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- W2904480314 abstract "ALK-positive (ALK+) lung adenocarcinoma usually shows a more advanced-staged disease with frequent nodal metastasis and highly aggressive outcomes compared with EGFR-mutated lung cancers. The aim of this study was to investigate the expression profiles of several mucins in ALK + lung cancers to gain insight into the relationship between the more aggressive biological nature of ALK + lung cancers and the role of mucins. We examined the immunohistochemical profiles of mucins MUC1, MUC2, MUC5AC, and MUC6 in 19 ALK + lung cancers compared with 42 EGFR-mutated lung cancers. ALK + cancers were found to occur in younger patients and were characterized by a solid-predominant histologic subtype with frequent signet ring cells and peritumoral muciphages. By contrast, EGFR-mutated cancers lacked ALK-specific histological patterns. Although all MUC1 and MUC5AC were expressed in both subtypes, MUC1 expression in ALK + cancers was visualized exclusively through cytoplasmic staining, whereas those in EGFR-mutated cancers were predominantly membranous staining in apical area (92.9%) and focally in cytoplasmic staining (7.1%). MUC5AC expression in ALK + cancers was exclusively visualized through cytoplasmic staining (100%), whereas EGFR-mutated cancers showed predominantly perinuclear dot-like patterns (90.5%) and focal cytoplasmic staining (9.5%). MUC2 and MUC6 expression was not detected in either type of lung cancer. CONCLUSIONS: The high frequency of both MUC1 and MUC5AC cytoplasmic expression, coupled with a lack of MUC2 and MUC6 expression in ALK + lung cancer may contribute to the biologically aggressive behavior of ALK + cancer. Inhibitors to these types of mucins may thus act as a barrier to cancerous extension reducing their aggressive behavior." @default.
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- W2904480314 date "2019-03-01" @default.
- W2904480314 modified "2023-10-16" @default.
- W2904480314 title "Expression of mucins (MUC1, MUC2, MUC5AC and MUC6) in ALK-positive lung cancer: Comparison with EGFR-mutated lung cancer" @default.
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- W2904480314 doi "https://doi.org/10.1016/j.prp.2018.12.011" @default.
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