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. 2017 Feb 14;51(2):129–136. doi: 10.4132/jptm.2016.12.09

Table 3.

Immunohistochemical patterns of mismatch repair deficiencies

Loss Tumor
Primary Metastatic
MLH1/PMS2 0 0
MSH2/MSH6 6 8
MSH6 only 0 2
PMS2 only 1 1
Combineda 0 3
a

Combined: MSH6 + PMS2 (1 case), MLH1 + MSH6 + PMS2 (1 case), MSH2 + PMS2 (1 case).