Recurrent Respiratory Papillomatosis

American Association for Cancer Research (AACR) Special Conference: Tumor Immunology and Immunotherapy: New immunology data showed ability of INO-3107 to induce an antigen-specific T cell response against HPV-6 and HPV-11 and drive recruitment of T cells into airway tissues and papilloma International Society of Vaccines Conference: Full safety and efficacy data from Phase 1/2 clinical study in patients with Recurrent Respiratory Papillomatosis (RRP) indicated that INO-3107 was well tolerated and immunogenic; 81% of patients in the trial required fewer surgeries post-treatment when compared to baseline PLYMOUTH MEETING, Pa., Oct. 21, 2024 /PRNewswire/ -- INOVIO (NASDAQ:INO), a biotechnology company focused on developing and commercializing DNA medicines to help treat and protect people from HPV-related diseases, cancer, and infectious diseases, today announced the presentation of new data at scientific conferences for its lead candidate, INO-3107, for which the company is preparing a Biologics License Application for targeted submission in mid-2025 under the U.S. Food and Drug Administration's Accelerated Approval Pathway Program. At AACR's Tumor and Immunology Conference on October 19, INOVIO presented new immunology data demonstrating the ability of INO-3107 to induce antigen-specific T cell responses against HPV-6 and HPV-11 and drive recruitment of those T cells into airway tissues and papilloma of RRP patients, which could ultimately slow or eliminate papilloma regrowth. Additionally, INOVIO will tomorrow present its full safety and efficacy data set for the Phase 1/2 trial for INO-3107 at the International Society of Vaccines Conference. In the trial, INO-3107 was found to be well tolerated and immunogenic. Of the 32 patients in the trial, 26 patients, or 81%, experienced a decrease in the number of surgical interventions in the year after treatment when compared to the year before treatment. "The new immunology data support the proposed mechanism of action of INO-3107 which is to generate an immune response that can seek out and eliminate HPV-6 and HPV-11 infected cells that are the underlying cause of papilloma growth," said Dr. Matthew Morrow, INOVIO's Vice President of Translational Science. "Our analysis shows that INO-3107 induced significant clonal T cell expansion in the blood, including antigen-specific killer T cells. Investigators also observed T cell infiltration into airway tissue, which is positively associated with clinical response." "The collective story these data sets provide is compelling. Over 81% of patients who received INO-3107 required fewer surgical procedures compared to baseline, a result that is further supported by the new immunology data demonstrating the ability of INO-3107 to stimulate the immune system and generate antigen-specific T cells that travel to the airways and could eliminate the underlying disease," said Dr. Jacqueline Shea, INOVIO's President and Chief Executive Officer. "We believe these data continue to demonstrate that INO-3107 has the potential to significantly improve the lives of patients living with RRP and become the preferred choice for the broadest number of RRP patients and healthcare providers." Summary of Data Presented at Conferences AACR Special Conference in Cancer Research: Tumor Immunology and Immunotherapy Abstract: Reduction in Surgical Interventions for the Treatment of Recurrent Respiratory Papillomatosis by INO-3107 is Associated with Enriched Macrophage, Dendritic cell and T cell Signatures in Patient Airways New Immunology data for INO-3107 demonstrated: Induction of T cell responses specifically for HPV-6 and HPV-11 Expansion of antigen specific, clonal T cell populations in peripheral blood Induction of inflammatory responses in papilloma and airway tissue, including: Interferon, cytokine and chemokine signaling Adaptive and innate immune cell infiltration, with emphasis on T cells Cytotoxic signatures of infiltrated T cells in papilloma/airway tissue, providing direct evidence of increased overall T cell infiltration compared to pre-treatment Clinical activity not impacted by immunosuppressive papilloma microenvironment International Society of Vaccines Conference Abstract: Clinical Assessment of Adjuvant Immunotherapy, INO-3107, in Adult Patients with Recurrent respiratory papillomatosis (RRP) Clinical Results of Phase 1/2 Study with INO-3107 in Adult RRP Patients In the trial, the overall clinical response (OCR) was 81%, with 26 of the 32 enrolled patients experiencing a decrease in the number of surgical interventions in the year after INO-3107 administration compared to the prior year, including 28% (9/32) that required no surgical intervention (i.e., complete response or "CR") during or after the dosing window. Further, 44% (14/32) of patients had a partial response ("PR"), measured by a reduction of at least 50%, but less than 100%, in the number of surgeries when compared to the prior year. The overall response rate (ORR) of patients (CR+PR) was therefore 72% (23/32). Other key data points presented include: INO-3107 was well tolerated and immunogenic in the 32 patients enrolled 41% (13/32) of patients