BRCA1 in males: results, risk and follow-up

Sex does not determine whether the gene change is inherited. The relevant questions are whether the finding is truly pathogenic, whether it is inherited rather than confined to a tumour, and how the person's age and family history shape care.

Laboratory reports commonly classify a BRCA1 change as pathogenic, likely pathogenic, uncertain, likely benign, or benign. Only a confirmed harmful inherited finding establishes BRCA1-associated susceptibility; an uncertain variant is not the same result.

BRCA1 normally participates in repairing DNA damage. When one inherited copy carries a harmful change, some cells may later lose the remaining working copy, which can help a cancer develop. This mechanism raises risk without predicting whether or when cancer will occur.

Request genetic counselling with the original report available. If the finding came from tumour profiling, ask whether a separate blood or saliva test is appropriate to determine whether it is inherited.

Review breast awareness and clinical examination with your clinician, and discuss whether prostate assessment or other surveillance is appropriate for your age and family history. Record cancers from maternal and paternal relatives because either branch can carry BRCA1. Testing unaffected relatives is most informative when the known family variant can be targeted.

Book an examination if you notice a firm breast or chest-wall lump, nipple discharge, nipple inversion, skin puckering, or an armpit lump. Male breast cancer can present with these features, but an examination is needed to determine the cause.

Seek timely advice for persistent urinary obstruction, blood in urine, ongoing upper abdominal or back discomfort, yellowing of the skin or eyes, or unexplained weight loss. A genetic result cannot identify the source of a new symptom.

Useful questions include: Is this variant harmful and inherited? Does my family history change the surveillance you recommend? What breast changes should I check for? Should a relative with cancer be tested first? When should the result be re-reviewed if its meaning is uncertain?