered fasting triglycerides by up to 72%, reduced acute pancreatitis events by up to 91%, and saw 86% of treated patients with baseline and 12‑month data reach triglyceride levels below 500 mg/dL.
- High-risk patient benefit: The Number Needed to Treat was 20 overall and four in patients with triglycerides ≥880 mg/dL and prior pancreatitis, indicating pronounced clinical benefit in the highest‑risk subgroup.
Negative
- None.
Insights
FDA approval of TRYNGOLZA gives Ionis a first-in-class therapy for a prevalent cardiometabolic condition.
Ionis has secured FDA approval for TRYNGOLZA in adults with severe hypertriglyceridemia, a condition affecting more than 3 million people in the U.S., including about 1 million considered high risk. This is described as the company’s first independent commercial launch in a prevalent disease.
The CORE and CORE2 Phase 3 trials underpin the label. TRYNGOLZA reduced fasting triglycerides by up to 72% versus placebo at six months and maintained these gains at 12 months. It also cut acute pancreatitis events by up to 91%, with 86% of patients with baseline and 12‑month data achieving triglycerides below 500 mg/dL, a key risk threshold.
The Number Needed to Treat over one year to prevent an acute pancreatitis episode was 20 overall and four in patients with triglycerides ≥880 mg/dL and prior pancreatitis, highlighting strong benefit in higher‑risk groups. TRYNGOLZA will be available in July in the U.S. for sHTG, and carries a safety profile where injection site reactions and liver enzyme increases were the most common adverse reactions in sHTG.
8-K Event Classification
3 items: 7.01, 8.01, 9.01
3 items
Item 7.01
Regulation FD Disclosure
Disclosure
Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.
Item 8.01
Other Events
Other
Voluntary disclosure of events the company deems important to shareholders but not covered by other items.
Item 9.01
Financial Statements and Exhibits
Exhibits
Financial statements, pro forma financial information, and exhibit attachments filed with this report.
Key Figures
sHTG prevalence: More than 3 million people
High-risk sHTG population: Approximately 1 million people
TRYNGOLZA dosing: 50 mg or 80 mg
+5 more
8 metrics
sHTG prevalence
More than 3 million people
People living with severe hypertriglyceridemia in the U.S.
High-risk sHTG population
Approximately 1 million people
High-risk severe hypertriglyceridemia in the U.S.
TRYNGOLZA dosing
50 mg or 80 mg
Once-monthly self-administered autoinjector doses
Triglyceride reduction
Up to 72%
Fasting triglyceride reduction vs placebo at six months
Acute pancreatitis reduction
Up to 91%
Reduction in acute pancreatitis events at 12 months
Patients below 500 mg/dL
86%
TRYNGOLZA-treated patients with baseline and 12‑month data
NNT overall cohort
20
Number Needed to Treat over one year to prevent one acute pancreatitis episode
NNT high-risk subgroup
4
Patients with triglycerides ≥880 mg/dL and prior acute pancreatitis
Key Terms
severe hypertriglyceridemia, acute pancreatitis, Number Needed to Treat, familial chylomicronemia syndrome, +2 more
6 terms
severe hypertriglyceridemia medical
"adults with severe hypertriglyceridemia (sHTG: TG greater than or equal to 500 mg/dL)"
An extreme elevation of triglycerides, the fat particles carried in the blood, that can overwhelm the body’s ability to process them and sharply raise the risk of acute pancreatitis and other complications. Think of blood as a river and triglycerides as oil — when levels get too high the flow and nearby organs can be damaged. Investors care because it drives demand for treatments, affects clinical trial safety and regulatory review, and can influence healthcare costs, reimbursement and company valuations.
acute pancreatitis medical
"to reduce triglycerides and the risk of acute pancreatitis in adults with sHTG"
Acute pancreatitis is a sudden inflammation of the pancreas that typically causes severe abdominal pain, nausea and often requires hospitalization; in serious cases it can lead to organ failure or prolonged treatment. Investors should care because sudden spikes in cases or breakthroughs in treatment affect hospital admissions, drug and device demand, insurance payouts and clinical-trial outcomes — like an unexpected house fire that forces emergency repairs and shifts spending priorities.
