Kadota et al. reported that CD10 expression is positively cases in mesothelioma correlated with higher-grade histological types: CD10 expression was identified in 42% of epithelioid nonpleomorphic tumors, 57% of epithelioid pleomorphic tumors, 79% of biphasic tumors in the sarcomatoid area, and 93% of sarcomatoid tumors. Here, MME is linked to mesothelioma.