MICA and breast cancer: Some researchers implied that high expression of MICA/B resulted in a favorable outcome concerning the relapse-free period in early BC patients.35 However, higher MICA expression was found as an indicator of poor prognosis in BC.36 In addition, most previous studies were focused on the association of total MICA/B or MICA expression with clinical outcomes, whereas few considered the clinicopathological significance of MICB.