Table 3 Binding affinity of aducanumab for truncated Aβ peptides.

From: Structural and kinetic basis for the selectivity of aducanumab for aggregated forms of amyloid-β

Aβ peptide

Binding activity (EC50, nM)

Fold reduction (relative to Aβ1-42)

1–42a

0.34

1.0

1–9a

0.54

1.4

1–12a

0.55

1.4

1–16a

0.50

1.3

2–42

0.36

1.0

3–42

0.54

1.4

pE3–42b

12

31

4–42

15

41

5–42

36

96

6–42

140

390

8–42

150

400

  1. aC-terminally biotinylated peptide, bpE = N-terminal pyroglutamate.