Number Needed to Treat medical
"The number needed to treat (NNT) over one year to prevent one episode of acute pancreatitis was 20"
Number needed to treat (NNT) measures how many patients must receive a therapy for one person to benefit compared with a control. Think of it like how many umbrellas you’d need to hand out so that one person avoids getting wet; a lower NNT means the treatment helps more people and is generally more valuable. Investors use NNT to judge a drug’s practical effectiveness and market potential relative to competitors.
familial chylomicronemia syndrome medical
"indicated as an adjunct to diet to reduce triglycerides in adults with familial chylomicronemia syndrome (FCS)"
A rare inherited disorder in which the body cannot clear large fat particles from the bloodstream after meals, causing extremely high blood-fat levels and recurrent inflammation of the pancreas, severe abdominal pain, and other complications. It matters to investors because there are few effective treatments, so drugmakers, gene-therapy developers, and diagnostic firms pursuing solutions can see outsized commercial value, regulatory incentives, and volatile stock moves if clinical trials or approvals succeed or fail — like a tiny market where each customer can be highly profitable.
RNA-targeted therapy medical
"TRYNGOLZA (olezarsen) is an RNA-targeted therapy designed to lower the body's production of apoC-III"
RNA-targeted therapy uses molecules that bind to or change RNA — the cell’s instruction copies — to reduce, fix, or alter production of specific proteins linked to disease. For investors, these treatments matter because they can create highly specific drugs with potentially big clinical benefits and market value, but they also carry development, regulatory and manufacturing risks similar to a novel technology bet where clinical trial results and approvals act like make-or-break milestones.
Phase 3 global, multicenter, randomized, double-blind, placebo-controlled trials technical
"CORE and CORE2 are Phase 3 global, multicenter, randomized, double-blind, placebo-controlled trials"
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
Date of report (Date of earliest event reported): June 24, 2026
(Exact Name of Registrant as Specified in Charter)
(State or Other Jurisdiction of Incorporation)
|
|
|
|
(Commission File No.)
|
(IRS Employer Identification No.)
|
(Address of Principal Executive Offices and Zip Code)
Registrant’s telephone number, including area code: (760 ) 931-9200
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following
provisions:
|
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
|
|
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
|
|
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
|
|
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
|
Securities registered pursuant to Section 12(b) of the Act:
|
Title of each class
|
Trading symbol
|
Name of each exchange on which registered
|
||
|
|
“
|
|
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (Section 230.405 of this chapter) or
Rule 12b-2 of the Securities Exchange Act of 1934 (Section 240.12b-2 of this chapter).
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised
financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Item 7.01 Regulation FD Disclosure.
On June 24, 2026, Ionis Pharmaceuticals, Inc. (“Ionis”)
issued a press release announcing that the U.S. Food and Drug Administration (“FDA”) has approved TRYNGOLZA® (olezarsen) as an adjunct to
diet to reduce triglycerides (“TG”) and the risk of acute pancreatitis in adults with severe hypertriglyceridemia (“sHTG”: TG greater than or equal to 500 mg/dL). A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.
The information in this Item 7.01 and the exhibit attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as
amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in
any filing under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such filing.
Item 8.01 Other Events.
On June 24, 2026, Ionis announced that the U.S. FDA has approved TRYNGOLZA® (olezarsen) as an adjunct to diet to reduce triglycerides and the risk of acute
pancreatitis in adults with sHTG. TRYNGOLZA is available in a 50 mg or 80 mg dose and is self-administered once monthly via an autoinjector. sHTG is characterized by an increased risk of acute pancreatitis, which causes debilitating abdominal pain
that often leads to repeated and prolonged hospitalization, permanent organ damage and can be life-threatening.
The FDA approval was based on positive results from the Phase 3 CORE and CORE2 studies, which were published in The New England Journal of Medicine.
In the CORE and CORE2 studies, TRYNGOLZA demonstrated rapid and consistent triglyceride control, lowering fasting triglyceride levels by up to 72% compared to placebo
at six months and sustaining those reductions at 12 months. Additionally, TRYNGOLZA significantly reduced acute pancreatitis events by up to 91%. Among patients treated with TRYNGOLZA with baseline and 12-month data, 86% achieved triglyceride
levels below 500 mg/dL, a critical threshold for reducing acute pancreatitis risk. The number needed to treat (“NNT”) over one year to
prevent one episode of acute pancreatitis was 20 in the overall cohort and four in patients with triglycerides ≥880 mg/dL and a prior history of acute pancreatitis, indicating a strong clinical benefit across the spectrum of sHTG patients and an
exceptional clinical benefit in the highest risk subgroup.
