Giona F, Teofili L, Capodimonti S, et al. CALR mutations in patients with essential thrombocythemia diagnosed in childhood and adolescence. Blood. 2014;123(23):3677-3679.

On page 3678 in the 5 June 2014 issue, there is an error in a gene name in the text. The letters “L” and “R” were transposed in “CALR” such that the name reads “CARL.” Whenever the incorrect name “CARL” appears, it should read “CALR.”