Risitano AM, Ricklin D, Huang Y, et al. Peptide inhibitors of C3 activation as a novel strategy of complement inhibition for the treatment of paroxysmal nocturnal hemoglobinuria. Blood. 2014;123(13):2094-2101.

On page 2095 in the 27 March 2014 issue, in the first line under “Complement inhibitors,” the sequence of the peptide Cp40 is missing an alanine (Ala) residue at position 10. The sequence should read “dTyr-Ile-[Cys-Val-Trp(Me)-Gln-Asp-Trp-Sar-Ala-His-Arg-Cys]-mIle-NH₂.” The error has been corrected in the online version, which now differs from the print version.