reported a treatment-related Adverse Event (AE) Most frequent treatment-related AE's reported were injection site pain (31%) and fatigue (9%) No treatment-related AEs greater than Grade 2 severity were reported Modified Derkay-Pransky severity scores improved from baseline to the end of 52-week trial INO-3107 induced durable cellular responses and generated T cells against HPV-6 and HPV-11 The abstracts from the poster and presentations are available on the INOVIO events page: [tbd link] About RRP RRP is a debilitating and rare disease caused primarily by HPV-6 and/or HPV-11. RRP is characterized by the development of small, wart-like growths, or papillomas, in the respiratory tract. While papillomas are generally benign, they can cause severe, life-threatening airway obstruction and respiratory complications. RRP can also significantly affect quality of life for patients by affecting the voice box, limiting the ability to speak effectively. Surgery to remove papillomas is the standard of care for RRP; however, the papillomas often grow back. INOVIO's market research to date with patients and healthcare professionals indicates that a reduction of even one surgery matters, because every surgery poses a significant risk of causing permanent damage to the vocal cords. The most widely cited U.S. epidemiology data published in 1995 estimated that there were 14,000 active cases and about 1.8 per 100,000 new cases in adults each year. About INO-3107 INO-3107 is a DNA immunotherapy designed to elicit an antigen-specific T cell response against both HPV-6 and HPV-11 proteins. These targeted T cells are designed to seek out and kill HPV-6 and HPV-11 infected cells, with the aim of potentially preventing or slowing the growth of new papillomas. In a Phase 1/2 clinical trial conducted with INO-3107, 81.3% (26/32) of patients had a decrease in surgical interventions in the year after INO-3107 administration compared to the prior year, including 28.1% (9/32) that required no surgical intervention during or after the dosing window. Patients in the trial had a median range of 4 surgeries (2-8) in the year prior to dosing. After dosing, there was a median decrease of 3 surgical interventions (95% confidence interval -3, -2). At the outset of the trial (Day 0), patients had a clinically warranted procedure to have RRP tissue surgically removed, but any surgery performed after Day 0 during the dosing window was counted against the efficacy endpoint. Treatment with INO-3107 generated a strong immune response in the trial, inducing activated CD4 T cells and activated CD8 T cells with lytic potential. T-cell responses were also observed at Week 52, indicating a persistent cellular memory response. INO-3107 was well tolerated by participants in the trial, resulting in mostly low-grade (Grade 1) treatment-emergent adverse effects such as injection site pain and fatigue. Like other DNA medicines, INO-3107 has demonstrated the ability to generate antigen-specific T cells that is not affected by anti-vector immunity impacting immunogenicity, either before administration or after the first dose unlike other T-cell generating platforms such as viral vectors. This feature of DNA medicines is expected to allow INO-3107 to maintain T cell response and overall efficacy, which would make it an important therapeutic option for a majority of RRP patients. The FDA granted INO-3107 Orphan Drug designation and Breakthrough Therapy designation, and advised INOVIO that it could submit its BLA under the accelerated approval program using data from its already completed Phase 1/2 trial. The European Commission granted INO-3107 Orphan Drug designation and assigned INOVIO's delivery device CELLECTRA® a CE marking, a regulatory standard that certifies that a product has met European Union's safety, health, and environmental standards. The United Kingdom awarded INO-3107 the Innovation Passport. This designation serves as the entry point to the Innovative Licensing and Access Pathway (ILAP), which aims to accelerate time to market and facilitate patient access to medicines. About INOVIO's DNA Medicines Platform INOVIO's DNA medicines platform has two innovative components: precisely designed DNA plasmids, delivered by INOVIO's proprietary investigational medical device, CELLECTRA®. INOVIO uses proprietary technology to design its DNA plasmids, which are small circular DNA molecules that work like software the body's cells can download to produce specific proteins to target and fight disease. INOVIO's proprietary CELLECTRA® delivery devices are designed to optimally deliver its DNA medicines to the body's cells without requiring chemical adjuvants or lipid nanoparticles and without the risk of the anti-vector response historically seen with viral vector platforms. About INOVIO INOVIO is a biotechnology company focused on developing and commercializing DNA medicines to help treat and protect people from HPV-related diseases, cancer, and infectious diseases. INOVIO's technology optimizes the design and delivery of innovative DNA medicines that teach the body to manufacture its own disease-fighting tools. For more information, visit . Contacts Media: Jennie Willson (267) 429-8567 [email protected] Investors: Thomas Hong (267) 440-4298 [email protected] SOURCE INOVIO Pharmaceuticals, Inc. WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

