Simufilamum (also known as PTI-125) is an oral small-molecule compound candidate that targets altered conformations of filamin A. It binds and reverts the misfolded filamin A in the brains of Alzheimer's disease patients, thereby slowing the disease's pathological progression. Additionally, PTI-125 reduces tau protein hyperphosphorylation, decreases Aβ42 aggregation and deposition, neurofibrillary tangles, and neuroinflammation. The compound demonstrates concentration-dependent efficacy in vitro, starting at 1 picomolar (pM), in both control groups and post-mortem hippocampal slices from Alzheimer's disease (AD) patients. PTI-125 is the first therapeutic candidate to preferentially bind and reverse pathogenic protein conformations.