MICA and neoplasm: The data obtained from another study focusing on MICA and MICB (MHC class I‐related chain A and B) in TME (tumor microenvironment), revealed that these stimulatory NKG2D receptor ligands are downregulated due to the aberrant expression of oncogenic miR‐20a in human breast CSCs and ultimately lead to the escape of these CSCs from NK cell killing [28, 82, 83].