PLYMOUTH MEETING, Pa., Oct. 1, 2024 /PRNewswire/ -- INOVIO (NASDAQ:INO), a biotechnology company focused on developing and commercializing DNA medicines to help treat and protect people from HPV-related diseases, cancer, and infectious diseases, today announced that it will present at the following scientific conferences: AACR Special Conference in Cancer Research: Tumor Immunology and Immunotherapy Poster by Dr. Matthew Morrow, VP of Translational Sciences at INOVIO Abstract Title: Reduction in Surgical Interventions for the Treatment of Recurrent Respiratory Papillomatosis by INO-3107 is Associated with Enriched Macrophage, Dendritic cell and T cell Signatures in Patient Airways Date and Time: October 19, 2024, 6:00 - 8:15pm ET Location: Boston, MA ISV Congress 2024 Oral presentation and poster by Dr. Michael Sumner, Chief Medical Officer at INOVIO Abstract Title: Clinical Assessment of Adjuvant Immunotherapy, INO-3107, in Adult Patients with Recurrent Respiratory Papillomatosis (RRP) Date and Time: October 22, 2024, 4:20pm KST Location: Seoul, Korea Fall Voice Poster by Dr. Jeffrey Skolnik, SVP of Clinical Development at INOVIO Abstract Title: Clinical Assessment of Adjuvant Immunotherapy, INO-3107, in Adult Patients with Recurrent Respiratory Papillomatosis (RRP) Date and Time: October 25 – October 26, 2024 Location: Phoenix, AZ World Vaccine Congress Europe Presentation and panel discussion by Dr. Dave Liebowitz, SVP Early-Stage Clinical Development at INOVIO Track: Pre-Congress Workshop on Platform Technologies Date and Time: October 28, 2024, 10:00am CET Location: Barcelona, Spain Abstracts from these conferences will be made available on INOVIO's website following each presentation. About INOVIO INOVIO is a biotechnology company focused on developing and commercializing DNA medicines to help treat and protect people from HPV-related diseases, cancer, and infectious diseases. INOVIO's technology optimizes the design and delivery of innovative DNA medicines that teach the body to manufacture its own disease-fighting tools. For more information, visit . Contacts Media: Jennie Willson (267) 429-8567 [email protected] Investors: Thomas Hong (267) 440-4298 [email protected] SOURCE INOVIO Pharmaceuticals, Inc. WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

– In June 2024, the Company announced groundbreaking pivotal study data for PRGN-2012 gene therapy at the 2024 ASCO annual meeting in which more than half of RRP patients achieved Complete Response – – In July 2024, the Company appointed Phil Tennant as Chief Commercial Officer to spearhead potential PRGN-2012 commercial launch – – In August 2024, the Company announced a strategic reprioritization of its pipeline to focus on advancement of its lead program, PRGN-2012 in RRP – – PRGN-2012 rolling BLA submission, under an accelerated approval pathway, is anticipated in the second half of 2024; the Company has initiated enrollment in the confirmatory clinical trial of PRGN-2012 – – In August 2024, the Company strengthened its cash position by raising approximately $31.4 million via a public offering of common stock – GERMANTOWN, Md., Aug. 14, 2024 /PRNewswire/ -- Precigen, Inc. (Nasdaq: PGEN), a biopharmaceutical company specializing in the development of innovative gene and cell therapies to improve the lives of patients, today announced second quarter and first half 2024 financial results and business updates. "We are all in on PRGN-2012 given the immense unmet need for RRP patients and our groundbreaking pivotal data supporting the potential of what we hope to be the first-ever FDA approved therapy to treat RRP," said Helen Sabzevari, PhD, President and CEO of Precigen. "By strategically focusing our portfolio, streamlining resources and recent public offering, we have optimized the company to rapidly prepare for submission of a rolling biologics license application under an accelerated approval pathway. We are excited to have initiated enrollment in the confirmatory clinical trial and will continue to accelerate our commercial readiness campaign for a potential launch in 2025 under the leadership of our newly hired Chief Commercial Officer. Additionally, we plan to maximize portfolio value by focusing on strategic partnerships to further advance our highly promising UltraCAR-T programs." "Our recent reprioritization and public offering is expected to fund our operations into early 2025 allowing us to focus on advancement of PRGN-2012 while continuing to explore potential non-dilutive financing opportunities for future liquidity," said Harry Thomasian Jr., CFO of Precigen. Key Program Highlights PRGN-2012 AdenoVerse® Gene Therapy in RRP: PRGN-2012 is an investigational off-the-shelf AdenoVerse gene therapy designed to elicit immune responses directed against cells infected with human papillomavirus (HPV) 6 or HPV 11 for the treatment of recurrent respiratory papillomatosis (RRP). PRGN-2012 received Breakthrough Therapy Designation from the US Food and Drug Administration (FDA). PRGN-2012 also received Orphan Drug Designation from the FDA and Orphan Drug Designation from the European Commission. Results from the pivotal clinical study of PRGN-2012 for the treatment of RRP were presented at the 2024 American Society of Clinical Oncology (ASCO) annual meeting in a late-breaking oral presentation titled, "PRGN-2012, a novel gorilla adenovirus-based immunotherapy, provides the first treatment that leads to complete and durable responses in recurrent respiratory papillomatosis patients." Pivotal study met primary safety and efficacy endpoints. 