γ secretase(aβ38)

AZ1136 is a highly selective γ-secretase modulator (GSM) that reduces the levels of Aβ42 and Aβ40, with IC50 values of 990 and 1400 nM, respectively. It increases the levels of Aβ39 and Aβ37 without affecting Aβ38. AZ1136 is utilized in Alzheimer's disease research.

GSK-B, a potent γ-secretase modulator, decreases Aβ42, increases Aβ38 with no effect on Aβ40 levels.

Semagacestat (LY450139) (LY450139) is a γ-secretase blocker for Aβ42/Aβ40/Aβ38 (IC50: 10.9/12.1/12.0 nM) and also inhibits Notch signaling (IC50: 14.1 nM).