Across the clinical program, TRYNGOLZA demonstrated a favorable safety and tolerability profile. The most common adverse reactions in patients with sHTG (incidence ≥2%
higher than placebo) were injection site reactions and liver enzyme increases.
TRYNGOLZA will be available for sHTG in the U.S. in July.
Forward-Looking Statements
This report includes forward-looking statements regarding Ionis’ business and the therapeutic and commercial potential of TRYNGOLZA, Ionis’ technologies and other
products in development. Any statement describing Ionis’ goals, expectations, financial or other projections, intentions or beliefs is a forward-looking statement and should be considered an at-risk statement. Such statements are subject to certain
risks and uncertainties including those inherent in the process of discovering, developing and commercializing medicines that are safe and effective for use as human therapeutics, and in the endeavor of building a business around such medicines.
Ionis’ forward-looking statements also involve assumptions that, if they never materialize or prove correct, could cause its results to differ materially from those expressed or implied by such forward-looking statements. Although Ionis’
forward-looking statements reflect the good faith judgment of its management, these statements are based only on facts and factors currently known by Ionis. Except as required by law, Ionis undertakes no obligation to update any forward-looking
statements for any reason. As a result, you are cautioned not to rely on these forward-looking statements. These and other risks concerning Ionis’ programs are described in additional detail in Ionis’ annual report on Form 10-K for the year ended
December 31, 2025, and most recent Form 10-Q, which are on file with the Securities and Exchange Commission. Copies of these and other documents are available from the Company.
Item 9.01 Financial Statements and
Exhibits.
(d) Exhibits.
|
Exhibit No.
|
Description
|
|
|
99.1
|
Press Release dated June 24, 2026.
|
|
|
104
|
Cover Page Interactive Data File (embedded within the Inline XBRL document).
|
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its
behalf by the undersigned, thereunto duly authorized.
|
Ionis Pharmaceuticals, Inc.
|
|||
|
Dated: June 24, 2026
|
By:
|
/s/ Patrick R. O’Neil
|
|
|
Patrick R. O’Neil
|
|||
|
Executive Vice President, Chief Legal Officer
and General Counsel
|
|||
Exhibit 99.1
TRYNGOLZA® (olezarsen) approved by the FDA as the first and only treatment to reduce triglycerides and the risk of acute pancreatitis in
patients with severe hypertriglyceridemia (sHTG)
– Proven to deliver significant and robust triglyceride reductions –
– Only treatment for sHTG indicated to reduce the risk of acute pancreatitis –
– Ionis’ first independent commercial launch in a prevalent condition –
– Ionis to host webcast today at 3:30 p.m. ET –
CARLSBAD, Calif., June 24, 2026 -- Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced that the U.S. Food and Drug Administration (FDA) has approved TRYNGOLZA®
(olezarsen) as an adjunct to diet to reduce triglycerides (TG) and the risk of acute pancreatitis in adults with severe hypertriglyceridemia (sHTG: TG greater than or equal to 500 mg/dL). TRYNGOLZA is available in a 50 mg or 80 mg dose and is
self-administered once monthly via an autoinjector. sHTG is characterized by an increased risk of acute pancreatitis, which causes debilitating abdominal pain that often leads to repeated and prolonged hospitalization, permanent organ damage and
can be life-threatening.
“The approval of TRYNGOLZA marks an historic advance for people who have long struggled to control their dangerously high triglycerides, providing the only approved
therapy for sHTG to dramatically lower triglyceride levels and significantly reduce acute pancreatitis events,” said Brett P. Monia, Ph.D., chief executive officer, Ionis. “TRYNGOLZA reflects the strength of Ionis’ innovative science and our
commitment to transforming patients’ lives. As our first independent launch in a prevalent disease, this milestone builds on our success in familial chylomicronemia syndrome, a rare form of sHTG, and marks a defining moment for Ionis as we bring
our groundbreaking medicines to even more patients in need. We are deeply grateful to the clinical trial participants, investigators, the Ionis team and many others whose dedication made this achievement possible.”
