Features CDKN2A Melanoma(N=17) Non CDKN2A Melanoma (N=168) P CI 95% OR
Age: Mean (SD) 49.53 (12.674) 64.29 (17.973) 0 7.782-21.731  
Sex: Men 6 (35.3%) 80 (47.3%) 0.342    
        Women 11 (64.7%) 89 (52.7%)      
Age at diagnosis     0 8.567-24.402  
Mean (SD) 37.71 (14.581) 54.19 (18.502)      
Melanoma site     0.015    
-head/neck 0 (0%) 23 (13.6%)      
-upper limbs 1 (5.9%) 19 (11.2%)      
-lower limbs 8 (47.1%) 28 (16.6%)      
-palms 0 (0%) 10 (5.9%)      
-soles 0 (0%) 26 (15.4%)      
-trunk 8 (47.1%) 63 (37.3%)      
Breslow thickness: Mean (SD) 0.74 (0.532) 2.12 (3.490) 0 0.823-1.910  
MM in situ 10 (58.8%) 36 (21.3%) 0.002 1.756-10.765 4.348
Histological subtype     0.031    
-LMM 0 (0%) 14 (8.3%)      
-SSM 17 (100%) 109 (64.5%)      
-NM 0 (0%) 11 (6.5%)      
-ALM 0 (0%) 35 (20.7%)      
Multiple Melanomas 11 (64.7%) 28 (16.6%) 0 2.727-17.513 6.91
Past history of sunburns 7 (100%) 76 (67.9%) 0.1    
Intense solar exposure before 18year 8 (80%) 27 (23.9%) 0.001    
Table 5: Patient and tumour characteristics Carriers of a CDKN2A mutation versus non-carriers.