Talk:Microsatellite instability in colorectal cancer

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Heterogenous staining

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6463865/

MLH1 loss and BRAF V600E

"... epigenetic inactivation of MLH1 in tumors that often carry mutations in oncogenic BRAFV600E." https://pubmed.ncbi.nlm.nih.gov/25386108/

Unusually MMR loss

https://pmc.ncbi.nlm.nih.gov/articles/PMC8860743/ - isolated MSH6 and isolated PMS2 are the most common of the uncommon loss patterns