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Table 2 Demographic characteristics, allelic frequencies, and CDKN2A methylation status

From: Influence of MIF polymorphisms on CpG island hyper-methylation of CDKN2A in the patients with ulcerative colitis

  Overall UC p14-UM p14-M pa p16-UM p16-M pb
Number of sample 159 105 54   89 70  
Mean age ± SD 41.3 ± 13.6 40.4 ± 13.4 43.0 ± 14.0 NS 42.1 ± 15.2 40.2 ± 11.3 NS
Male: female 91: 68 66: 39 25: 29 NS 50: 39 41: 29 NS
Clinical type     NS    NS
 Chronic continuous 56 38 18   31 25  
 Relapse/remitting 103 67 36   58 45  
Disease extension     NS    NS
 Total colitis 74 49 25   35 39  
 Distal or left side colitis (rs755622 G > C) 85 56 29   54 31  
 GG 93 68 25 0.010 57 36 NS
 GC 57 32 25   28 29  
 CC 9 5 4 NS 4 5 NS
 C allele freqency (rs5844572 CATT repeat) 23.6% 20.0% 30.6% 0.050 20.2% 27.9% NS
 5/5 16 13 3   9 7  
 5/6 57 40 17   31 26  
 5/7 28 16 12   12 16  
 6/6 28 19 9   23 5  
 6/7 23 14 9   12 11  
 7/7 7 3 4   2 5  
 5 repeat freqency 36.8% 39.0% 32.4%   34.3% 40.0%  
 6 repeat freqency 42.8% 43.8% 40.7%   50.0% 42.1%  
 7 repeat freqency 20.4% 17.1% 26.9% NS 15.7% 26.4% 0.036
  1. p14-UM, p14ARF unmethylated; p14-M, p14ARF methylated; p16-UM, p16INK4a unmethylated;
  2. p16-M, p16INK4a methylated; ap14-UM vs. p14-M; bp16-UM vs. p16-M; NS Not significant