“As a physician, I have seen firsthand how challenging it can be for patients with sHTG to lower their triglycerides below 500 mg/dL, despite background lipid-lowering
therapies and lifestyle changes, which leaves them at risk of a devastating and potentially life-threatening acute pancreatitis attack,” said Archna Bajaj, M.D., assistant professor of clinical medicine, University of Pennsylvania. “TRYNGOLZA is a
transformational new therapy that showed unprecedented, clinically meaningful outcomes for sHTG, with the potential to redefine the treatment paradigm.”
The FDA approval was based on positive results from the Phase 3 CORE and CORE2 studies, which were published
in The New England Journal of Medicine.
In the CORE and CORE2 studies, TRYNGOLZA demonstrated rapid and consistent triglyceride control, lowering fasting triglyceride levels by up to 72% compared to placebo at
six months and sustaining those reductions at 12 months. Additionally, TRYNGOLZA significantly reduced acute pancreatitis events by up to 91%. Among patients treated with TRYNGOLZA with baseline and 12-month data, 86% achieved triglyceride levels
below 500 mg/dL, a critical threshold for reducing acute pancreatitis risk. The number needed to treat (NNT) over one year to prevent one episode of acute pancreatitis was 20 in the overall cohort and four in patients with triglycerides ≥880 mg/dL
and a prior history of acute pancreatitis, indicating a strong clinical benefit across the spectrum of sHTG patients and an exceptional clinical benefit in the highest risk subgroup.1
Across the clinical program, TRYNGOLZA demonstrated a favorable safety and tolerability profile. The most common adverse reactions in patients with sHTG (incidence ≥2%
higher than placebo) were injection site reactions and liver enzyme increases.
"With limited options to lower triglycerides, people living with sHTG often face a constant and real fear that a debilitating acute pancreatitis attack could strike at
any time without warning,” said Emily Draud, interim executive director, National Pancreas Foundation. “The availability of TRYNGOLZA for sHTG represents an important new option for this community, offering hope for people who have been waiting for
a new treatment to reduce the risk of acute pancreatitis by significantly lowering their triglyceride levels. It also underscores the urgent need for continued innovation and improved care for patients living with this serious condition."
Ionis is committed to helping people access the medicines they are prescribed and will offer a full suite of services for people prescribed TRYNGOLZA through Ionis Every
Step™. Ionis Every Step offers personal support, including nutrition information and injection training, insurance support and financial assistance programs. Visit TRYNGOLZA.com
for more information.
TRYNGOLZA will be available for sHTG in the U.S. in July.
Webcast
Ionis will hold a webcast today at 3:30 p.m. ET to discuss the FDA approval. Interested parties may access the webcast here. A webcast replay will be available for a limited time.
INDICATIONS
Familial Chylomicronemia Syndrome (FCS)
TRYNGOLZA (olezarsen) is indicated as an adjunct to diet to reduce triglycerides (TG) in adults with familial chylomicronemia syndrome (FCS).
Severe Hypertriglyceridemia (sHTG)
TRYNGOLZA is indicated as an adjunct to diet to reduce TG and the risk of acute pancreatitis in adults with severe hypertriglyceridemia (sHTG: TG ≥500 mg/dL).
1 What are poor, acceptable, and great Number Needed to Treat (NNT) figures? Dr. Oracle. AI. Updated December 13, 2025. Accessed May 8, 2026.
https://www.droracle.ai/articles/612269/what-are-poor-acceptable-and-great-number-needed-to
IMPORTANT SAFETY INFORMATION
CONTRAINDICATIONS
TRYNGOLZA is contraindicated in patients with a history of serious hypersensitivity to TRYNGOLZA or any of the excipients in TRYNGOLZA. Hypersensitivity reactions
requiring medical treatment have occurred.
WARNINGS AND PRECAUTIONS
Hypersensitivity Reactions
Hypersensitivity reactions (including symptoms of bronchospasm, diffuse erythema, facial swelling, urticaria, chills, and myalgias) have been reported in patients treated
with TRYNGOLZA. Advise patients on the signs and symptoms of hypersensitivity reactions and instruct patients to promptly seek medical attention and discontinue use of TRYNGOLZA if hypersensitivity reactions occur.
