Start with the exact report—not a family rumor
Obtain the complete laboratory report, including the gene, exact variant, classification, specimen type, test method, report date, and laboratory. Germline testing looks for an inherited change; tumor testing looks for changes in cancer tissue and may uncover a result that needs confirmation in blood or saliva.
When no familial variant is known, a relative who has had a BRCA-associated cancer is often the most informative person to test first. When a pathogenic familial variant is already known, relatives can usually receive targeted testing for that exact variant after counseling.
- Map breast, ovarian, pancreatic, prostate, and relevant other cancers across both sides of the family.
- Record age at diagnosis, bilateral disease, multiple primary cancers, ancestry, and prior testing.
- Ask whether a multigene panel is appropriate and how secondary or uncertain findings will be handled.
Time family testing to a real medical decision
BRCA predictive testing is generally reserved for adults because childhood risk-management interventions are not available. Adult relatives benefit from enough lead time to receive pre-test counseling, consider privacy and insurance questions, and plan screening or prevention without being rushed.
Cascade testing usually starts with parents, siblings, and adult children, then moves through the side of the family where the variant is found. A genetics professional can help distinguish a true negative for a known familial variant from an uninformative negative in a family without a confirmed variant.
Build a family communication packet
A useful packet is factual and limited: a copy of the report, the laboratory's family letter if available, the genetics clinic contact, the reason relatives may wish to seek counseling, and a reminder that each person makes an independent decision. It should not contain another relative's entire medical record.
- What is known: gene, variant, classification, and inheritance possibility.
- What is not known: whether a particular relative carries it or will develop cancer.
- Next action: genetic counseling and testing through an appropriate clinical laboratory.