On May 9, 2022 Precision BioSciences, Inc. (Nasdaq: DTIL), a clinical stage gene editing company developing ARCUS-based ex vivo allogeneic CAR T and in vivo gene editing therapies, reported financial results for the first quarter ended March 31, 2022 and provided a business update (Press release, Precision Biosciences, MAY 9, 2022, View Source [SID1234613937]).
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"We continue to focus on execution and build on the utility of ARCUS as a premier genome editing platform to develop novel treatments for cancer and genetic diseases. We believe the differentiated attributes of ARCUS enable a high degree of specificity, minimal levels of off-target editing and maximum versatility, including gene insertion. These qualities underpin our organic strategy and attract accomplished partners that extend our reach to more patients with serious diseases while also providing capital to advance our core development priorities," said Michael Amoroso, Chief Executive Officer at Precision BioSciences. "As our programs continue to mature, we will remain nimble and follow the data to prudently manage our portfolio. This will allow us to hone in on the most impactful approaches to develop potential allogeneic CAR T product candidates and pursue optimal strategies for delivery to various tissues for gene editing in vivo."
"As we look ahead, we plan to provide an update across our allogeneic CAR T programs in June 2022 as data matures. On the research front, we have initiated IND-enabling studies for PBGENE-PH1 delivered by LNP as we target advancing three wholly owned in vivo gene editing programs towards IND or CTA applications over the next three years," Mr. Amoroso continued.
Recent Developments and Upcoming Milestones:
Ex Vivo Allogeneic CAR T Portfolio:
PBCAR0191: PBCAR0191 is the Company’s lead investigational anti-CD19 allogeneic CAR T candidate being evaluated in a Phase 1/2a clinical trial of adult subjects with relapsed or refractory (R/R) non-Hodgkin lymphoma (NHL). In December 2021, Precision announced a Phase 1 data update, in which a 100% overall response rate (6/6) and a 66% complete response rate (4/6) was observed among patients that previously received an autologous CAR T therapy and progressed. Precision prioritized enrollment of this high unmet need patient population as a potential path for PBCAR0191, and the Company plans to provide a program update on PBCAR0191 in June 2022.
PBCAR19B: PBCAR19B is a novel, immune-evading stealth cell candidate employing a single-gene edit to knock-down beta-2 microglobulin and insert an HLA-E transgene. We believe PBCAR19B is the first CAR T cell candidate in the clinic designed to evade rejection by host T cells and natural killer (NK) cells. Precision initiated a clinical trial of PBCAR19B in patients with NHL in mid-2021 and plans to commence dosing in the third quarter of 2022 at the next dose level with clinical trial material from an optimized manufacturing process. The Company plans to provide a program update on PBCAR19B in June 2022.
PBCAR269A: PBCAR269A is an investigational allogeneic CAR T cell candidate targeting B-cell maturation antigen (BCMA) for R/R multiple myeloma. Precision is evaluating PBCAR269A in a Phase 1/2a study in combination with nirogacestat, a gamma secretase inhibitor developed by SpringWorks Therapeutics. The first patient was dosed in the combination arm in June 2021, and Precision expects to provide a program update on PBCAR269A in June 2022.
In Vivo Gene Editing Portfolio:
Over the next three years, Precision expects that three of its wholly owned preclinical in vivo programs will advance to IND or CTA. This includes:
PBGENE-PCSK9: In 2021, Precision initiated a collaboration with iECURE, pursuant to which Precision’s PBGENE-PCSK9 candidate is expected to advance through preclinical activities as well as a Phase 1 study in familial hypercholesterolemia. A CTA filing is expected as early as the end of 2022.
PBGENE-PH1: Precision has initiated IND-enabling activities for its PBGENE-PH1 candidate designed to knock out the well-validated HAO1 gene as a potential one-time treatment for primary hyperoxaluria type 1 (PH1). In the first quarter of 2022, the Company initiated a non-human primate study for PBGENE-PH1 delivered by LNP and expects to submit an IND or CTA in 2023.
PBGENE-HBV: Precision’s gene editing program for chronic Hepatitis B applies ARCUS to knock out persistent covalently closed circular DNA (cccDNA) and inactivate integrated hepatitis B genomes, potentially achieving durable HBV S-antigen (HBsAg) loss and viral persistence. Precision plans to pursue clinical development of its PBGENE-HBV candidate using LNP delivery and expects to submit an IND/CTA in 2024.
Precision continues its in vivo gene editing collaboration with Lilly and is applying ARCUS nucleases for three initial targets, including Duchenne muscular dystrophy in muscle, a central nervous system directed target and a liver directed target. In addition, Precision continues to engage discussions with potential biotech collaborators to leverage the unique attributes of ARCUS, such as gene insertion, for a variety of disease targets.
