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Table 2 Prevalence of CHEK2 1100delC in familial breast cancer according to age at diagnosis compared to controls (Familial Risk Cohort and Population-based cohort, age at diagnosis missing in 16 patients)

From: CHEK2 1100delC is prevalent in Swedish early onset familial breast cancer

Age at diagnosis, years CHEK2 1100delC+/total tested p-value1
<45 5/98 (5.1%) 0.003
46–55 4/148 (2.7%) 0.04
>55 1/188 (0.5%) 1.0
  1. 1P-values were calculated with Fisher's test for association