Table 1. Affinity measurements of anti-gD variant binding to mFcRn by surface plasmon resonance.

Variant	kon (M−1s−1)	koff (s−1)	KD (nM)
IgG1 WT	6160	0.0037	601
IgG1 FcRn+	19100	0.0021	108
IgG1 FcRn-	1230	0.1146	93000