Immunotherapy and patients treated for cancer with microsatellite instability.

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Immunotherapy and patients treated for cancer with microsatellite instability.

Bull Cancer. 2016 Dec 12;:

Authors: Colle R, Cohen R, Cochereau D, Duval A, Lascols O, Lopez-Trabada D, Afchain P, Trouilloud I, Parc Y, Lefevre JH, Fléjou JF, Svrcek M, André T

Abstract
Microsatellite instability (MSI) is a tumor phenotype linked to somatic or germline (Lynch syndrome) inactivating alterations of DNA mismatch repair genes. A broad spectrum of neoplasms exhibits MSI phenotype, mainly colorectal cancer, endometrial cancer, and gastric cancer. MSI tumors are characterized by dense immune infiltration and high load of tumor neo-antigens. Growing evidence is accumulating on the efficacy of immune checkpoint inhibition for patients treated for MSI solid tumors. We present a comprehensive overview of MSI phenotype, its biological landscape and current diagnostic methods. Then we focus on MSI as a predictive biomarker of response to immune checkpoint inhibition in the context of colorectal cancer and non-colorectal tumors.

PMID: 27979364 [PubMed - as supplied by publisher]

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