alexa Squamous-cell carcinomas of the lung: emerging biology, controversies, and the promise of targeted therapy.
Biomedical Sciences

Biomedical Sciences

Biology and Medicine

Author(s): Drilon A, Rekhtman N, Ladanyi M, Paik P

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Abstract Squamous-cell carcinomas of the lung (SQCLCs) are defined by unique clinicopathological and molecular characteristics that have evolved substantially over time. Historically, these neoplasms were the most common subtype of non-small-cell lung cancers and were regarded as central tumours with high molecular complexity without targetable genetic abnormalities. Today, the incidence of SQCLCs is surpassed by adenocarcinomas of the lung with a shift towards peripheral squamous tumours. Differential responses to cytotoxic and biological treatments have reshaped our approach to standard therapies. Additionally, evidence of unique biology has emerged with the discovery of SOX2 amplification, NFE2L2 and KEAP1 mutations, PI3K pathway changes, FGFR1 amplification, and DDR2 mutations. These discoveries have ushered in a new era of targeted therapeutic agents for patients with this disease. This Review draws attention to the distinct clinical and pathological characteristics of SQCLCs, summarises present experience with existing cytotoxic and targeted therapies, and discusses emerging treatments based on new insights into the biology of this disease. Copyright © 2012 Elsevier Ltd. All rights reserved. This article was published in Lancet Oncol and referenced in Biology and Medicine

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