CARLSBAD - Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) (the 'Company'), today reported financial results for the third quarter of 2023.

'We continue to successfully execute on our strategy to deliver a steady cadence of potentially transformational medicines to patients,' said Brett P. Monia, Ph.D., chief executive officer of Ionis. 'Eplontersen is on track for its first potential approval in the U.S. and is under regulatory review in the EU and Canada. We believe the positive efficacy and safety data coupled with an attractive self-administration dosing profile positions eplontersen to be the preferred therapy in the largely underserved hereditary ATTR polyneuropathy population. We reported positive data from the olezarsen Phase 3 Balance study in patients with familial chylomicronemia syndrome, showing statistically significant triglyceride lowering, substantial reductions in acute pancreatitis attacks and favorable safety and tolerability, positioning olezarsen to be our first independent commercial launch. We also made additional progress across our wholly owned and partnered pipeline, and further expanded our rich Phase 3 pipeline with the advance of zilganersen for patients with Alexander disease into Phase 3 development. Looking ahead, we expect to continue our positive momentum with the potential approval and launch of eplontersen and the Phase 3 data readout of donidalorsen in hereditary angioedema.'

Financial Highlights

Revenue continued to be substantial and sustained, with revenues of $144 million and $463 million in the three and nine months ended September 30, 2023, reflecting a 10% decrease and 6% increase compared to the same periods last year, respectively, driven by the timing of certain partner payments

Operating expenses increased in the three and nine months ended September 30, 2023 compared to the same periods last year, primarily due to strategic investments to bring eplontersen, olezarsen and donidalorsen to patients

Cash and short-term investments of $2.2 billion as of September 30, 2023 enables continued investments to drive increasing value

Reaffirmed 2023 financial guidance

About Ionis Pharmaceuticals, Inc.

For more than 30 years, Ionis has been a leader in RNA-targeted therapy, pioneering new markets and changing standards of care. Ionis currently has four marketed medicines and a promising late-stage pipeline highlighted by cardiovascular and neurological franchises. Our scientific innovation began and continues with the knowledge that sick people depend on us, which fuels our vision to become the leader in genetic medicine, utilizing a multi-platform approach to discover, develop and deliver life-transforming therapies.

Ionis Forward-looking Statement

This press release includes forward-looking statements regarding Ionis' business, financial guidance and the therapeutic and commercial potential of QALSODY (tofersen), SPINRAZA (nusinersen), TEGSEDI (inotersen), WAYLIVRA (volanesorsen), eplontersen, olezarsen, donidalorsen, zilganersen, ulefnersen, pelacarsen, bepirovirsen, IONIS-FB-LRx, Ionis' technologies and Ionis' 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. 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, 2022, 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.

Contact:

D. Wade Walke

Email: info@ionisph.com

Tel: 760-603-2331

(C) 2023 Electronic News Publishing, source ENP Newswire