PRECISION BIOSCIENCES INC

Partnered Programs.

iECURE-OTC (Gene Insertion Program): Led by iECURE, ECUR-506 is the first ARCUS-mediated gene editing program to advance into the clinic following approval from the Australian Therapeutic Goods Administration and the U.K. Medicines & Healthcare products Regulatory Agency (MHRA) for initiation of the OTC-HOPE study, in the first half of 2024. The OTC-HOPE study is a first-in-human Phase 1/2 trial evaluating ECUR-506 as a potential treatment for neonatal onset ornithine transcarbamylase (OTC) deficiency. Non-human primate (NHP) data presented by researchers from the University of Pennsylvania’s Gene Therapy Program demonstrated sustained gene insertion of a therapeutic OTC transgene one-year post-dosing in newborn and infant NHP’s with high efficiency.

PBGENE-NVS (Gene Insertion Program): Precision continues to advance its gene editing program with Novartis to develop a custom ARCUS nuclease for patients with hemoglobinopathies, such as sickle cell disease and beta thalassemia. The collaborative intent is to insert, in vivo, a therapeutic transgene as a potential one-time transformative treatment administered directly to the patient to overcome disparities in patient access to treatment with other therapeutic technologies, including those that are targeting anex vivo gene editing approach.

PBGENE-DMD (Gene Excision Program): Precision continues itsin vivo gene editing collaboration with Prevail Therapeutics, a wholly owned subsidiary of Eli Lilly and Company (Lilly), in applying ARCUS nucleases to three initial targets, including Duchenne muscular dystrophy (DMD) in muscle, a central nervous system directed target, and a liver directed target. The goal of the PBGENE-DMD program is to utilize a pair of ARCUS nucleases, delivered by a single adeno-associated virus (AAV), that are designed to excise an approximately 500,000 base pair mutation “hot spot” region from the dystrophin gene to generate a variant of the dystrophin protein that is functionally competent. During the Company’s September 2023 R&D Day, Precision highlighted preclinical data demonstrating the potential of ARCUSin vivo gene editing for large gene excisions and that the edited dystrophin variant was observed in multiple tissue types frequently involved in progression of DMD, including skeletal muscle, heart, and diaphragm, enabling significantly improved muscle function.

PBGENE-LLY2 (Gene Insertion Program): During the Precision 2023 Gene Editing R&D Day, Precision highlighted new data demonstrating that ARCUS is capable of high efficiency gene insertion in nondividing cells in adult nonhuman primates, the most challenging context for gene insertion. In the pre-clinical study involving coadministration of AAV and lipid nanoparticle, Precision scientists observed 40% to 45% overall gene insertion efficiency at 1- and 3-months. Precision scientists largely attribute this high efficiency to the unique ARCUS cut type which drives homology directed repair, even in nondividing cells.