Precigen Announces Dosing of First Patients with UltraCAR-T® Cells Manufactured Using Proprietary UltraPorator™ System in Ongoing PRGN-3005 and PRGN-3006 Phase 1 Clinical Trials

On November 16, 2020 Precigen, Inc. (Nasdaq: PGEN), a biopharmaceutical company specializing in the development of innovative gene and cell therapies to improve the lives of patients, reported clinical implementation of its UltraPorator system, a device exclusive to Precigen for the scale-up of rapid and cost-effective decentralized manufacturing of UltraCAR-T therapies (Press release, Precigen, NOV 16, 2020, View Source [SID1234571153]). Precigen and its clinical partners have now successfully dosed the first patients with UltraCAR-T cells manufactured using the UltraPorator system. The patients were dosed with PRGN-3005 UltraCAR-T cells in the intraperitoneal (IP) arm of the ongoing Phase 1 study for advanced ovarian cancer patients conducted in collaboration with the University of Washington/Fred Hutchinson Cancer Research Center and with PRGN-3006 UltraCAR-T cells in the ongoing Phase 1/1b study for patients with relapsed or refractory acute myeloid leukemia (AML) and higher risk myelodysplastic syndrome (MDS) conducted in collaboration with the Moffitt Cancer Center. UltraCAR-T eliminates ex vivo expansion, which reduces manufacturing time to allow for rapid next day administration of UltraCAR-T cells following non-viral gene transfer.

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"Dosing the first patients with UltraCAR-T cells manufactured using our proprietary UltraPorator system in both of our UltraCAR-T trials represents a major advance in our ability to transform how personalized cancer therapies are manufactured and administered within a medical center’s own labs. This milestone positions UltraPorator as the essential go-to platform for cell therapy manufacturing," said Helen Sabzevari, PhD, President and CEO of Precigen. "Our long-term goal is to streamline the process of oncology drug manufacturing so that healthcare professionals can treat their patients as quickly as possible in a commercially viable and expedient way."

UltraPorator is a high-throughput, semi-closed electroporation system for reprogramming T-cells using Precigen’s next generation Sleeping Beauty non-viral gene transfer technology. UltraPorator reduces manufacturing risk and allows the medical center to generate UltraCAR-T cells within its own facilities. UltraPorator is capable of handling the electroporation of billions of T-cells in minutes, and further streamlines the UltraCAR-T overnight manufacturing process, allowing for rapid manufacturing of UltraCAR-T cells in higher doses and quantities, which is critical as the Company moves to expansion phases for its clinical studies.

"Current methods for non-viral gene transfer require labor intensive, manual handling of samples, which may increase contamination risk, requires multiple batches and involves extensive hours to manufacture a single dose," said Mary L. (Nora) Disis, MD, faculty member at the University of Washington and Fred Hutchinson Cancer Research Center and one of the lead investigators for the PRGN-3005 study. "The UltraPorator system is a critical piece of the puzzle for personalized manufacturing by significantly reducing processing times, further streamlining UltraCAR-T manufacturing and allowing us to deliver personalized treatment to patients faster than ever."

"Time is critical when selecting and administering treatment to relapsed or refractory AML patients," said David A. Sallman, MD, lead investigator for the PRGN-3006 study at the Moffitt Cancer Center. "The ability to conveniently manufacture PRGN-3006 UltraCAR-T cells using the UltraPorator device overnight and administer treatment the next day can be a game-changer for these patients."

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 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 unique therapies toward clinical proof-of-concept and commercialization. For more information about Precigen, visit www.precigen.com or follow us on LinkedIn.

About PRGN-3005 UltraCAR-T
PRGN-3005 UltraCAR-T is a multigenic autologous CAR-T cell treatment utilizing Precigen’s Sleeping Beauty system to simultaneously express a CAR specifically targeting the unshed portion of MUC16, which is highly expressed on ovarian tumors with limited normal tissue expression; membrane bound IL-15 for enhanced in vivo expansion and persistence; and a kill switch to conditionally eliminate CAR-T cells for an improved safety profile. PRGN-3005 is being evaluated in collaboration with the University of Washington and Fred Hutchinson Cancer Research Center in an investigator-initiated open-label, dose escalation Phase 1 study to evaluate the safety and maximal tolerated dose of PRGN-3005 delivered by intraperitoneal infusion (IP) or intravenous infusion (IV) (clinical trial identifier: NCT03907527). The study population includes patients with advanced stage (III/IV) recurrent ovarian, fallopian tube, and primary peritoneal cancer who are platinum-resistant and have progressed after receiving standard-of-care therapies or are not eligible to receive available therapies with known clinical benefit.