51% (18 out of 35) of patients achieved Complete Response, requiring no surgeries after treatment with PRGN-2012; Complete Responses have been durable beyond 12 months with median duration of follow up of 20 months as of the May 20, 2024 data cutoff. 86% of patients (30 out of 35) had a decrease in surgical interventions in the year after PRGN-2012 treatment compared to the year prior to treatment; RRP surgeries reduced from a median of 4 (range: 3-10) pre-treatment to 0 (range: 0-7) post-treatment. PRGN-2012 was well-tolerated with no dose-limiting toxicities and no treatment-related adverse events greater than Grade 2. PRGN-2012 treatment induced HPV 6/11-specific T cell responses in RRP patients with a significantly greater expansion of peripheral HPV-specific T cells in responders compared with non-responders. PRGN-2012 significantly (p < 0.0001) improved Derkay and quality of life scores in complete responders. A rolling Biologics License Application (BLA) submission under an accelerated approval pathway is anticipated in the second half of 2024. The Company has initiated enrollment in the confirmatory clinical trial, in accordance with the guidance from the FDA, prior to submission of the BLA. The Company and the Recurrent Respiratory Papillomatosis Foundation held the inaugural RRP Awareness Day on June 11, 2024. The multi-stakeholder event raised awareness by bringing together individuals living with RRP, caregivers, clinicians, and government officials. Strategic Prioritization: In August 2024, the Company announced a strategic prioritization of its clinical portfolio and associated streamlining of resources, including a reduction of over 20% of its workforce, to focus on potential commercialization of PRGN-2012. PRGN-2009 AdenoVerse® Gene Therapy Clinical Trials The Company plans to continue PRGN-2009 Phase 2 clinical trials under a cooperative research and development agreement (CRADA) with the National Cancer Institute (NCI) in recurrent/metastatic cervical cancer and in newly diagnosed HPV-associated oropharyngeal cancer. PRGN-2009 cervical cancer clinical trial enrollment at non-NCI clinical sites will be paused. UltraCAR-T® Clinical Programs The Company has completed enrollment of the Phase 1b trial for PRGN-3006 in acute myeloid leukemia (AML), which received Fast Track designation from the FDA, and is preparing for an end of Phase 1b meeting with the FDA to discuss next steps. The Company will pause the PRGN-3005 and PRGN-3007 clinical trials. The Company will minimize UltraCAR-T spend and focus on strategic partnerships to further advance UltraCAR-T programs. Preclinical Programs The Company will pause all preclinical programs. ActoBio The Company has initiated shutdown of its Belgium-based ActoBio subsidiary operations, including planned elimination of all ActoBio personnel. In conjunction with this shutdown, ActoBio's portfolio of intellectual property will be made available for prospective transactions. Financial Highlights Strategic prioritization resulted in non-cash impairment charges of $32.9 million, net of tax, in the second quarter and severance charges of $3.0 million, of which $2.1 million was recorded in the second quarter and $0.9 million is expected to be recorded in the third quarter. The Company closed a public offering of its common stock in August 2024, resulting in net proceeds of approximately $31.4 million. Second Quarter 2024 Financial Results Compared to Prior Year Period Research and development expenses increased $3.8 million, or 32%, compared to the three months ended June 30, 2023. Salaries, benefits, and other personnel costs increased $2.1 million primarily due to severance charges related to the shutdown of the Company's ActoBio subsidiary. Additionally, fees paid to contract research organizations related to the start of the PRGN-2012 confirmatory clinical trial and close out of the PRGN-2012 pivotal clinical trial activities and professional fees incurred related to our manufacturing facility readiness for anticipated BLA submission increased compared to the same period in 2023. SG&A expenses increased by $1.0 million, or 11%, compared to the three months ended June 30, 2023. This increase was primarily driven by severance costs incurred related to the suspension of ActoBio operations of $0.4 million, increased costs associated with PRGN-2012 commercial readiness as well as increased professional fees incurred related to general corporate matters compared to the same period in 2023. In conjunction with the suspension of ActoBio's operations, the Company recorded $34.5 million of impairment charges related to goodwill and