Liver Enzyme Abnormalities
TRYNGOLZA can cause increases in liver enzymes and hepatic fat in adults. Increases in liver enzymes were more frequently reported with the 80 mg dose as compared with
the 50 mg dose. Consider liver enzyme testing before TRYNGOLZA initiation or an increase in dosage and when clinically indicated thereafter. If persistent elevations in liver enzymes occur, consider dose interruption and/or dose reduction. If
serious hepatic injury with clinical symptoms and/or hyperbilirubinemia or jaundice occurs, promptly discontinue TRYNGOLZA.
ADVERSE REACTIONS
Adverse Reactions for FCS
Most common adverse reactions in patients with FCS (incidence >5% of TRYNGOLZA-treated patients and >3% higher frequency than placebo) were injection site
reactions, decreased platelet count, and arthralgia.
Adverse Reactions for sHTG
Most common adverse reactions in patients with sHTG (incidence ≥2% higher than placebo) were injection site reactions and liver enzyme increases.
Please see full Prescribing Information for TRYNGOLZA. Please see
Important Safety Information throughout and full Prescribing Information for TRYNGOLZA.
About the CORE and CORE2 Studies
CORE (NCT05079919; n=617) and CORE2 (NCT05552326; n=446), conducted with The TIMI Study Group, are Phase 3 global, multicenter, randomized, double-blind, placebo-controlled trials investigating the safety and efficacy of olezarsen for severe
hypertriglyceridemia (sHTG). Participants aged 18 and older with triglyceride levels ≥500 mg/dL were enrolled. Participants were required to be on standard of care therapies for elevated triglycerides. At baseline, 47% and 37% of participants had
fasting triglycerides ≥880 mg/dL in CORE and CORE2, respectively. Participants were randomized to receive 50 mg or 80 mg of olezarsen or placebo every four weeks via subcutaneous injection for 12 months.
The CORE and CORE2 studies met the primary endpoint, with both 50 mg and 80 mg monthly TRYNGOLZA doses. TRYNGOLZA demonstrated a statistically significant reduction in
fasting triglycerides of 49%-63% (50 mg) and 55%-72% (80 mg) compared to placebo at six months. Additionally, TRYNGOLZA demonstrated a statistically significant 91% (50 mg) and 76% (80 mg) reduction in acute pancreatitis events at 12 months, with a
pooled reduction of 85%.
About Severe Hypertriglyceridemia
Severe hypertriglyceridemia (sHTG) is defined by very high triglycerides (≥500 mg/dL) and characterized by an increased risk of acute pancreatitis and other serious
health complications. Considered a medical emergency, acute pancreatitis causes debilitating abdominal pain that often requires prolonged hospitalization, can lead to permanent organ damage and can become life-threatening. Preventing the first
attack is key. In people with a history of acute pancreatitis episodes, the risk of future attacks is even greater. Current standard of care therapies for sHTG and lifestyle modifications (such as diet and exercise) do not sufficiently or
consistently lower triglyceride levels or reduce the risks of sHTG in all patients. More than 3 million people are living with sHTG in the U.S., including approximately 1 million who are considered high risk. High-risk sHTG includes those with
triglycerides ≥880 mg/dL or triglycerides ≥500 mg/dL and a history of acute pancreatitis or other comorbidities.
About TRYNGOLZA® (olezarsen)
TRYNGOLZA® (olezarsen) is an RNA-targeted therapy designed to lower the body's production of apoC-III, a protein produced in the liver that regulates
triglyceride metabolism in the blood. TRYNGOLZA is approved in the United States as an adjunct to diet to reduce triglycerides (TG) and the risk of acute pancreatitis in adults with severe hypertriglyceridemia (sHTG: TG greater than or equal to 500
mg/dL). TRYNGOLZA is also approved in the United States, European Union and other countries for adults with familial chylomicronemia syndrome (FCS), a rare form of sHTG. Visit TRYNGOLZA.com
for more information.
About Ionis Pharmaceuticals, Inc.
For three decades, Ionis has invented medicines that bring better futures to people with serious diseases. Ionis currently has marketed medicines and a leading pipeline
in neurology, cardiometabolic disease and select areas of high patient need. As the pioneer in RNA-targeted medicines, Ionis continues to drive innovation in RNA therapies in addition to advancing new approaches in gene editing. A deep
understanding of disease biology and industry-leading technology propels our work, coupled with a passion and urgency to deliver life-changing advances for patients. To learn more about Ionis, visit Ionis.com and follow us on X (Twitter), LinkedIn and Instagram.
