CD82 and cancer: Different types of cancers showed KAI1 loss of expression especially those in advanced stages (Christgen et al., 2009; Malik et al., 2009a; Malik et al., 2009b; Malik et al., 2009c; Mooez et al., 2011; Shiwu et al., 2012; Scarpino et al., 2013; Zhang et al., 2013).