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Table 1 The correlation between MGMT immuno-expression and clinical characteristics (n = 136)

From: Expression profiling of O6 methylguanine-DNA-methyl transferase in prolactinomas: a correlative study of promoter methylation and pathological features in 136 cases

  MGMT immuno-expression  
Variables Low level or no expression (n = 106) High expression (n = 30) P value
Age (mean ± SD) (year) 31.34 ± 11.88 37.8 ± 11.68 0.009
Maximum diameter (mean ± SD) (mm) 22.41 ± 12.75 24.63 ± 13.61 0.408
Gender    0.369
 Female 61 20  
 Male 45 10  
Recurrent prolactinoma    0.428
 No 88 23  
 Yes 18 7  
Invasive prolactinoma    0.75
 No 60 16  
 Yes 46 14  
Atypical prolactinoma    0.044
 No 86 29  
 Yes 20 1  
  1. Age and tumor maximum diameter were compared with the Student’s t-test. Categorical analysis of variables was performed using either the χ2 test or Fisher’s exact test, as appropriate