Skip to main content

Table 3 Analysis of ActRIIB-ECD on GDF8 and GDF11 activity by luciferase reporter assay

From: Structural basis for potency differences between GDF8 and GDF11

Ligand

Receptor

IC50 (nM)

IC50 (nM) 95% CIa

Log[IC50(M)] ± SEMb

Hill slope

Hill slope 95% CI

GDF8

ActRIIB-ECDc

12.4

12.24 to 13.66

−7.9 ± 0.02

−1.73

−1.99 to −1.47

GDF11

13.0

12.61 to 15.46

−7.9 ± 0.02

−1.57

−1.79 to −1.35

GDF8

Fc-ActRIIB-ECD

3.0

2.60 to 3.38

−8.5 ± 0.03

−2.24

−2.82 to −1.65

GDF11

10.3

9.40 to 11.125

−8.0 ± 0.02

−8.05

−10.46 to −5.63

  1. a CI confidence interval
  2. b SEM standard error of the mean
  3. c ECD extracellular domain