
Detecting Alzheimer’s Earlier with a Simple Blood Test with Yuanbing Jiang
Early detection is everything when it comes to Alzheimer’s, but for years, the tools available have made that nearly impossible at scale. Today’s conversation takes a closer look at a breakthrough that could change that equation in a very real way. My guest is Dr. Yuanbing Jiang, also known as Jason, a research assistant professor in the Division of Life Science at the Hong Kong University of Science and Technology. His work sits at the intersection of neuroscience, proteomics, and large-scale data analysis, with a focus on finding practical ways to detect and understand neurodegenerative disease much earlier than we’ve been able to before.
We talk about the development of a 21-protein blood biomarker panel for Alzheimer’s disease, a test that’s reaching about 96% accuracy in detecting early-stage cases and has already been used in clinical settings in Hong Kong. Jason walks through how advances in high-sensitivity proteomic assays made it possible to measure thousands of proteins at once, and why moving beyond a narrow focus on amyloid markers has been key to improving accuracy. We also get into what it actually means to stage Alzheimer’s biologically, not just diagnose it, and how that changes the way clinicians think about treatment timing.
There’s also a broader story here about access and impact. This blood-based approach is faster, less invasive, and significantly more affordable than traditional methods like PET imaging, which opens the door for wider use in different healthcare settings around the world. We discuss what earlier diagnosis means for patients and families, how it could accelerate drug development and clinical trials, and why this kind of innovation is a strong example of what can happen when academic research, technology transfer, and real-world application come together at the right moment.
In This Episode:
[03:47] Jason explains why Alzheimer’s begins developing 10–20 years before symptoms appear and why patients often miss the treatment window.
[04:31] Traditional diagnostics like PET imaging and spinal fluid tests are effective but too expensive or invasive for widespread use.
[05:12] The idea emerges to create a simple blood test that could be faster, cheaper, and accessible to a much broader population.
[06:08] New high-sensitivity proteomic technology makes it possible to measure over 1,000 blood proteins with dramatically improved accuracy.
[06:56] His team identifies more than 400 potential biomarkers and narrows them down to a 21-protein panel for detection.
[07:43] Different biomarkers reveal distinct stages of Alzheimer’s, with immune system changes appearing earlier than neurological decline.
[08:37] The test doesn’t just detect disease, it helps determine what stage a patient is in, which is critical for treatment decisions.
[09:41] Early-stage identification becomes essential as certain drugs only work when intervention happens before major decline.
[11:03] Two key innovations drive the breakthrough: ultra-sensitive detection technology and a whole-body view beyond amyloid markers.
[12:06] Expanding beyond amyloid to include immune, metabolic, and vascular signals improves both accuracy and disease understanding.
[13:02] High diagnostic accuracy reduces misdiagnosis, which can significantly impact patient outcomes and care planning.
[13:58] Validation across Chinese and Spanish cohorts shows the test works consistently across different populations.
[15:02] The blood test reduces diagnostic costs by up to 88%, making early detection more feasible in resource-limited settings.
[16:07] Earlier diagnosis allows patients to access treatment sooner and gives families time to plan and prepare.
[16:53] Blood-based biomarkers streamline clinical trial recruitment by quickly identifying qualified patients.
[17:36] Pharmaceutical companies can now screen large populations more efficiently, accelerating drug development timelines.
[18:22] The next phase focuses on large-scale validation, regulatory approval, and expansion into global healthcare systems.
[19:28] AI is expected to enhance diagnosis, risk prediction, and therapeutic development using biomarker data.
[20:34] Jason shares optimism that earlier detection and better tools could significantly change Alzheimer’s outcomes in the next decade.
[21:12] The conversation closes with the broader impact, and how this innovation could reshape diagnosis, treatment, and patient care worldwide.
Resources:
Yuanbing JIANG - The Hong Kong University of Science and Technology
Yuanbing JIANG - Google Scholar
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