Precigen Inc. (PGEN) Announces Positive Phase 1 Dose Escalation and Expansion Cohort Data for PRGN-2012

January 24, 2023 4:02 PM EST

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Precigen, Inc. (Nasdaq: PGEN), a biopharmaceutical company specializing in the development of innovative gene and cell therapies to improve the lives of patients, today announces positive Phase 1 dose escalation and expansion cohort data as of the January 12, 2023 cutoff for the investigational, potential first-in-class PRGN-2012 off-the-shelf (OTS) AdenoVerseā„¢ immunotherapy in patients with recurrent respiratory papillomatosis (RRP).

The company will host an R&D Day virtual event today at 4:30 PM ET to showcase the data and will feature presentations by Clint T. Allen, MD, Senior Investigator, Surgical Oncology Program, Center for Cancer Research, National Cancer Institute (NCI) and lead associate investigator for the PRGN-2012 clinical trial, and Precigen's President and CEO, Helen Sabzevari, PhD. Participants may register and access the live webcast through Precigen's investor relations website in the Events & Presentations section.

"As a patient and an advocate on behalf of the RRP community, the potential for a therapeutic alternative to surgical intervention would be nothing short of life changing," said Kim McClellan, President, Recurrent Respiratory Papillomatosis Foundation (RRPF). "There has never been a therapeutic option for the RRP patient community and we are incredibly hopeful that this will change in the near future. Our community faces ongoing risks from hospitalizations and repeat surgeries, coupled with daily quality-of-life challenges, such as obstructed breathing, difficulties swallowing, and impaired speech, and our community bears a tremendous financial burden from the significant lifetime costs to patients and their families affiliated with this disease."

"RRP is a rare disease with no cure. The current standard-of-care is repeated surgery to treat symptoms, which exposes patients to surgical risks, emotional distress and poses a significant economic burden to families and the healthcare system overall. We are thrilled to present these Phase 1 results today as PRGN-2012 has the potential to improve the lives of patients with severe, aggressive RRP through reduced surgeries," said Helen Sabzevari, PhD, President and CEO of Precigen. "Any treatment that reduces the burden of surgeries in RRP is considered meaningful and in the PRGN-2012 Phase 1 study, 50% of patients had a Complete Response, requiring no surgeries as of the data cutoff with a minimum of 12 months following treatment."

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