BRCA2 and breast cancer: In the 64 samples with history of familial breast cancer, BRCA2 exon 1 deletions were found in three cases, deletions of exon 11 in one case, deletion of exon 23 in two cases, exon 17 and exon 26 were deleted in one case each, and two samples presented BRCA2 ex22–24 deletions.