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Molecular Pathology of Small Cell Carcinoma

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Precision Molecular Pathology of Lung Cancer

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Abstract

Small cell lung carcinoma (SCLC) is a high-grade neuroendocrine carcinoma with a poor prognosis, comprising approximately 15% of all lung cancers. SCLC differs greatly from carcinoid tumors in terms of molecular alterations, supporting the concept that it more likely arises from a different precursor cell. SCLC is characterized by a high burden of molecular alterations in general, and essentially all cases harbor inactivation of tumor suppressor genes TP53 and RB1. Approximately 25% of cases contain inactivating mutations in NOTCH family genes, and SCLC may also harbor abnormalities of the PI3K/AKT/mTOR pathway, CREBBP, EP300, PTEN, MYC, FGFR1, and SOX2, among others. In spite of the high mutational burden, SCLC does not harbor mutations amenable to currently available targeted molecular therapies, but ongoing investigation of several potential targets continues.

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Correspondence to Mary Beth Beasley MD .

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Beasley, M.B. (2018). Molecular Pathology of Small Cell Carcinoma. In: Cagle, P., et al. Precision Molecular Pathology of Lung Cancer. Molecular Pathology Library. Springer, Cham. https://doi.org/10.1007/978-3-319-62941-4_14

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  • DOI: https://doi.org/10.1007/978-3-319-62941-4_14

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  • Online ISBN: 978-3-319-62941-4

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