In this article (Cancer Res 2014;74:2569–78), which appeared in the May 1, 2014 issue of Cancer Research (1), the chemical structures in Fig. 1 were reproduced improperly. A revised version of Fig. 1 is below. The publisher regrets this error.

The online version has been corrected and is different from the print.

1.
Perrino
E
,
Steiner
M
,
Krall
N
,
Bernardes
GJL
,
Pretto
F
,
Casi
G
, et al
Curative properties of noninternalizing antibody–drug conjugates based on maytansinoids
.
Cancer Res
2014
;
74
:
2569
78
.