Seeing that ST6Gal1 is the sole enzyme outside the nervous system that can add sialic acid in such an α2-6 linkage to terminate N-linked glycan cores, we included Cas9/CRISPR-generated ST6Gal1 knockdown (KD) BCP-ALL cells in this analysis [58]. Here, ST6GAL1 is linked to acute lymphoblastic leukemia.