Results revealed a significant association between ATM-rs228590 and BC on both genotypic and allelic level when analysed using both the 1000 Genomes Project data (genotype: p = 3.36 × 10–10; allele: p = 8.1 × 10–10) and gnomAD (genotype: p = 1.4 × 10–10; allele: p = 7.3 × 10–8). This evidence concerns the gene ATM and breast cancer.