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CTAD 2025 | Phase I findings of ABCA-1 agonist treatment with CS6253 in older adults: potential treatment for AD

Hussein Yassine, MD, Keck School of Medicine of USC, Los Angeles, CA, shares findings from a Phase I trial of ABCA-1 agonist treatment with CS6253 in older adults. Prof. Yassine highlights positive findings in animal studies that were mimicked in humans in the Phase I trial, suggesting this may be a potential therapeutic option for Alzheimer’s disease (AD). This interview took place at the 18th Clinical Trials on Alzheimer’s Disease (CTAD) Conference in San Diego, CA.

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Transcript

So basically, we have known that there is a relationship between lipids and Alzheimer’s for a long time. And one way to test this is to make lipoprotein particles. In this abstract, we present the findings of a peptide called CS6253 that induces the formation of HDL-like particles. These are good cholesterol-containing particles. It efficiently binds to ABCA1 to make these particles. And we have shown that in preclinical animal models, it had favorable effects...

So basically, we have known that there is a relationship between lipids and Alzheimer’s for a long time. And one way to test this is to make lipoprotein particles. In this abstract, we present the findings of a peptide called CS6253 that induces the formation of HDL-like particles. These are good cholesterol-containing particles. It efficiently binds to ABCA1 to make these particles. And we have shown that in preclinical animal models, it had favorable effects. Then it passed all the safety testings in mice, rodents, monkeys. And finally, we show now Phase I human study findings in which it was safe. And not only that, it mimicked the findings in monkeys where we increased APOE and showed some signs in a very small population that A-beta might be changing in plasma. Just to note that CS6253 does not cross into the brain or does not cross the blood-brain barrier. So these are peripheral effects.

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