NKGen Biotech Administers First Dose of Troculeucel to Alzheimer's Patient Who Continued to Decline Cognitively While on Prior Amyloid-Targeting Therapy

Core Viewpoint - NKGen Biotech has initiated the administration of troculeucel, an autologous NK cell therapy, to a patient with mild-stage Alzheimer's disease under a compassionate use IND authorization from the FDA, marking a significant step in expanding treatment options for patients who do not respond to existing therapies [1][2]. Company Overview - NKGen Biotech is a clinical-stage biotechnology company focused on developing and commercializing innovative autologous and allogeneic NK cell therapeutics, headquartered in Santa Ana, California [4]. - Troculeucel, the company's novel cell-based immunotherapeutic drug candidate, is being developed for neurodegenerative disorders and various cancers, with its International Nonproprietary Name (INN) approved by the WHO [5]. Clinical Development - The ongoing double-blind randomized Phase 2a trial by NKGen is primarily focused on moderate-stage Alzheimer's disease, while the recent IND authorization allows exploration in mild-stage Alzheimer's, particularly for patients unresponsive to first-line therapies [2]. - Clinical experience with troculeucel indicates it is well-tolerated and capable of crossing the blood-brain barrier, improving levels of amyloid, α-synuclein, and tau proteins in cerebrospinal fluid, and reducing neuroinflammation [3]. Industry Context - Currently, there are two FDA-approved amyloid-targeting therapies for Alzheimer's patients with mild cognitive impairment, which slow cognitive decline but do not halt disease progression or improve cognitive function [3]. - The exploration of troculeucel in patients progressing on standard therapies could provide insights into disease mechanisms and support combination treatment strategies [3].