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Table 1 Patient characteristics

From: Loss of heterozygosity at thymidylate synthase locus in Barrett's metaplasia, dysplasia, and carcinoma sequences

The number of patients 100
   Male 73
   Female 27
Age (median) 65
Pathological type (in descending order of)  
   Reflux esophagitis 30
   Intestinal metaplasia 22 (※)
   Dysplasia 4
   Barrett's adenocarcinoma 44 (※※)
Race  
   Caucasian 89
   Asian 6
   Hispanic 3
   African-American 1
   Native American 1
TS genotype in normal tissue  
   2R/2R 24
   2R/3R 57
   3R/3R 19
  1. ※ Including 4 patients from each of whom 2 samples of different diseased tissues were taken (e.g: reflux esophagitis and intestinal metaplasia).
  2. ※※ Including 9 patients from each of whom 2 samples of different diseased tissues were taken, and 5 patients from each of whom 3 were taken.