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The transformation of AngIV and earlier described analogs into clinically useful agents has been impeded by their lack of metabolic stability and inability to penetrate the blood-brain barrier (BBB)

4 Tolerability in year 2 is underappreciated Amgen noted year-two treatment was very well tolerated on the quarterly dose (full data still pending)

Le, E.C

It was initially thought that the presence of a particular histidine residue at the 63rd position with a pK a of around 6.4 probably serves a critical role in mediating this pH dependent switch of the protein

Additionally, changes also occurred in the distribution of the sleep stages REM and N3 within the sleep cycle

[Abstract]2024;72(7):658-663