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Table 1 Selection criteria and clinical characteristics of the families included in this study.

From: Association of common ATMvariants with familial breast cancer in a South American population

Selection Criteria FAMILIES
2 family members with breast cancer 29
2 family members with breast cancer, onset before age 40 in one 18
≥ 2 family members with breast cancer, bilateral in one 15
≥ 3 family members with breast cancer 32
≥ 3 family members with breast cancer, at least one with onset before age 40 26
3 family members with breast cancer, one male cancer 2
≥ 3 family members with a combination of breast and ovarian cancer 3
≥ 2 family members with breast cancer, one with both breast and ovarian cancer 2
Single affected individual with breast cancer < age 31 10
Breast cancer in male only 2
Total 137