other noncurrent assets in the second quarter of 2024, as well as a related tax benefit of $1.7 million. Total revenues decreased $1.1 million, or 59%, compared to the three months ended June 30, 2023. This decrease was related to reductions in product and service revenues at Exemplar. Net loss was $58.8 million, or $(0.23) per basic and diluted share, compared to net loss of $20.3 million, or $(0.08) per basic and diluted share, in period ended June 30, 2023. First Half 2024 Financial Results Compared to Prior Year Period Research and development expenses increased $5.9 million, or 25%, compared to the six months ended June 30, 2023. Salaries, benefits, and other personnel costs increased by $3.3 million primarily due to $2.1 million of severance charges related to the shutdown of the Company's ActoBio subsidiary and an increase in the hiring of employees related to the advancement of PRGN-2012 in 2023 at Precigen. Additionally, fees paid to contract research organizations related to the start of the PRGN-2012 confirmatory clinical trial and close out of the PRGN-2012 pivotal clinical trial activities and professional fees incurred related to our manufacturing facility readiness for anticipated BLA submission increased compared to the prior year period. These increases were offset by lower costs incurred at contract research organizations for other programs compared to the same period in 2023. SG&A expenses decreased by $0.5 million, or 2%, compared to the six months ended June 30, 2023. This decrease was primarily due to lower stock compensation and insurance expenses in 2024 compared to the same period in 2023. These decreases were offset by severance costs incurred in the second quarter of 2024 related to the suspension of ActoBio's operations, and increased costs related to PRGN-2012 commercial readiness compared to the same period in 2023. In conjunction with the suspension of ActoBio's operations, the Company recorded $34.5 million of impairment charges related to goodwill and other noncurrent assets in the second quarter of 2024, as well as a related tax benefit of $1.7 million. Total revenues decreased $1.9 million, or 51%, compared to the six months ended June 30, 2023. This decrease was related to reductions in product and service revenues at Exemplar. Net loss was $82.5 million, or $(0.33) per basic and diluted share, compared to net loss of $43.1 million, or $(0.18) per basic and diluted share, in period ended June 30, 2023. Precigen: Advancing Medicine with Precision™ Precigen (Nasdaq: PGEN) is a dedicated discovery and clinical stage biopharmaceutical company advancing the next generation of gene and cell therapies using precision technology to target the most urgent and intractable diseases in our core therapeutic areas of immuno-oncology, autoimmune disorders, and infectious diseases. Our technologies enable us to find innovative solutions for affordable biotherapeutics in a controlled manner. Precigen operates as an innovation engine progressing a preclinical and clinical pipeline of well-differentiated therapies toward clinical proof-of-concept and commercialization. For more information about Precigen, visit or follow us on X @Precigen, LinkedIn or YouTube. Trademarks Precigen, UltraCAR-T, UltraPorator, AdenoVerse, UltraVector and Advancing Medicine with Precision are trademarks of Precigen and/or its affiliates. Other names may be trademarks of their respective owners. Cautionary Statement Regarding Forward-Looking Statements Some of the statements made in this press release are forward-looking statements. These forward-looking statements are based upon the Company's current expectations and projections about future events and generally relate to plans, objectives, and expectations for the development of the Company's business, including the timing and progress of preclinical studies, clinical trials, discovery programs and related milestones, the promise of the Company's portfolio of therapies, and in particular its CAR-T and AdenoVerse therapies. Although management believes that the plans and objectives reflected in or suggested by these forward-looking statements are reasonable, all forward-looking statements involve risks and uncertainties and actual future results may be materially different from the plans, objectives and expectations expressed in this press release. The Company has no obligation to provide any updates to these forward-looking statements even if its expectations change. All forward-looking statements are expressly qualified in their entirety by this cautionary statement. For further information on potential risks and uncertainties, and other important factors, any of which could cause the Company's actual results to differ from those contained in the forward-looking statements, see the section entitled "Risk Factors" in the Company's most recent Annual Report on Form 10-K and subsequent reports filed with the Securities and Exchange Commission. Investor Contact: Steven M. Harasym Vice President, Investor Relations Tel: +1 (301) 556-9850 [email protected] Media Contacts: Donelle M. Gregory [email protected] Glenn Silver Lazar-FINN Partners [email protected] SOURCE Precigen, Inc.