Cancer risk in BRCA2 carriers–survival analysis
according to RAD51 genotype. RAD51-135C
+-heterozygotes for the 135C polymorphism. RAD51-135wt (wild type)
− homozygous normal (GG) at nucleotide 135. (A)
Fraction of BRCA2 carriers remaining free of both breast
and ovarian cancer. For RAD51-135C
heterozygotes, HR = 4.0 [95% confidence interval (CI) 1.6–9.8,
P = 0.003]. (B) Fraction of
BRCA2 carriers remaining free of breast cancer. For
RAD51-135C heterozygotes, HR = 3.46 (95% CI 1.3–9.2,
P = 0.01). All BRCA2 carriers who
also were RAD51-135C heterozygotes became
affected by age 58, whereas 50.4% of those who were
RAD51-135 normal homozygotes remained
unaffected at the same age. (C) Fraction of
BRCA2 carriers remaining free of ovarian cancer. For
RAD51-135C heterozygotes, HR = 1.23 (NS).