β-Amyloid (1-15) is a fragment of β-Amyloid peptide. Beta-amyloid is a peptide that forms amyloid plaques in the brains of Alzheimer's disease (AD) patients. IC50 & Target: Amyloid-β^[1] In Vitro: β-Amyloid (1-15) is produced by concerted β- and α-secretase cleavage of amyloid-β protein precursor (AβPP). β-Amyloid (1-15) seems to be a sensitive acute pharmacodynamic biomarker for γ-secretase inhibition and may have several advantages compared to measuring longer CSF Aβ species. ^[1].