Likewise, the CSC markers of different cancers, such as CD24+, CD133, CD90+, ESA+ (EpCAM+), CD166, CD44, CD49f, integrins a2/b1, BCL-2, β-catenin, BMI-1, BrdU, Ki67, CD44, CD133, CD49f (integrin a6), CK5/14, CK8/18, GST-p, ABCG2/Hoechst 33342, OCT3/4, P63, P27, SCA-1, SMO, and CD200, can be targeted using engineered anti-antibody-coated exosomes. This evidence concerns the gene CD44 and cancer.