Mismatch repair deficiency and microsatellite instability in triple-negative breast cancer
To investigate the status of mismatch repair (MMR) and microsatellite instability (MSI) in triple-negative breast cancer (TNBC) and to examine correlations between MMR/MSI status and clinicopathological parameters. Samples were collected for MMR gene testing by NGS in the case with MSH2 expression loss.