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NKGen Biotech, Inc. Announces Dosing of First Patient in its Phase 1/2a Trial with Autologous NK Cell Product, SNK01, for the Treatment of Moderate Alzheimer’s Disease

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NKGen Biotech, Inc. (Nasdaq: NKGN) announced positive results from the Phase 1 dose-escalation safety trial of SNK01, a non-genetically modified NK cell product, showing improvement in neuroinflammation and cognitive function in patients with Alzheimer's Disease. The company has dosed the first patient in its Phase 1/2a trial to evaluate the safety and efficacy of SNK01 in moderate AD, with plans for an interim data readout in Q3 2024.
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Insights

The preliminary results from NKGen Biotech's Phase 1 trial of SNK01 in Alzheimer's Disease patients indicate a potential breakthrough in the treatment of moderate AD. The use of autologous, non-genetically modified NK cells is a novel approach, diverging from the more common amyloid-targeting therapies. Enhanced cytotoxicity and activating receptor expression are key features that could potentially modify disease progression by targeting neuroinflammation, a significant factor in AD pathology.

From a medical research perspective, the ability of SNK01 to cross the blood-brain barrier and impact cognitive function is noteworthy. The ADCOMS composite score, used to assess cognitive function, showed stability or improvement in a high percentage of the Phase 1 trial participants, which is encouraging given the historically high failure rate of AD trials. The dosing increase to 6 billion cells could amplify these effects and the extended dosing period over a year will provide substantial data on long-term safety and efficacy.

NKGen Biotech's advancement into a Phase 1/2a trial with SNK01 represents a significant milestone that could affect the company's financial outlook. Alzheimer's Disease, with its large unmet medical need and substantial market potential, offers a lucrative opportunity for novel treatments. The stock market often reacts positively to promising clinical trial results in the biotech sector, especially for diseases like AD where effective treatments are scarce.

The planned interim data readout in Q3 2024 will be a critical event for investors. Positive data could lead to increased investor confidence and potential partnerships or funding opportunities. However, given the high risk associated with clinical trials, especially in AD research, stakeholders should remain cautious. It's essential to monitor the trial's progress and manage expectations, as the path from clinical success to commercialization is complex and uncertain.

Within the biotech industry, NKGen Biotech's focus on moderate Alzheimer's Disease represents a strategic move to target a stage of the disease that has been underserved by current therapeutic options. The decision to increase the cell dosage in the Phase 1/2a trial is an aggressive strategy that may differentiate SNK01 from other therapies in development. The extended dosing regimen and the potential for improved cognitive outcomes could position NKGen as a leader in this space if the results are positive.

It is important to note that the Alzheimer's Drug Discovery Foundation reports that the failure rate of AD drugs in development is over 99%. Therefore, the success of SNK01 could not only be a breakthrough for patients but also set a new precedent in AD treatment research. However, the industry will be watching closely, as the success of this trial could impact investment and research directions across the sector.

NKGen Biotech’s autologous clinical program product candidate, SNK01, demonstrated improvement in neuroinflammation and cognitive function in patients with Alzheimer’s Disease (“AD”) in its Phase 1 dose-escalation safety trial.

SNK01 consists of a non-genetically modified NK cell product with enhanced cytotoxicity and activating receptor expression for the treatment of moderate AD.

Initial patient in this Phase 1/2a trial received 6 billion cells, 50% more than the maximum dosing from the Phase 1 trial.

SANTA ANA, Calif., Dec. 28, 2023 (GLOBE NEWSWIRE) -- NKGen Biotech, Inc. (Nasdaq: NKGN) (“NKGen” or the “Company”), a clinical-stage biotechnology company focused on the development and commercialization of innovative autologous, allogeneic, and CAR-NK natural killer cell therapeutics, today announced the dosing of the first patient in its Phase 1/2a trial evaluating SNK01, a cryopreserved autologous, non-genetically modified NK cell therapy product with enhanced cytotoxicity and activating receptor expression. This Phase 1/2a trial is evaluating safety and tolerability in participants with moderate AD.

The Phase 1 is an open label safety evaluation to determine the maximum tolerated dose and/or recommended Phase 2 dose of SNK01. The Phase 2 is a randomized double-blind trial evaluating the safety and efficacy of SNK01 in moderate AD.

“We are excited to have dosed our first patient in the Phase 1/2a SNK01 clinical trial in moderate Alzheimer’s patients using our next generation cryopreserved product to address an unmet need,” said Paul Song, M.D., CEO of NKGen Biotech, Inc. “While the vast majority of therapies have remained focused on the mild cognitive impairment or mild dementia patient population, we wanted to focus our efforts on a more advanced population for which there is currently no approved disease-modifying therapy. Whereas our previous Phase 1 trial suggested that our enhanced NK cells (given intravenously) were safe and well tolerated, and could cross the blood brain barrier to have a positive effect on brain protein aggregates as well as on neuroinflammation, we only gave four doses and did not give more than 4 billion cells per dose.”

