Table 2: Distributions of clinical and pathological features in the three groups of familial breast cancers

From: Cyclin D1 expression analysis in familial breast cancers may discriminate BRCAX from BRCA2-linked cases

 BRCA1 (n=22)BRCA2 (n=16)BRCAX (n=33)P1P2
 n(%)n(%)n(%)  
Age at first diagnosis (years)      0.01100.6981
 <361464638824  
 36–505238501958  
 >50314213618  
 Median33.5 40.5 44   
         
Histological types      0.02140.3265
 Ductal167310632782  
 Medullary41816  
 Lobular1521313  
 Special type15412  
 Combineda31913  
         
Histological grade      <0.00010.5010
 1412  
 231410632164  
 31986638824  
  1. P1, BRCA1 vs BRCAX tumors; P2, BRCA2 vs BRCAX tumors.
  2. aDuctal and lobular types.