Discover and read the best of Twitter Threads about #amyloid

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So @Merck’s BACE-1 inhibitor Verubecestat resulted in “near-maximal reduction” of amyloid-beta in cerebrospinal fluid and “modest reduction” in brain amyloid. But it didn’t help even #Alzheimer’s disease, even "mild" Alzheimer's. A few thoughts:
1. Many companies are holding on to the hope that giving #tau- and #amyloid-busting drugs earlier, before Alzheimer's sets in, could prevent the disease. The FDA might even be open to using tau and amyloid as biomarkers to approve #Alzheimers drugs cen.acs.org/articles/96/i9…
2. But if we already know these drugs can lower amyloid-beta levels and *not* stop disease progression, is that really a good idea? I'd love to see the long term studies done, but the idea of drug approval based on biomarkers, and not cognitive markers, seems like a can of worms.
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