Dr. Song continued, “Despite the fact that 2/3 of our patients in our Phase 1 trial received what we consider suboptimal dosing, 90% had stable or improved cognitive function as measured with the ADCOMS composite score at 11 weeks (one week after the final dose). In this new randomized trial, we will be giving 6 billion cells per dose every three weeks for a full year (17 total doses) versus placebo. With this increased overall dosing regimen, we hope to show even greater cognitive benefit and greater effects in protein and neuroinflammation levels. We are planning on conducting an interim data readout in Q3 2024.”

About SNK01

SNK01 is a novel cell-based, patient specific ex vivo expanded autologous natural killer (NK) cell, immunotherapeutic drug candidate. NKGen Biotech, Inc. is developing SNK01 for the treatment of neurodegenerative disorders and a broad range of cancers.

About NKGen

NKGen is a clinical-stage biotechnology company focused on the development and commercialization of innovative autologous, allogeneic, and CAR-NK NK cell therapies. NKGen is headquartered in Santa Ana, California, USA. For more information, please visit www.nkgenbiotech.com.

Forward-Looking Statements

Certain statements made in this press release are “forward-looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements may be identified by the use of words such as “anticipate”, “believe”, “could”, “continue”, “expect”, “estimate”, “may”, “plan”, “outlook”, “future” and “project” and other similar expressions that predict or indicate future events or trends or that are not statements of historical matters. Forward-looking statements are subject to risks and uncertainties, many of which are outside of the Company’s control, actual results may differ materially from those expressed or implied by such forward-looking statements. Forward-looking statements include, but are not limited to, statements regarding the Company’s plans for developing SNK01, including the expected timing of announcing further results from its ongoing Phase 1 clinical trial; the Company’s plans for a Phase 1/2a clinical trial and expectations that the Phase 1/2a clinical trial may show greater cognitive benefit and further reduction in neuroinflammation; the expected trial design for the Phase 1/2a clinical trial; and potential benefits of the Company’s product candidates.

Risks that contribute to the uncertain nature of the forward-looking statements include: the Company’s ability to execute its plans and strategies; risks related to performing clinical studies; the risk that initial and interim results of a clinical trial do not necessarily predict final results and that one or more of the clinical outcomes may materially change as patient enrollment continues, following more comprehensive reviews of the data, and as more patient data become available; the FDA’s clearance of the Company’s IND for its Phase 1/2a clinical trial should not be relied on as a validation of SNK01’s potential or the Company’s approach; potential delays in the commencement, enrollment and completion of clinical studies and the reporting of data therefrom; the risk that studies will not be completed as planned; and NKGen’s ability to raise additional funding to complete the development of its product candidates. These forward-looking statements are based upon NKGen’s current expectations and involve assumptions that may never materialize or may prove to be incorrect. The foregoing list of factors is not exhaustive. These and other risks and uncertainties are described more fully under the caption “Risk Factors” and elsewhere in the Company’s filings and reports, which may be accessed for free by visiting the Securities and Exchange Commission’s website at www.sec.gov and on the Company’s website under the subheading “Investors”. Investors should take such risks into account and should not rely on forward-looking statements when making investment decisions. All forward-looking statements contained in this press release speak only as of the date on which they were made. The Company undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made, except as required by law. You should read this press release completely and with the understanding that the Company’s actual future results or performance may be materially different from what we expect.

Contacts:
Internal Contact:
Denise Chua, MBA, CLS, MT (ASCP)
Vice President, Investor Relations and Corporate Communications
NKGen Biotech, Inc.
dchua@nkgenbiotech.com

External Contacts:
Chris Calabrese
Managing Director
LifeSci Advisors, LLC
ccalabrese@lifesciadvisors.com

Kevin Gardner
Managing Director
LifeSci Advisors, LLC
kgardner@lifesciadvisors.com


FAQ

What is the name of the company that announced the positive results from the Phase 1 dose-escalation safety trial of SNK01?

NKGen Biotech, Inc. (Nasdaq: NKGN) announced the positive results.

What is the product candidate that demonstrated improvement in neuroinflammation and cognitive function in patients with Alzheimer's Disease?

The product candidate is SNK01.

What is the purpose of the Phase 1/2a trial evaluating SNK01?

The trial aims to evaluate the safety and efficacy of SNK01 in moderate AD.

Who is the CEO of NKGen Biotech, Inc.?

The CEO is Paul Song, M.D.

When is the planned interim data readout for the trial?

The company plans to conduct an interim data readout in Q3 2024.

NKGen Biotech, Inc.

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Biotechnology
Biological Products, (no Disgnostic Substances)
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United States of America
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