About PRGN-3006 UltraCAR-T
PRGN-3006 UltraCAR-T is a multigenic autologous CAR-T cell treatment utilizing Precigen’s Sleeping Beauty system to simultaneously express a CAR specifically targeting CD33, which is over expressed on acute myeloid leukemia blasts with lesser expression on normal hematopoietic stem cell populations and minimal non-hematopoietic expression; membrane bound IL-15 for enhanced in vivo expansion and persistence; and a kill switch to conditionally eliminate CAR-T cells for improved safety profile. PRGN-3006 is being evaluated in collaboration with the Moffitt Cancer Center in a nonrandomized, investigator–initiated Phase 1/1b dose escalation study to evaluate the safety and maximal tolerated dose of PRGN–3006 UltraCAR-T (clinical trial identifier: NCT03927261). The study population includes patients with relapsed or refractory acute myeloid leukemia or higher risk myelodysplastic syndrome.

Trademarks
Precigen, UltraPorator, UltraCAR-T and Advancing Medicine with Precision are trademarks of Precigen and/or its affiliates. Other names may be trademarks of their respective owners

CRISPR Therapeutics to Participate in the Jefferies Virtual London Healthcare Conference

On November 16, 2020 CRISPR Therapeutics (Nasdaq: CRSP), a biopharmaceutical company focused on creating transformative gene-based medicines for serious diseases, reported that members of its senior management team are scheduled to participate virtually in the Jefferies London Healthcare Conference on Thursday, November 19, 2020, at 12:00 p.m. ET (Press release, CRISPR Therapeutics, NOV 16, 2020, View Source [SID1234571151]).

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A live webcast of the event will be available on the "Events & Presentations" page in the Investors section of the Company’s website at View Source A replay of the webcast will be archived on the Company’s website for 14 days following the presentation.

Merus to Present at the Jefferies Virtual London Healthcare Conference

On November 16, 2020 Merus N.V. (Nasdaq:MRUS), a clinical-stage oncology company developing innovative, full-length multispecific antibodies (Biclonics and Triclonics), reported that Bill Lundberg, M.D., President and Chief Executive Officer, will participate in a fireside chat at the Jefferies Virtual London Healthcare Conference on Tuesday, November 17, 2020 at 14:40 p.m. GMT/9:40 a.m. ET (Press release, Merus, NOV 16, 2020, View Source [SID1234571150]).

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A live webcast of the presentation will be available on the Investors page of the Company’s website, View Source An archived presentation will be available on the Merus website for a limited time.

HARPOON THERAPEUTICS TO PARTICIPATE IN THE 32ND ANNUAL PIPER SANDLER HEALTHCARE CONFERENCE

On November 16, 2020 Harpoon Therapeutics, Inc. (NASDAQ: HARP), a clinical-stage immunotherapy company developing a novel class of T cell engagers, reported that Gerald McMahon, Ph.D., President and Chief Executive Officer, will participate in a fireside chat at the virtual Piper Sandler Healthcare Conference, being held December 1-3, 2020 (Press release, Harpoon Therapeutics, NOV 16, 2020, View Source [SID1234571149]). The company will conduct institutional investor meetings on December 2, 2020.

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The pre-recorded fireside chat will be accessible beginning November 23, 2020 in the Investors section of Harpoon Therapeutics’ website at www.harpoontx.com. The recording will be available on the website through December 3, 2020.

Altimmune To Present At Upcoming Virtual Investor Conferences

On November 16, 2020 Altimmune, Inc. (Nasdaq: ALT), a clinical-stage biopharmaceutical company advancing proprietary intranasal vaccines and peptide therapeutics for liver disease, reported that management will present at the following upcoming virtual investor conferences (Press release, Altimmune, NOV 16, 2020, View Source [SID1234571147]):

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Jefferies London Virtual Healthcare Conference
Tuesday, November 17, 2020
11:25 am Eastern Time

Piper Sandler 32nd Annual Virtual Healthcare Conference
Monday, November 23, 2020 to Thursday, December 3, 2020
Fireside chat recording available to conference participants

3rd Annual Evercore ISI Virtual HealthCONx Conference
Wednesday, December 2, 2020
8:00 am Eastern Time

The sessions will be webcast and can be accessed by visiting the investor relations section of the company’s website at www.altimmune.com under Events / Presentations.