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McCoy, Patrick; Mangiola, Stefano; Macintyre, Geoff; Hutchinson, Ryan; Tran, Ben; Pope, Bernard; Georgeson, Peter; Hong, Matthew K H; Kurganovs, Natalie; Lunke, Sebastian; Clarkson, Michael J; Cmero, Marek; Kerger, Michael; Stuchbery, Ryan; Chow, Ken; Haviv, Izhak; Ryan, Andrew; Costello, Anthony J; Corcoran, Niall M; Hovens, Christopher M
Prostate cancer and prostatic diseases, 12/2021, Letnik: 24, Številka: 4Journal Article
Recent publications have shown patients with defects in the DNA mismatch repair (MMR) pathway driven by either MSH2 or MSH6 loss experience a significant increase in the incidence of prostate cancer. Moreover, this increased incidence of prostate cancer is accompanied by rapid disease progression and poor clinical outcomes. We show that androgen-receptor activation, a key driver of prostate carcinogenesis, can disrupt the MSH2 gene in prostate cancer. We screened tumours from two cohorts (recurrent/non-recurrent) of prostate cancer patients to confirm the loss of MSH2 protein expression and identified decreased MSH2 expression in recurrent cases. Stratifying the independent TCGA prostate cancer cohort for MSH2/6 expression revealed that patients with lower levels of MSH2/6 had significant worse outcomes, in contrast, endometrial and colorectal cancer patients with lower MSH2/6 levels. MMRd endometrial and colorectal tumours showed the expected increase in mutational burden, microsatellite instability and enhanced immune cell mobilisation but this was not evident in prostate tumours. We have shown that loss or reduced levels of MSH2/MSH6 protein in prostate cancer is associated with poor outcome. However, our data indicate that this is not associated with a statistically significant increase in mutational burden, microsatellite instability or immune cell mobilisation in a cohort of primary prostate cancers.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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