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Table 1 The distribution of loss of different MMR proteins in relation to morphological type

From: Relationship between mismatch repair immunophenotype and long-term survival in patients with resected periampullary adenocarcinoma

n (%) MLH1 PMS2 MSH2 MSH6
All
 1 (5.0) Intact Loss Intact Uninterpretablea
 1 (5.0) Loss Loss Intact Loss
 3 (15.0) Loss Loss Intact Intact
 4 (20.0) Intact Loss Intact Intact
 3 (15.0) Intact Intact Loss Loss
 8 (40.0) Intact Intact Intact Loss
I-type
 1 (7.7) Loss Loss Intact Loss
 3 (23.1) Loss Loss Intact Intact
 4 (30.1) Intact Loss Intact Intact
 2 (15.4) Intact Intact Loss Loss
 3 (23.1) Intact Intact Intact Loss
PB-type
 1 (14.3) Intact Loss Intact Uninterpretablea
 1 (14.3) Intact Intact Loss Loss
 5 (71.4) Intact Intact Intact Loss
  1. aLack of positive internal control staining in lymphocytes or stromal cells
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