On November 12, 2020 Nkarta, Inc. (Nasdaq: NKTX), a clinical-stage biopharmaceutical company developing engineered natural killer (NK) cell therapies to treat cancer, reported financial results for the third quarter ended September 30, 2020, and highlighted recent corporate accomplishments (Press release, Nkarta, NOV 12, 2020, View Source [SID1234570791]).
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"We’re excited by the continued progress made at Nkarta this quarter and the ability of our teams to advance Nkarta’s allogeneic, off-the-shelf cell therapy programs," said Paul J. Hastings, President and Chief Executive Officer of Nkarta. "We have dosed the first patient in our first clinical trial of NKX101, continue to prepare our in-house clinical GMP capabilities for the production of NKX019, and remain on track to file Nkarta’s second IND in the first quarter of 2021 for NKX019. With patients always foremost in mind, we remain focused on advancing Nkarta’s NK cell platform as the next foundation in anti-cancer cell therapy."
Recent Developments
First patient dosed in the Phase 1 clinical trial of NKX101, a first-in-class investigational NK cell cancer immunotherapy engineered to express a chimeric antigen receptor (CAR) targeting NKG2D ligand, for the treatment of relapsed/refractory acute myeloid leukemia (AML) and higher risk myelodysplastic syndromes (MDS).
Nadir Mahmood, Ph.D. appointed to the expanded role of Chief Financial and Business Officer, having previously served as Nkarta’s Chief Business Officer. He succeeded Matthew Plunkett, Ph.D., who stepped down as Chief Financial Officer in October 2020.
Alicia J. Hager, J.D., Ph.D. joined Nkarta as its Chief Legal Officer.
Anticipated Near-term Clinical Milestones
In 1Q 2021, Nkarta expects to file an Investigational New Drug (IND) Application for NKX019, an investigational NK cell therapy engineered to target tumors expressing CD19 antigen for the treatment of B-cell malignancies.
Third Quarter 2020 Financial Highlights
Cash and Cash Equivalents: As of September 30, 2020, Nkarta had cash, cash equivalents, restricted cash and short-term investments of $330.2 million, which includes proceeds from the Company’s July 2020 IPO of $265.1 million, net of underwriting discounts and commissions and other offering costs.
R&D Expenses: Research & development expenses were $9.8 million for the third quarter of 2020, which includes $0.7 million of non-cash stock-based compensation expense.
G&A Expenses: General and administrative expenses were $3.9 million for the third quarter of 2020, which includes $0.9 million of non-cash stock-based compensation expense.
Net Loss. Net loss was $13.7 million, or $0.44 per basic and diluted share, for the quarter ended September 30, 2020.
Financial Guidance
Nkarta expects its current cash and cash equivalents will be sufficient to fund its current operating plan into at least the second half of 2023. The company expects cash and cash equivalents at December 31, 2020 to be in the range of $300 million to $310 million.
About NKX101
NKX101 is an investigational, off-the-shelf cancer immunotherapy that uses natural killer (NK) cells derived from the peripheral blood of healthy donors and engineered with membrane-bound IL15 and a chimeric antigen receptor (CAR) targeting NKG2D ligands on tumor cells. NKG2D, a key activating receptor found on naturally occurring NK cells, induces a cell-killing immune response through the detection of stress ligands that are widely expressed on cancer cells. By engineering NKX101 with the proprietary NKG2D-based CAR, the ability of NK cells to recognize and kill tumor cells in pre-clinical models is increased significantly compared to non-engineered NK cells. The addition of membrane-bound IL15, a proprietary version of a cytokine for activating NK cell growth, has been shown in pre-clinical models to enhance the proliferation, persistence and sustained activity of NK cells. A multi-center Phase 1 clinical trial of NKX101 in patients with relapsed/refractory acute myeloid leukemia (AML) or higher risk myelodysplastic syndromes (MDS) is currently enrolling. Additional information about the clinical trial is available on ClinicalTrials.gov, identifier NCT04623944.
About NKX019
NKX019 is an investigational, off-the-shelf cancer immunotherapy that uses natural killer (NK) cells derived from the peripheral blood of healthy donors and engineered with a chimeric antigen receptor (CAR) targeting the CD19 antigen and membrane-bound IL15. CD19 antigen is a B-cell marker and validated target for B cell cancer therapies. NKX019 uses the CAR to target and bind to CD19, leading to an immune response that eliminates CD19-expressing cells in preclinical studies. The addition of membrane-bound IL15, a proprietary version of a cytokine for activating NK cell growth, has been shown in preclinical models to enhance the proliferation, persistence and activity of NK cells. Nkarta plans to file an IND application with the FDA in the first quarter of 2021. A Phase 1 clinical trial of NKX019 in patients with advanced relapsed/refractory B cell malignancies is planned to initiate in 2021.
About Nkarta’s NK Cell Technologies
Nkarta has pioneered a novel discovery and development platform for the engineering and efficient production of allogeneic, off-the-shelf natural killer (NK) cell therapy candidates. The approach harnesses the innate ability of NK cells to recognize and kill tumor cells, and builds upon the important advances in cellular immunotherapy and chimeric antigen receptor (CAR) biology. To enhance the intrinsic activity of NK cells, Nkarta genetically engineers the cells with a CAR that consists of a targeting receptor designed to recognize and bind to specific proteins on the surface of cancerous cells. This receptor is fused to co-stimulatory and signaling domains to amplify cell signaling and NK cell cytotoxicity. Upon binding the target, NK cells become activated and release cytokines that enhance the immune response and cytotoxic granules that lead to killing of the target cell. All of Nkarta’s NK cell therapy candidates are engineered with a membrane-bound IL15, a proprietary version of a cytokine known for activating NK cell growth, to enhance the persistence and activity of the NK cells.
Nkarta’s manufacturing process generates an abundant supply of NK cells that, at commercial scale, is expected to be significantly lower in cost than other current allogeneic and autologous cell therapies. Key to this efficiency is the rapid expansion of donor-derived NK cells using a proprietary NKSTIM cell line, leading to the production of hundreds of individual doses from a single manufacturing run. The platform also features the ability to freeze and store CAR NK cells for an extended period of time and is designed to enable immediate, off-the-shelf administration to patients at the point of care.