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. 2021 Mar 23;479(3):471–479. doi: 10.1007/s00428-021-03082-w

Table 4.

Agreement for each MMR protein as determined by IHC and Idylla MSI test in the EC Set II (n=33)

IHC dMMR Idylla MSI Idylla MSS MSI/dMMR agreement
MLH1 13 11 2 11/13 (84.6%)
MSH2 4 4 0 4/4 (100%)
MSH6 16 6 10 6/16 (37.5%)
Total 33 21 12 21/33 (63.6%)

dMMR deficient MMR protein expression, MMR mismatch repair, MSI microsatellite instable