It has been shown that NKp30 is blocked by exosomal and soluble BCL-2-associated athanogene-6 (BAG6) which are released by cancer cells; however, during infection with certain viruses, soluble influenza haemagglutinin (HA) and pp65 take similar effect to block NKp30 or NKp46. Here, NCR1 is linked to cancer.