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. Author manuscript; available in PMC: 2013 Oct 24.
Published in final edited form as: Arch Pathol Lab Med. 2012 May;136(5):510–516. doi: 10.5858/arpa.2010-0638-OA

Table 1.

Frequency and Size of EGFR 3′ UTR PolyA Deletion in Colorectal and Endometrial Carcinomas

Carcinoma and size of deletion MSI-H, % (No.) MSI-L, % (No.) MSS, % (No.)
 Colorectal
  1 nucleotide 38.8 (14/36) 4 (1/22)
  2 nucleotides 25 (9/36) 0 (0/22)
  3 nucleotides 13.9 (5/36) 0 (0/22)
  4 nucleotides 2.8 (1/36) 0 (0/22)
  Total 81 (29/36) 4 (1/22) 0 (0/40)
 Endometrial
  1 nucleotide 43.5 (10/23) 0 (0/24)
  2 nucleotides 17.4 (4/23) 0 (0/24)
  3 nucleotides 17.4 (4/23) 0 (0/24)
  4 nucleotides 0 (0/23) 0 (0/24)
  Total 78 (18/23) 0 (0/24)

Abbreviations: MSI-H, microsatellite instability–high; MSI-L, microsatellite instability–low; MSS, microsatellite-stable; UTR, untranslated region; EGFR, epidermal growth factor receptor.