BRCA1 / 2 testing and TNBC

I have metastatic TNBC (in remission) and am in my late 60s. When I was originally diagnosed in 2022, I asked about the possibility of testing for BRCA1/2 defects, and was told it wasn’t offered to my age group unless there was cancer in the family. I am an only child and neither of my parents had cancer in their lifetime. Today, out of the blue, I got a call from my CNS. She said they had been reviewing their patient list against new guidance for genetic testing, I am eligible, and they want to offer me the chance to have it done. The chances of me being a carrier are not high. Whilst a significant proportion of people with BRCA1//2 defects develop TNBC, it doesn’t follow that just because I have TNBC I am highly likely to have a gene defect.

The one direct benefit of testing is that if I am found to be a carrier, it offers up the possibility of being treated with Olaparib if/when I need another treatment line. If I am a carrier, my adult son and daughter could also be carriers. Both are in their 30s and new parents themselves. I am unsure whether I feel comfortable doing something that could burden them with knowledge they might not currently want.

My options would seem to be (a) get tested anyway and hope I can tell my children I have been tested and am not a carrier, or (b) get tested only if my remission ends, to see if I have olaparib as a treatment option.

I am wondering if anyone else has had this dilemma and if so how they decided what to do. And for anyone who is a carrier, how you went about talking to your family.

Hey there

TNBC here too! I told my family that I was going to have the testing done and asked them if they wanted to know the result. They said they didn’t so I told them that I wouldn’t mention it again, but they could, of course, ask me any time if they decided they did want to know and they were happy with this.

Hope this helps and all the best x

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