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Determining tumor mutation load using an NGS-based, target gene panel

      Background: In several cancer models, it was shown that tumor mutation load correlates with response to immune checkpoint blockade therapy. However, whole exome sequencing of FFPE samples is not ideal for implementation on molecular pathology laboratories. In colorectal cancer (CRC), mutation load is correlated with microsatellite instability (MSI), which can therefore be used as surrogate marker for mutation load. In this study, we aimed at determining whether a target NGS-based mutation panel can be used for routine testing of mutation load in cancer, by assessing its performance in identifying MSI+ and MSI- CRC samples.
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