NKGen Biotech Announces Administration of First Dose of Troculeucel to Frontotemporal Dementia Patient Under FDA-Cleared Compassionate Use Program

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NKGen Biotech
NKGen Biotech

NKGen takes a meaningful step towards potential treatment for frontotemporal dementia (“FTD”) patients with limited treatment options.

SANTA ANA, Calif., Feb. 21, 2025 (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 and allogeneic natural killer (“NK”) cell therapeutics, today announced the administration of troculeucel, an expanded autologous NK cell therapy, in an FTD patient under a single compassionate use, Investigational New Drug (“IND”) cleared by the U.S. Food and Drug Administration (“FDA”).

It is estimated that about 60,000 people in the U.S. are currently living with FTD. Up to 40% of FTD cases have a genetic component and the patient receiving troculeucel is known to carry the C9orf72 gene mutation. Currently, there is no cure for FTD and, unfortunately, no current treatments are available that slow or stop disease progression.

NKGen has begun to explore the potential therapeutic role of troculeucel for the treatment of FTD in collaboration with Mario Mendez, M.D., Ph.D., Director of the Behavioral Neurology Program at the David Geffen School of Medicine at UCLA and Jessica Rexach, M.D., Ph.D., Director of the Rexach Lab at UCLA Department of Neurology. This single, FDA-cleared, IND compassionate use will be the initial step towards a future full IND application as the dosing of the first FTD patient is part of NKGen’s ongoing effort to explore the potential of its NK cell therapy for those suffering from neurodegenerative diseases, especially when existing therapies have not been effective.

“While most of our experience has been in treating patients with Alzheimer’s and Parkinson’s, we know that there is a common theme of neuroinflammation and damage in numerous neurodegenerative diseases,” said Paul Y. Song, M.D., Executive Chairman and Chief Executive Officer of NKGen. “We have previously shown that troculeucel can cross the blood brain barrier to improve levels of amyloid, α-synuclein, and tau proteins in CSF in our treated Alzheimer’s patients as well as reduce neuroinflammation as shown by a reduction in glial fibrillary acidic protein (“GFAP”). Of note is that GFAP and tau are both consistently elevated in patients with FTD and we believe this supports the rationale of trying troculeucel in such patients. We are excited with the potential outcomes using our NK cell therapy in a difficult-to-treat patient population.”

“The potential to influence brain disease by modulating peripheral immune components represents a truly pivotal frontier in our field,” said Dr. Rexach, M.D., Ph.D., Director of the Rexach Lab at UCLA Department of Neurology. “It’s imperative that we bring these opportunities forward to address additional devastating, currently incurable neurodegenerative disorders, like frontotemporal dementia, in addition to Alzheimer’s disease. By incorporating key biomarkers of both neuroinflammation and neurodegeneration, this work is designed to yield impact and achieve critical progress. This effort will ultimately inform effective strategies for immune cell modulation in FTD, paving the way for clinically effective strategies. This work is not only incredibly important, but also exceptionally timely.”