Link. “… gantenerumab, made by Roche, which binds to clumps of amyloid and allows it to be removed from the brain, and two drugs by Lilly. One, known as LY2886721, blocks an enzyme, beta-secretase, used to make amyloid. The other, solanezumab, attaches itself to amyloid that is floating free in the brain before it clumps into plaques, facilitating its removal.”