A Novel PET Tracer Targets TDP-43 Pathology for Early Diagnosis
Personalized briefing
Discovery of the day · Neurology
Development and characterization of a novel TDP‐43 positron emission tomography tracer: [18F]JNJ‐TDP43‐1
Dear Kelly M Leyden, this is your personalized scientific intelligence briefing — curated for your work in Neurology.
Key finding
Medicine · Neurology
Discovery of the day
Researchers have developed and characterized a novel positron emission tomography (PET) tracer, [¹⁸F]JNJ-TDP43-1, designed to specifically target pathological TDP-43 aggregates, a key proteinopathy in amyotrophic lateral sclerosis (ALS), frontotemporal dementia (FTD), limbic-predominant age-related TDP-43 encephalopathy (LATE), and a subset of Alzheimer’s disease (AD). The tracer demonstrated high binding affinity for pathological TDP-43 (Kd = 7.1 nM) with remarkable selectivity over other proteinopathies, and in vivo PET imaging in rodents and nonhuman primates confirmed robust brain uptake, rapid washout, and confirmed target engagement in an AAV-hTDP43 disease model. For your work in neurodegeneration, this advancement provides a direct imaging modality to correlate TDP-43 pathology with blood-based proteomic biomarkers, enabling multimodal biomarker integration that is critical for tracking disease activity and progression, and for validating diagnostic assays that translate into clinically actionable insights across Alzheimer’s, Parkinson’s, and related conditions.
Novelty
93%
Rigor
85%
Significance
91%
Validity
84%
Clarity
88%
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