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Table 1 Characteristics of patients and at risk individuals

From: Novel sequence variants and a high frequency of recurrent polymorphisms in BRCA1gene in Sri Lankan breast cancer patients and at risk individuals

  Familial breast cancer patients
(N = 66)
Sporadic breast cancer patients
(N = 64)
At risk Individuals
(N = 70)
Age (years) at diagnosis (patients)/sample collection (at risk individuals)    
   Mean ± SD 46.97+9.05 47.37+10.06 40.51+12.01
   ≤ 40 18 20 33
   > 40 48 44 37
Number of family members with breast cancer    
   N = 0 0 64 0
   N = 1 44 (1st: 18, 2nd: 26) 0 28
   N = 2 19 (1st: 5, 2nd: 11, 1st & 2nd both: 3) 0 18
   N = 3 03 (1st and 2nd) 0 24
Number of family members with other cancers*    
   N = 1 16 0 17
   N = 2 07 0 24
   N = 3 01 0 01
   N = 4 01 0 0
Ethnicity    
   Muslim 02 03 01
   Sinhalese 62 58 68
   Tamil 02 03 01
  1. * colorectal, lung, oral, ovarian, thyroid, uterine cancers 1st: 1st degree relative, 2nd: 2nd degree relative affected with breast cancer