On pages 2070 and 2071 in the 13 April 2017 issue, there are errors in the text. In the third sentence under “Genomic organization and functional domains of RUNX1” on page 2070, “distal promoter P1” should read “proximal promoter P2.” In the next sentence, “proximal promoter P2” should read “distal promoter P1.” In the third sentence of the legend to Figure 1 on page 2071, “P1” should read “P2” and “P2” should read “P1.” The errors have been corrected in the online version, which now differs from the print version.