Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today reported its financial results for the second quarter of 2021 and recent business achievements.

'Since our last quarterly update, we continued to execute on our strategic objectives to prepare for multiple Ionis commercial launches, expand our drug delivery capabilities and advance new products towards the market. Biogen completed dosing in the tofersen Phase 3 VALOR study and began offering tofersen to SOD1-ALS patients on an individual compassionate use basis. We achieved full enrollment in the eplontersen Phase 3 NEURO-TTRansform study and 50 percent enrollment in the pelacarsen Phase 3 Lp(a) HORIZON study. Additionally, we licensed Bicycle Therapeutics' technology to expand the capabilities of our LICA technology,' said Brett P. Monia, Ph.D., chief executive officer of Ionis. 'Looking ahead, we expect data from multiple pipeline programs, including additional data supporting the potential for our IONIS-PKK-LRx program to change the standard of care for patients with hereditary angioedema. And by this fall, we expect data from the Phase 3 VALOR study of tofersen in patients with SOD1-ALS. If results from the VALOR study are positive, we expect tofersen to be our next commercial medicine. These key recent achievements and upcoming catalysts keep us on track for a regular cadence of Phase 3 data and new drug applications, leading to 12 or more products on the market in 2026.'

Second Quarter 2021 and Recent Summary Financial Results

Second quarter results reflect focus on Ionis' strategic objectives o $126 million in total revenues

$154 million of operating expenses on a non-GAAP basis(1) and $199 million on a GAAP basis

Net loss of $36 million on a non-GAAP basis(1) and $81 million on a GAAP basis

Well capitalized with cash and investments of $2.1 billion at the end of the second quarter

'In addition to advancing our pipeline and expanding our drug discovery capabilities, we have taken multiple steps to streamline our operations in support of our wholly owned medicines. We have completed the integration of Akcea, entered distribution arrangements with Sobi and restructured our commercial operations. These steps enabled us to unlock significant resources that we are redirecting towards our highest priority programs,' said Elizabeth L. Hougen, chief financial officer of Ionis. 'We remain on track to achieve our 2021 revenue guidance of more than $600 million. We continue to expect increased R&D revenue in the second half of this year. Already in the third quarter, we earned $25 million from Novartis for the pelacarsen enrollment milestone. We are revising our 2021 operating expense and net loss guidance because of our license of Bicycle's technology. Importantly, we remain well-capitalized with the resources we need to achieve our strategic objectives.'

Operating Expenses

Ionis' operating expenses for the second quarter of 2021 increased slightly compared to the same period last year driven by an increase in R&D expenses, partially offset by a decrease in SG&A expenses. Ionis' increased R&D expenses were primarily driven by the Company's investments in advancing its late-stage wholly owned pipeline. Ionis' decreased SG&A expenses were primarily from operating efficiencies achieved from integrating Akcea and restructuring the Company's commercial operations.

Net Loss Attributable to Ionis Common Stockholders

Ionis' net loss attributable to Ionis' common stockholders for the second quarter of 2021 increased compared to the same period in the prior year for the reasons discussed above. Additionally, the Company recognized an $8.6 million non-cash loss from the early retirement of a significant portion of its 1 percent senior convertible notes.

Balance Sheet

Ionis ended June 2021 with cash, cash equivalents and short-term investments of $2.1 billion, compared to $1.9 billion at December 31, 2020. In April 2021, Ionis issued $632.5 million of 0 percent senior convertible notes due in April 2026 and repurchased $247.9 million of its 1 percent senior convertible notes. The Company's remaining $62 million of 1 percent senior convertible notes mature in November 2021.

The Company revised its 2020 amounts to reflect the simplified convertible instruments guidance the Company adopted retrospectively on January 1, 2021.

Webcast

Today, at 11:30 a.m. Eastern Time, Ionis will conduct a live webcast to discuss this earnings release and related activities. Interested parties may access the webcast here. A webcast replay will be available for a limited time at the same address.

About Ionis Pharmaceuticals, Inc.

For more than 30 years, Ionis has been the leader in RNA-targeted therapy, pioneering new markets and changing the standards of care with its novel antisense technology. Ionis currently has three marketed medicines and a premier late-stage pipeline highlighted by industry leading neurological and cardiometabolic franchises. Our scientific innovation began and continues with the knowledge that sick people depend on us, which fuels our vision of becoming one of the most successful biotechnology companies.

Ionis' Forward-looking Statement

This press release includes forward-looking statements regarding Ionis' business, financial guidance and the therapeutic and commercial potential of SPINRAZA (nusinersen), TEGSEDI (inotersen) and WAYLIVRA (volanesorsen) and Ionis' technologies and 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 related to the impact COVID-19 could have on our business, and 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, 2020, and the most recent Form 10-Q quarterly filing, which are on file with the SEC. 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' refers to Ionis Pharmaceuticals and its subsidiaries.

Contact:

Tel: 760-603-2681

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