Ionis Forward-looking Statements
This press release includes forward-looking statements regarding Ionis' business and the therapeutic and commercial potential of TRYNGOLZA, Ionis' technologies and other
products in development. Any statement describing Ionis' goals, expectations, financial or other projections, intentions or beliefs is a forward-looking statement and should be considered an at-risk statement. Such statements are subject to certain
risks and uncertainties including those inherent in the process of discovering, developing and commercializing medicines that are safe and effective for use as human therapeutics, and in the endeavor of building a business around such medicines.
Ionis' forward-looking statements also involve assumptions that, if they never materialize or prove correct, could cause its results to differ materially from those expressed or implied by such forward-looking statements. Although Ionis'
forward-looking statements reflect the good faith judgment of its management, these statements are based only on facts and factors currently known by Ionis. Except as required by law, we undertake no obligation to update any forward-looking
statements for any reason. As a result, you are cautioned not to rely on these forward-looking statements. These and other risks concerning Ionis' programs are described in additional detail in Ionis' annual report on Form 10-K for the year ended
December 31, 2025, and most recent Form 10-Q, which are on file with the Securities and Exchange Commission. Copies of these and other documents are available from the Company. In this press release, unless the context requires otherwise, "Ionis,"
"Company," "we," "our" and "us" all refer to Ionis Pharmaceuticals and its subsidiaries.
Ionis Pharmaceuticals® and TRYNGOLZA® are trademarks of Ionis Pharmaceuticals, Inc.
Ionis Investor Contact:
D. Wade Walke, Ph.D.
IR@ionis.com 760-603-2331
Ionis Media Contact:
Hayley Soffer
media@ionis.com 760-603-4679
###
FAQ
What did the FDA approve for Ionis Pharmaceuticals (IONS) in this 8-K?
The FDA approved TRYNGOLZA (olezarsen) as an adjunct to diet to reduce triglycerides and the risk of acute pancreatitis in adults with severe hypertriglyceridemia (sHTG, triglycerides ≥500 mg/dL). This represents the first and only treatment with this specific indication for sHTG patients.
How effective is TRYNGOLZA according to Ionis Pharmaceuticals’ filing?
TRYNGOLZA lowered fasting triglyceride levels by up to 72% versus placebo at six months and maintained reductions at 12 months. It also reduced acute pancreatitis events by up to 91%, and 86% of patients with baseline and 12‑month data achieved triglyceride levels below 500 mg/dL.
What is the dosing regimen for TRYNGOLZA in severe hypertriglyceridemia?
TRYNGOLZA is available as a 50 mg or 80 mg dose and is self-administered once monthly via an autoinjector. Patients receive the drug as an adjunct to diet to manage triglyceride levels and reduce acute pancreatitis risk in severe hypertriglyceridemia.
What does the Number Needed to Treat (NNT) show for TRYNGOLZA in sHTG?
The Number Needed to Treat over one year to prevent a single acute pancreatitis episode was 20 in the overall cohort. In patients with triglycerides ≥880 mg/dL and prior acute pancreatitis, the NNT was four, indicating particularly strong benefit in this highest‑risk subgroup.
What safety profile did TRYNGOLZA show in Ionis’ clinical program?
Across the clinical program, TRYNGOLZA demonstrated a favorable safety and tolerability profile. In sHTG patients, the most common adverse reactions, occurring at least 2% more often than placebo, were injection site reactions and liver enzyme increases, which are highlighted in the safety information.
When will TRYNGOLZA be available in the U.S. for severe hypertriglyceridemia?
TRYNGOLZA will be available in the United States for adults with severe hypertriglyceridemia starting in July. The therapy is positioned as Ionis’ first independent commercial launch in a prevalent condition, expanding its marketed portfolio beyond rarer lipid disorders.
How large is the U.S. patient population for severe hypertriglyceridemia mentioned by Ionis?
More than 3 million people in the U.S. are described as living with severe hypertriglyceridemia, including about 1 million considered high risk. High-risk patients include those with triglycerides ≥880 mg/dL or triglycerides ≥500 mg/dL plus prior acute pancreatitis or other comorbidities.