As announced on May 2, 2022, preclinical data on Precision’s wholly owned PH1 and HBV programs will be presented at the upcoming American Society of Gene and Cell Therapy (ASGCT) (Free ASGCT Whitepaper) meeting, May 16-19, 2022.
Abstract #239, Optimization of Hydroxyacid Oxidase 1 (HAO1) Targeting ARCUS Nucleases for the Treatment of Primary Hyperoxaluria Type 1
Abstract #447, Targeting the Hepatitis B cccDNA with a Sequence-Specific ARCUS Nuclease to Eliminate Hepatitis B Virus In Vivo
Other Research:
Additional abstracts on ARCUS in vivo gene editing have been accepted for presentation at the upcoming ASGCT (Free ASGCT Whitepaper) meeting, including one abstract on Precision’s mitochondrial DNA preclinical research and one abstract from a research and license collaboration with iECURE and the company’s ornithine transcarbamylase (OTC) deficiency program.
Abstract #561, ARCUS Gene Editing to Eliminate MELAS-associated m.3243A>G Mutant Mitochondrial DNA
Abstract #811, AAV-meganuclease-mediated Gene Targeting Achieves Efficient and Sustained Transduction in Newborn and Infant Macaque Liver
Preclinical research led by the Department of Ophthalmology and Visual Sciences at the University of Louisville using ARCUS genome editing platform for autosomal dominant Retinitis Pigmentosa (adRP) was presented at the recent Association for Research in Vision and Ophthalmology (ARVO) Annual Meeting.
Abstract #3710318, Successful Late-stage Disease Treatment of P23H Human RHO (hRHO) Using ARCUS Nuclease Gene Editing in a Pig Model of Autosomal Dominant Retinitis Pigmentosa (adRP)
Abstract #3712152, Characterization of a Humanized Mouse Model of P23H Rhodopsin Autosomal Dominant Retinitis Pigmentosa (adRP)
Corporate:
Intellectual Property (IP) Update: In March 2022, the U.S. Patent and Trademark Office issued Precision five new U.S. patents further adding to the Company’s IP portfolio that cover the ARCUS platform and its use developing novel ex vivo and in vivo gene editing therapies. The five new patents included: patents relating to methods of using ARCUS nucleases to target sequences in the Hepatitis B virus (U.S. Patent No. 11,274,285); methods for modifying the Factor VIII gene in hemophilia A (U.S. Patent No. 11,278,632); methods for novel co-stimulatory domain used for allogeneic CAR T expansion (U.S. Patent No. 11,286,291); and methods of making allogeneic CAR T cells and T cell receptor alpha chain (TRAC)-targeting ARCUS nucleases useful in such methods (U.S. Patent Nos. 11,268,065 and 11,266,693).
Quarter Ended March 31, 2022 Financial Results:
Cash and Cash Equivalents: As of March 31, 2022, Precision had approximately $116.2 million in cash and cash equivalents. The Company expects that existing cash and cash equivalents, expected operational receipts and available credit will be sufficient to fund its operating expenses and capital expenditure requirements into mid-2023.
Revenues: Total revenues for the quarter ended March 31, 2022 were $3.3 million, as compared to $16.3 million for the same period in 2021. The decrease of $13.0 million in revenue during the quarter ended March 31, 2022 was primarily the result of a $10.3 million decrease in revenue recognized under the Servier Agreement subsequent to full satisfaction of the performance obligation under the execution of the Program Purchase Agreement in April 2021, a $2.1 million decrease in revenue recognized under the Lilly Agreement, and a $0.6 million decrease in revenue recognized from an agriculture partnering collaboration.
Research and Development Expenses: Research and development expenses were $20.0 million for the quarter ended March 31, 2022, as compared to $25.6 million for the same period in 2021. The decrease of $5.6 million was primarily due to decreases of $2.7 million in external development costs, including clinical research organization and clinical manufacturing organization costs, associated with our PBCAR0191, PBCAR269A, PBCAR20A and PBCAR19B clinical trials, as well as decreases of $1.1 million in sublicensing royalty payable to Duke on the Lilly upfront payment that was received in 2021 and $1.4 million in employee-related costs due to reduced headcount driven by the separation of Elo in 2021.
General and Administrative Expenses: General and administrative expenses were $10.7 million for the quarter ended March 31, 2022, as compared to $9.5 million for the same period in 2021. The increase of $1.2 million was primarily due to costs required to meet our growing infrastructure needs, including an increase of $1.3 million in general and administrative employee-related costs associated with increased wages, share-based compensation, relocation and recruiting costs for key management personnel.
Net Loss: Net loss was $28.2 million, or $(0.46) per share (basic and diluted), for the quarter ended March 31, 2022, as compared to a net loss of $18.7 million, or $(0.33) per share (basic and diluted), for the same period in 2021.