BRCA1 hereditary cancer (four-generation) — Pedigree Chart

“A BRCA1 family pedigree: affected deceased grandmother I-2 and unaffected grandfather I-1 have an affected daughter, an unaffected son and a carrier daughter. The affected daughter has an affected proband daughter, an unaffected son and a presymptomatic daughter; the carrier daughter has a carrier daughter and an unaffected son.”