AlloVir Reports Third Quarter 2023 Financial Results

-- Posoleucel, a highly innovative off-the-shelf, multi-virus-specific investigational T cell therapy, continues to advance in three distinct, Phase 3, first-to-market indications in immunocompromised patients

-- Enrollment in posoleucel pivotal Phase 3 multi-virus prevention, virus-associated hemorrhagic cystitis and adenovirus studies all progressing with topline data for all three studies anticipated in the second half of 2024

--Progressing global commercial launch planning for posoleucel across all indications

-- As of September 30, 2023, AlloVir had cash, cash equivalents, and short-term investments of $213.3 million providing runway through all pivotal trial data readouts

AlloVir, Inc. (NASDAQ:ALVR), a late-clinical stage allogeneic T cell immunotherapy company, today reported financial results from the third quarter ended September 30, 2023. AlloVir continues to progress its highly innovative lead therapeutic candidate, posoleucel, by enrolling globally in three Phase 3 trials for first-to-market indications. AlloVir is in a position of strength with significant financial resources to support operations through topline data readouts for all three trials anticipated in the second half of 2024.

"At AlloVir, we are dedicated to serving immunocompromised patients suffering from devastating and life-threatening viral diseases," said Diana Brainard, M.D., Chief Executive Officer, AlloVir. "We are working with urgency to complete enrollment in our three global Phase 3 pivotal trials of posoleucel to deliver this potentially transformative therapy to patients that can benefit from the prevention and treatment of viral diseases with limited to no approved or effective therapies today. We expect a catalyst rich next 12 months with clinical and regulatory milestones and continued commercial preparations in advance of a potential 2025 launch."

Recent and Upcoming Highlights/Activities

• The company's Phase 3 registrational trials of posoleucel in allo-HCT patients continue to enroll with data anticipated from all three trials in the second half of 2024.
• The company presented results from a Phase 2 randomized, placebo-controlled trial evaluating posoleucel for the treatment of BKV in adult kidney transplant recipients at the European Society for Organ Transplantation (ESOT) Congress 2023 in September.
• The company continues to work with regulatory agencies to gain alignment on a Phase 3 clinical study design to evaluate posoleucel's treatment of BKV infection in kidney transplant patients.
• The company completed enrollment in Part A of the Phase 1b/2a clinical trial of ALVR106, a multi-respiratory virus-specific T cell therapy targeting human metapneumovirus, influenza, parainfluenza, and respiratory syncytial virus (RSV) in allo-HCT and solid organ transplant patients. Data will be shared at a future scientific congress.

Third Quarter Financial Results

• Research and development expenses were $34.2 million for the quarter ended September 30, 2023, compared with $30.0 million for the quarter ended September 30, 2022. The increase year-over-year was primarily attributable to an increase in costs related to the development of the company's lead product candidate, posoleucel.
• General and administrative expenses were consistent at $12.8 million for the quarter ended September 30, 2023, compared with $12.9 million for the quarter ended September 30, 2022.
• Stock-based compensation expenses were $10.5 million and $10.9 million for the quarter ended September 30, 2023, and 2022, respectively.
• As of September 30, 2023, AlloVir had cash, cash equivalents, and short-term investments of $213.3 million, compared with cash, cash equivalents, and short-term investments of $233.8 million as of December 31, 2022.
• For the quarter ended September 30, 2023, net loss was $44.3 million or $0.39 per share compared with a net loss of $42.1 million or $0.50 per share for the quarter ended September 30, 2022.

2023 Financial Guidance

• For fiscal year 2023, AlloVir expects operating expenses to be in the range of $150 million to $170 million, excluding non-cash expenses.

About Posoleucel

AlloVir's lead product, posoleucel, is in late-stage clinical development as an allogeneic, off-the-shelf, multi-virus-specific T cell therapy targeting six viral pathogens in immunocompromised individuals: adenovirus (AdV), BK virus (BKV), cytomegalovirus (CMV), Epstein-Barr virus (EBV), human herpesvirus-6 (HHV-6) and JC virus (JCV). In a Phase 2 open-label study of posoleucel for the prevention of clinically significant infections due to the six viruses posoleucel targets, 88% of allo-HCT patients who received posoleucel remained free of clinically significant infections through week 14, the primary endpoint. Moreover, the non-relapse mortality rate in patients who received posoleucel was 0% through the 52-week follow-up visit. Additionally, in the positive Phase 2 proof-of-concept CHARMS treatment study, which enrolled allo-HCT recipients infected by one or more of the six viruses posoleucel targets, more than 90% of patients who failed conventional treatment and received posoleucel demonstrated a complete or partial clinical response based on predefined criteria.

About AlloVir

AlloVir is a leading late-clinical stage cell therapy company focused on restoring natural immunity against life-threatening viral diseases in pediatric and adult patients with weakened immune systems. The company's innovative and proprietary technology platform leverages off-the-shelf, allogeneic, single- and multi-virus-specific T cells for patients with T cell deficiencies who are at risk from the life-threatening consequences of viral diseases. AlloVir's technology and manufacturing process enable the potential for the treatment and prevention of a spectrum of devastating viruses with each single allogeneic cell therapy. The company is advancing multiple mid- and late-stage clinical trials across its product portfolio. For more information, visit www.allovir.com or follow us on X or LinkedIn.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as amended, including, without limitation, statements regarding the potential of posoleucel as a treatment for three distinct indications in allo-HCT patients, the potential of posoleucel to prevent infection or disease, the potential of posoleucel to treat vHC or AdV, the timing of data readouts for our three Phase 3 studies and regulatory milestones, the projection that our cash will fund operations through data readouts for our three Phase 3 pivotal trials, that the next 12 months will be catalyst rich with clinical and regulatory milestones, that preventing viral infections in allo-HCT patients could be transformational, our anticipated commercial launch in 2025, AlloVir's development and regulatory status of its product candidates, the planned conduct of its preclinical studies, and clinical trials and its prospects for success in those studies and trials, and its strategy, business plans and focus. The words "may," "will," "could," "would," "should," "expect," "plan," "anticipate," "intend," "believe," "estimate," "predict," "project," "potential," "continue," "target" and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Any forward-looking statements in this press release are based on management's current expectations and beliefs and are subject to a number of risks, uncertainties, and important factors that may cause actual events or results to differ materially from those expressed or implied by any forward-looking statements contained in this press release, including, without limitation, those related to the safety and efficacy of posoleucel, AlloVir's financial results, the timing for the initiation and successful completion of AlloVir's clinical trials of its product candidates, whether and when, if at all, AlloVir's product candidates will receive approval from the U.S. Food and Drug Administration (FDA), or other foreign regulatory authorities, competition from other biopharmaceutical companies, supply chain, and business operations and other risks identified in AlloVir's SEC filings, including AlloVir's form 10-Q for the period ended June 30, 2023. AlloVir cautions you not to place undue reliance on any forward-looking statements, which speak only as of the date they are made. AlloVir disclaims any obligation to publicly update or revise any such statements to reflect any change in expectations or in events, conditions, or circumstances on which any such statements may be based, or that may affect the likelihood that actual results will differ from those set forth in the forward-looking statements. Any forward-looking statements contained in this press release represent AlloVir's views only as of the date hereof and should not be relied upon as representing its views as of any subsequent date.

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